支持自定义API接口

backend/app/api/chapters.py

@@ -18,9 +18,10 @@ from app.schemas.chapter import (
     ChapterResponse,
     ChapterListResponse
 )
-from app.services.ai_service import ai_service
+from app.services.ai_service import AIService
 from app.services.prompt_service import prompt_service
 from app.logger import get_logger
+from app.api.settings import get_user_ai_service
 
 router = APIRouter(prefix="/chapters", tags=["章节管理"])
 logger = get_logger(__name__)
@@ -247,7 +248,8 @@ async def check_can_generate(
 @router.post("/{chapter_id}/generate", summary="AI创作章节内容")
 async def generate_chapter_content(
     chapter_id: str,
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     根据大纲、前置章节内容和项目信息AI创作章节完整内容
@@ -372,7 +374,7 @@ async def generate_chapter_content(
         logger.info(f"开始AI创作章节 {chapter_id}")
         
         # 调用AI生成
-        ai_content = await ai_service.generate_text(
+        ai_content = await user_ai_service.generate_text(
             prompt=prompt
         )
         
@@ -410,7 +412,8 @@ async def generate_chapter_content(
 @router.post("/{chapter_id}/generate-stream", summary="AI创作章节内容（流式）")
 async def generate_chapter_content_stream(
     chapter_id: str,
-    request: Request
+    request: Request,
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     根据大纲、前置章节内容和项目信息AI创作章节完整内容（流式返回）
@@ -569,7 +572,7 @@ async def generate_chapter_content_stream(
                 
                 # 流式生成内容
                 full_content = ""
-                async for chunk in ai_service.generate_text_stream(prompt=prompt):
+                async for chunk in user_ai_service.generate_text_stream(prompt=prompt):
                     full_content += chunk
                     yield f"data: {json.dumps({'type': 'content', 'content': chunk}, ensure_ascii=False)}\n\n"
                     await asyncio.sleep(0)  # 让出控制权

backend/app/api/characters.py

@@ -15,9 +15,10 @@ from app.schemas.character import (
     CharacterListResponse,
     CharacterGenerateRequest
 )
-from app.services.ai_service import ai_service
+from app.services.ai_service import AIService
 from app.services.prompt_service import prompt_service
 from app.logger import get_logger
+from app.api.settings import get_user_ai_service
 
 router = APIRouter(prefix="/characters", tags=["角色管理"])
 logger = get_logger(__name__)
@@ -134,7 +135,8 @@ async def delete_character(
 @router.post("/generate", response_model=CharacterResponse, summary="AI生成角色")
 async def generate_character(
     request: CharacterGenerateRequest,
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     使用AI生成角色卡
@@ -216,7 +218,7 @@ async def generate_character(
         logger.info(f"  - Prompt长度：{len(prompt)} 字符")
         
         try:
-            ai_response = await ai_service.generate_text(
+            ai_response = await user_ai_service.generate_text(
                 prompt=prompt,
                 provider=request.provider,
                 model=request.model

backend/app/api/outlines.py

@@ -19,9 +19,10 @@ from app.schemas.outline import (
     OutlineGenerateRequest,
     OutlineReorderRequest
 )
-from app.services.ai_service import ai_service
+from app.services.ai_service import AIService
 from app.services.prompt_service import prompt_service
 from app.logger import get_logger
+from app.api.settings import get_user_ai_service
 
 router = APIRouter(prefix="/outlines", tags=["大纲管理"])
 logger = get_logger(__name__)
@@ -326,7 +327,8 @@ async def reorder_outlines(
 @router.post("/generate", response_model=OutlineListResponse, summary="AI生成/续写大纲")
 async def generate_outline(
     request: OutlineGenerateRequest,
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     使用AI生成或续写小说大纲 - 智能模式
@@ -363,7 +365,7 @@ async def generate_outline(
         # 模式：全新生成
         if actual_mode == "new":
             return await _generate_new_outline(
-                request, project, db
+                request, project, db, user_ai_service
             )
         
         # 模式：续写
@@ -375,7 +377,7 @@ async def generate_outline(
                 )
             
             return await _continue_outline(
-                request, project, existing_outlines, db
+                request, project, existing_outlines, db, user_ai_service
             )
         
         else:
@@ -394,7 +396,8 @@ async def generate_outline(
 async def _generate_new_outline(
     request: OutlineGenerateRequest,
     project: Project,
-    db: AsyncSession
+    db: AsyncSession,
+    user_ai_service: AIService
 ) -> OutlineListResponse:
     """全新生成大纲"""
     logger.info(f"全新生成大纲 - 项目: {project.id}, keep_existing: {request.keep_existing}")
@@ -427,7 +430,7 @@ async def _generate_new_outline(
     )
     
     # 调用AI
-    ai_response = await ai_service.generate_text(
+    ai_response = await user_ai_service.generate_text(
         prompt=prompt,
         provider=request.provider,
         model=request.model
@@ -473,7 +476,8 @@ async def _continue_outline(
     request: OutlineGenerateRequest,
     project: Project,
     existing_outlines: List[Outline],
-    db: AsyncSession
+    db: AsyncSession,
+    user_ai_service: AIService
 ) -> OutlineListResponse:
     """续写大纲"""
     logger.info(f"续写大纲 - 项目: {project.id}, 已有: {len(existing_outlines)} 章")
@@ -536,7 +540,7 @@ async def _continue_outline(
     )
     
     # 调用AI
-    ai_response = await ai_service.generate_text(
+    ai_response = await user_ai_service.generate_text(
         prompt=prompt,
         provider=request.provider,
         model=request.model

backend/app/api/polish.py

@@ -5,9 +5,10 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.database import get_db
 from app.models.generation_history import GenerationHistory
 from app.schemas.polish import PolishRequest, PolishResponse
-from app.services.ai_service import ai_service
+from app.services.ai_service import AIService
 from app.services.prompt_service import prompt_service
 from app.logger import get_logger
+from app.api.settings import get_user_ai_service
 
 router = APIRouter(prefix="/polish", tags=["AI去味"])
 logger = get_logger(__name__)
@@ -16,7 +17,8 @@ logger = get_logger(__name__)
 @router.post("", response_model=PolishResponse, summary="AI去味")
 async def polish_text(
     request: PolishRequest,
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     AI去味 - 将AI生成的文本改写得更像人类作家的手笔
@@ -83,7 +85,8 @@ async def polish_batch(
     project_id: int = None,
     provider: str = None,
     model: str = None,
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     批量处理多个文本的AI去味
@@ -98,7 +101,7 @@ async def polish_batch(
             
             prompt = prompt_service.get_denoising_prompt(original_text=text)
             
-            polished_text = await ai_service.generate_text(
+            polished_text = await user_ai_service.generate_text(
                 prompt=prompt,
                 provider=provider,
                 model=model

backend/app/api/settings.py

@@ -0,0 +1,299 @@
+"""
+设置管理 API
+"""
+from fastapi import APIRouter, HTTPException, Request, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+from typing import Dict, Any, List
+from pathlib import Path
+import httpx
+
+from app.database import get_db
+from app.models.settings import Settings
+from app.schemas.settings import SettingsCreate, SettingsUpdate, SettingsResponse
+from app.user_manager import User
+from app.logger import get_logger
+from app.config import settings as app_settings, PROJECT_ROOT
+from app.services.ai_service import AIService, create_user_ai_service
+
+logger = get_logger(__name__)
+
+router = APIRouter(prefix="/settings", tags=["设置管理"])
+
+
+def read_env_defaults() -> Dict[str, Any]:
+    """从.env文件读取默认配置（仅读取，不修改）"""
+    return {
+        "api_provider": app_settings.default_ai_provider,
+        "api_key": app_settings.openai_api_key or app_settings.anthropic_api_key or "",
+        "api_base_url": app_settings.openai_base_url or app_settings.anthropic_base_url or "",
+        "model_name": app_settings.default_model,
+        "temperature": app_settings.default_temperature,
+        "max_tokens": app_settings.default_max_tokens,
+    }
+
+
+def require_login(request: Request):
+    """依赖：要求用户已登录"""
+    if not hasattr(request.state, "user") or not request.state.user:
+        raise HTTPException(status_code=401, detail="需要登录")
+    return request.state.user
+
+
+async def get_user_ai_service(
+    user: User = Depends(require_login),
+    db: AsyncSession = Depends(get_db)
+) -> AIService:
+    """
+    依赖：获取当前用户的AI服务实例
+    从数据库读取用户设置并创建对应的AI服务
+    """
+    result = await db.execute(
+        select(Settings).where(Settings.user_id == user.user_id)
+    )
+    settings = result.scalar_one_or_none()
+    
+    if not settings:
+        # 如果用户没有设置，从.env读取并保存
+        env_defaults = read_env_defaults()
+        settings = Settings(
+            user_id=user.user_id,
+            **env_defaults
+        )
+        db.add(settings)
+        await db.commit()
+        await db.refresh(settings)
+        logger.info(f"用户 {user.user_id} 首次使用AI服务，已从.env同步设置到数据库")
+    
+    # 使用用户设置创建AI服务实例
+    return create_user_ai_service(
+        api_provider=settings.api_provider,
+        api_key=settings.api_key,
+        api_base_url=settings.api_base_url or "",
+        model_name=settings.model_name,
+        temperature=settings.temperature,
+        max_tokens=settings.max_tokens
+    )
+
+
+@router.get("", response_model=SettingsResponse)
+async def get_settings(
+    user: User = Depends(require_login),
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    获取当前用户的设置
+    如果用户没有保存过设置，自动从.env创建并保存到数据库
+    """
+    result = await db.execute(
+        select(Settings).where(Settings.user_id == user.user_id)
+    )
+    settings = result.scalar_one_or_none()
+    
+    if not settings:
+        # 如果用户没有保存过设置，从.env读取默认配置并保存到数据库
+        env_defaults = read_env_defaults()
+        logger.info(f"用户 {user.user_id} 首次获取设置，自动从.env同步到数据库")
+        
+        # 创建新设置并保存到数据库
+        settings = Settings(
+            user_id=user.user_id,
+            **env_defaults
+        )
+        db.add(settings)
+        await db.commit()
+        await db.refresh(settings)
+        logger.info(f"用户 {user.user_id} 的设置已从.env同步到数据库")
+    
+    logger.info(f"用户 {user.user_id} 获取已保存的设置")
+    return settings
+
+
+@router.post("", response_model=SettingsResponse)
+async def save_settings(
+    data: SettingsCreate,
+    user: User = Depends(require_login),
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    创建或更新当前用户的设置（Upsert）
+    如果设置已存在则更新，否则创建新设置
+    仅保存到数据库
+    """
+    # 查找现有设置
+    result = await db.execute(
+        select(Settings).where(Settings.user_id == user.user_id)
+    )
+    settings = result.scalar_one_or_none()
+    
+    # 准备数据
+    settings_dict = data.model_dump(exclude_unset=True)
+    
+    if settings:
+        # 更新现有设置
+        for key, value in settings_dict.items():
+            setattr(settings, key, value)
+        
+        await db.commit()
+        await db.refresh(settings)
+        logger.info(f"用户 {user.user_id} 更新设置")
+    else:
+        # 创建新设置
+        settings = Settings(
+            user_id=user.user_id,
+            **settings_dict
+        )
+        db.add(settings)
+        await db.commit()
+        await db.refresh(settings)
+        logger.info(f"用户 {user.user_id} 创建设置")
+    
+    return settings
+
+
+@router.put("", response_model=SettingsResponse)
+async def update_settings(
+    data: SettingsUpdate,
+    user: User = Depends(require_login),
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    更新当前用户的设置
+    仅保存到数据库
+    """
+    result = await db.execute(
+        select(Settings).where(Settings.user_id == user.user_id)
+    )
+    settings = result.scalar_one_or_none()
+    
+    if not settings:
+        raise HTTPException(status_code=404, detail="设置不存在，请先创建设置")
+    
+    # 更新设置
+    update_data = data.model_dump(exclude_unset=True)
+    for key, value in update_data.items():
+        setattr(settings, key, value)
+    
+    await db.commit()
+    await db.refresh(settings)
+    logger.info(f"用户 {user.user_id} 更新设置")
+    
+    return settings
+
+
+@router.delete("")
+async def delete_settings(
+    user: User = Depends(require_login),
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    删除当前用户的设置
+    """
+    result = await db.execute(
+        select(Settings).where(Settings.user_id == user.user_id)
+    )
+    settings = result.scalar_one_or_none()
+    
+    if not settings:
+        raise HTTPException(status_code=404, detail="设置不存在")
+    
+    await db.delete(settings)
+    await db.commit()
+    logger.info(f"用户 {user.user_id} 删除设置")
+    
+    return {"message": "设置已删除", "user_id": user.user_id}
+
+
+@router.get("/models")
+async def get_available_models(
+    api_key: str,
+    api_base_url: str,
+    provider: str = "openai"
+):
+    """
+    从配置的 API 获取可用的模型列表
+    
+    Args:
+        api_key: API 密钥
+        api_base_url: API 基础 URL
+        provider: API 提供商 (openai, anthropic, azure, custom)
+    
+    Returns:
+        模型列表
+    """
+    try:
+        async with httpx.AsyncClient(timeout=10.0) as client:
+            if provider == "openai" or provider == "azure" or provider == "custom":
+                # OpenAI 兼容接口获取模型列表
+                url = f"{api_base_url.rstrip('/')}/models"
+                headers = {
+                    "Authorization": f"Bearer {api_key}",
+                    "Content-Type": "application/json"
+                }
+                
+                logger.info(f"正在从 {url} 获取模型列表")
+                response = await client.get(url, headers=headers)
+                response.raise_for_status()
+                
+                data = response.json()
+                models = []
+                
+                if "data" in data and isinstance(data["data"], list):
+                    for model in data["data"]:
+                        model_id = model.get("id", "")
+                        # 过滤出常用的文本生成模型
+                        if any(keyword in model_id.lower() for keyword in [
+                            "gpt", "gemini", "claude", "llama", "mistral", "qwen", "deepseek"
+                        ]):
+                            models.append({
+                                "value": model_id,
+                                "label": model_id,
+                                "description": model.get("description", "") or f"Created: {model.get('created', 'N/A')}"
+                            })
+                
+                if not models:
+                    raise HTTPException(
+                        status_code=404,
+                        detail="未能从 API 获取到可用的模型列表"
+                    )
+                
+                logger.info(f"成功获取 {len(models)} 个模型")
+                return {
+                    "provider": provider,
+                    "models": models,
+                    "count": len(models)
+                }
+                
+            elif provider == "anthropic":
+                # Anthropic 没有公开的模型列表API
+                raise HTTPException(
+                    status_code=400,
+                    detail="Anthropic 不支持自动获取模型列表，请手动输入模型名称"
+                )
+            
+            else:
+                raise HTTPException(
+                    status_code=400,
+                    detail=f"不支持的提供商: {provider}"
+                )
+            
+    except httpx.HTTPStatusError as e:
+        logger.error(f"获取模型列表失败 (HTTP {e.response.status_code}): {e.response.text}")
+        raise HTTPException(
+            status_code=400,
+            detail=f"无法从 API 获取模型列表 (HTTP {e.response.status_code})"
+        )
+    except httpx.RequestError as e:
+        logger.error(f"请求模型列表失败: {str(e)}")
+        raise HTTPException(
+            status_code=400,
+            detail=f"无法连接到 API: {str(e)}"
+        )
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"获取模型列表时发生错误: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"获取模型列表失败: {str(e)}"
+        )

backend/app/api/wizard_stream.py

@@ -4,6 +4,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select
 from typing import Dict, Any, AsyncGenerator
 import json
+import re
 
 from app.database import get_db
 from app.models.project import Project
@@ -11,10 +12,11 @@ from app.models.character import Character
 from app.models.outline import Outline
 from app.models.chapter import Chapter
 from app.models.relationship import CharacterRelationship, Organization, OrganizationMember, RelationshipType
-from app.services.ai_service import ai_service
+from app.services.ai_service import AIService
 from app.services.prompt_service import prompt_service
 from app.logger import get_logger
 from app.utils.sse_response import SSEResponse, create_sse_response
+from app.api.settings import get_user_ai_service
 
 router = APIRouter(prefix="/wizard-stream", tags=["项目创建向导(流式)"])
 logger = get_logger(__name__)
@@ -22,7 +24,8 @@ logger = get_logger(__name__)
 
 async def world_building_generator(
     data: Dict[str, Any],
-    db: AsyncSession
+    db: AsyncSession,
+    user_ai_service: AIService
 ) -> AsyncGenerator[str, None]:
     """世界构建流式生成器"""
     # 标记数据库会话是否已提交
@@ -61,7 +64,7 @@ async def world_building_generator(
         accumulated_text = ""
         chunk_count = 0
         
-        async for chunk in ai_service.generate_text_stream(
+        async for chunk in user_ai_service.generate_text_stream(
             prompt=prompt,
             provider=provider,
             model=model
@@ -87,24 +90,26 @@ async def world_building_generator(
         world_data = {}
         try:
             cleaned_text = accumulated_text.strip()
+            
+            # 移除markdown代码块标记
             if cleaned_text.startswith('```json'):
-                cleaned_text = cleaned_text[7:]
+                cleaned_text = cleaned_text[7:].lstrip('\n\r')
-            if cleaned_text.startswith('```'):
+            elif cleaned_text.startswith('```'):
-                cleaned_text = cleaned_text[3:]
+                cleaned_text = cleaned_text[3:].lstrip('\n\r')
             if cleaned_text.endswith('```'):
-                cleaned_text = cleaned_text[:-3]
+                cleaned_text = cleaned_text[:-3].rstrip('\n\r')
             cleaned_text = cleaned_text.strip()
             
             world_data = json.loads(cleaned_text)
+                    
         except json.JSONDecodeError as e:
-            logger.error(f"AI返回非JSON格式: {e}")
+            logger.error(f"世界构建JSON解析失败: {e}")
             world_data = {
-                "time_period": accumulated_text[:300] if len(accumulated_text) > 300 else accumulated_text,
+                "time_period": "AI返回格式错误，请重试",
                 "location": "AI返回格式错误，请重试",
                 "atmosphere": "AI返回格式错误，请重试",
                 "rules": "AI返回格式错误，请重试"
             }
-        
         # 保存到数据库
         yield await SSEResponse.send_progress("保存到数据库...", 90)
         
@@ -160,18 +165,20 @@ async def world_building_generator(
 @router.post("/world-building", summary="流式生成世界构建")
 async def generate_world_building_stream(
     data: Dict[str, Any],
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     使用SSE流式生成世界构建，避免超时
     前端使用EventSource接收实时进度和结果
     """
-    return create_sse_response(world_building_generator(data, db))
+    return create_sse_response(world_building_generator(data, db, user_ai_service))
 
 
 async def characters_generator(
     data: Dict[str, Any],
-    db: AsyncSession
+    db: AsyncSession,
+    user_ai_service: AIService
 ) -> AsyncGenerator[str, None]:
     """角色批量生成流式生成器 - 优化版:分批+重试"""
     db_committed = False
@@ -270,7 +277,7 @@ async def characters_generator(
                     
                     # 流式生成
                     accumulated_text = ""
-                    async for chunk in ai_service.generate_text_stream(
+                    async for chunk in user_ai_service.generate_text_stream(
                         prompt=prompt,
                         provider=provider,
                         model=model
@@ -280,12 +287,13 @@ async def characters_generator(
                     
                     # 解析批次结果
                     cleaned_text = accumulated_text.strip()
+                    # 移除markdown代码块标记
                     if cleaned_text.startswith('```json'):
-                        cleaned_text = cleaned_text[7:]
+                        cleaned_text = cleaned_text[7:].lstrip('\n\r')
-                    if cleaned_text.startswith('```'):
+                    elif cleaned_text.startswith('```'):
-                        cleaned_text = cleaned_text[3:]
+                        cleaned_text = cleaned_text[3:].lstrip('\n\r')
                     if cleaned_text.endswith('```'):
-                        cleaned_text = cleaned_text[:-3]
+                        cleaned_text = cleaned_text[:-3].rstrip('\n\r')
                     cleaned_text = cleaned_text.strip()
                     
                     characters_data = json.loads(cleaned_text)
@@ -684,17 +692,19 @@ async def characters_generator(
 @router.post("/characters", summary="流式批量生成角色")
 async def generate_characters_stream(
     data: Dict[str, Any],
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     使用SSE流式批量生成角色，避免超时
     """
-    return create_sse_response(characters_generator(data, db))
+    return create_sse_response(characters_generator(data, db, user_ai_service))
 
 
 async def outline_generator(
     data: Dict[str, Any],
-    db: AsyncSession
+    db: AsyncSession,
+    user_ai_service: AIService
 ) -> AsyncGenerator[str, None]:
     """大纲生成流式生成器 - 向导固定生成前8章作为开局"""
     db_committed = False
@@ -778,6 +788,7 @@ async def outline_generator(
                     batch_requirements += "2. 建立主线冲突和故事钩子\n"
                     batch_requirements += "3. 展开初期情节，为后续发展埋下伏笔\n"
                     batch_requirements += "4. 不要试图完结故事，这只是开始部分\n"
+                    batch_requirements += "5. 不要在JSON字符串值中使用中文引号（""''），请使用【】或《》标记\n"
                     
                     batch_prompt = prompt_service.get_complete_outline_prompt(
                         title=project.title,
@@ -796,7 +807,7 @@ async def outline_generator(
                     
                     # 流式生成
                     accumulated_text = ""
-                    async for chunk in ai_service.generate_text_stream(
+                    async for chunk in user_ai_service.generate_text_stream(
                         prompt=batch_prompt,
                         provider=provider,
                         model=model
@@ -806,12 +817,14 @@ async def outline_generator(
                     
                     # 解析结果
                     cleaned_text = accumulated_text.strip()
+                    
+                    # 移除markdown代码块标记
                     if cleaned_text.startswith('```json'):
-                        cleaned_text = cleaned_text[7:]
+                        cleaned_text = cleaned_text[7:].lstrip('\n\r')
-                    if cleaned_text.startswith('```'):
+                    elif cleaned_text.startswith('```'):
-                        cleaned_text = cleaned_text[3:]
+                        cleaned_text = cleaned_text[3:].lstrip('\n\r')
                     if cleaned_text.endswith('```'):
-                        cleaned_text = cleaned_text[:-3]
+                        cleaned_text = cleaned_text[:-3].rstrip('\n\r')
                     cleaned_text = cleaned_text.strip()
                     
                     batch_outline_data = json.loads(cleaned_text)
@@ -839,7 +852,7 @@ async def outline_generator(
                     logger.info(f"批次{batch_idx+1}成功生成{len(batch_outline_data)}章大纲")
                     
                 except json.JSONDecodeError as e:
-                    logger.error(f"批次{batch_idx+1}解析失败(尝试{retry_count+1}/{MAX_RETRIES}): {e}")
+                    logger.error(f"大纲生成批次{batch_idx+1} JSON解析失败(尝试{retry_count+1}/{MAX_RETRIES}): {e}")
                     retry_count += 1
                     if retry_count < MAX_RETRIES:
                         yield await SSEResponse.send_progress(
@@ -945,12 +958,13 @@ async def outline_generator(
 @router.post("/outline", summary="流式生成完整大纲")
 async def generate_outline_stream(
     data: Dict[str, Any],
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     使用SSE流式生成完整大纲，避免超时
     """
-    return create_sse_response(outline_generator(data, db))
+    return create_sse_response(outline_generator(data, db, user_ai_service))
 
 
 async def update_world_building_generator(
@@ -1037,7 +1051,8 @@ async def update_world_building_stream(
 async def regenerate_world_building_generator(
     project_id: str,
     data: Dict[str, Any],
-    db: AsyncSession
+    db: AsyncSession,
+    user_ai_service: AIService
 ) -> AsyncGenerator[str, None]:
     """重新生成世界观流式生成器"""
     db_committed = False
@@ -1070,7 +1085,7 @@ async def regenerate_world_building_generator(
         accumulated_text = ""
         chunk_count = 0
         
-        async for chunk in ai_service.generate_text_stream(
+        async for chunk in user_ai_service.generate_text_stream(
             prompt=prompt,
             provider=provider,
             model=model
@@ -1096,19 +1111,21 @@ async def regenerate_world_building_generator(
         world_data = {}
         try:
             cleaned_text = accumulated_text.strip()
+            # 移除markdown代码块标记
             if cleaned_text.startswith('```json'):
-                cleaned_text = cleaned_text[7:]
+                cleaned_text = cleaned_text[7:].lstrip('\n\r')
-            if cleaned_text.startswith('```'):
+            elif cleaned_text.startswith('```'):
-                cleaned_text = cleaned_text[3:]
+                cleaned_text = cleaned_text[3:].lstrip('\n\r')
             if cleaned_text.endswith('```'):
-                cleaned_text = cleaned_text[:-3]
+                cleaned_text = cleaned_text[:-3].rstrip('\n\r')
             cleaned_text = cleaned_text.strip()
             
             world_data = json.loads(cleaned_text)
         except json.JSONDecodeError as e:
             logger.error(f"AI返回非JSON格式: {e}")
+            logger.info(world_data)
             world_data = {
-                "time_period": accumulated_text[:300] if len(accumulated_text) > 300 else accumulated_text,
+                "time_period": "AI返回格式错误，请重试",
                 "location": "AI返回格式错误，请重试",
                 "atmosphere": "AI返回格式错误，请重试",
                 "rules": "AI返回格式错误，请重试"
@@ -1155,7 +1172,8 @@ async def regenerate_world_building_generator(
 async def regenerate_world_building_stream(
     project_id: str,
     data: Dict[str, Any],
-    db: AsyncSession = Depends(get_db)
+    db: AsyncSession = Depends(get_db),
+    user_ai_service: AIService = Depends(get_user_ai_service)
 ):
     """
     使用SSE流式重新生成项目的世界观
@@ -1165,7 +1183,7 @@ async def regenerate_world_building_stream(
         "model": "模型名称（可选）"
     }
     """
-    return create_sse_response(regenerate_world_building_generator(project_id, data, db))
+    return create_sse_response(regenerate_world_building_generator(project_id, data, db, user_ai_service))
 
 
 async def cleanup_wizard_data_generator(

backend/app/main.py

@@ -114,11 +114,12 @@ async def db_session_stats():
 from app.api import (
     projects, outlines, characters, chapters,
     wizard_stream, relationships, organizations,
-    auth, users
+    auth, users, settings
 )
 
 app.include_router(auth.router, prefix="/api")
 app.include_router(users.router, prefix="/api")
+app.include_router(settings.router, prefix="/api")
 
 app.include_router(projects.router, prefix="/api")
 app.include_router(wizard_stream.router, prefix="/api")

backend/app/models/settings.py

@@ -1,5 +1,5 @@
 """设置数据模型"""
-from sqlalchemy import Column, String, Text, Float, Integer, DateTime
+from sqlalchemy import Column, String, Text, Float, Integer, DateTime, Index
 from sqlalchemy.sql import func
 from app.database import Base
 import uuid
@@ -10,6 +10,7 @@ class Settings(Base):
     __tablename__ = "settings"
     
     id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
+    user_id = Column(String(50), nullable=False, unique=True, index=True, comment="用户ID")
     api_provider = Column(String(50), default="openai", comment="API提供商")
     api_key = Column(String(500), comment="API密钥")
     api_base_url = Column(String(500), comment="自定义API地址")
@@ -20,5 +21,9 @@ class Settings(Base):
     created_at = Column(DateTime, server_default=func.now(), comment="创建时间")
     updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), comment="更新时间")
     
+    __table_args__ = (
+        Index('idx_user_id', 'user_id'),
+    )
+    
     def __repr__(self):
-        return f"<Settings(id={self.id}, api_provider={self.api_provider})>"
+        return f"<Settings(id={self.id}, user_id={self.user_id}, api_provider={self.api_provider})>"

backend/app/schemas/settings.py

@@ -0,0 +1,37 @@
+"""设置相关的Pydantic模型"""
+from pydantic import BaseModel, Field, ConfigDict
+from typing import Optional
+from datetime import datetime
+
+
+class SettingsBase(BaseModel):
+    """设置基础模型"""
+    model_config = ConfigDict(protected_namespaces=())
+    
+    api_provider: Optional[str] = Field(default="openai", description="API提供商")
+    api_key: Optional[str] = Field(default=None, description="API密钥")
+    api_base_url: Optional[str] = Field(default=None, description="自定义API地址")
+    model_name: Optional[str] = Field(default="gpt-4", description="模型名称")
+    temperature: Optional[float] = Field(default=0.7, ge=0.0, le=2.0, description="温度参数")
+    max_tokens: Optional[int] = Field(default=2000, ge=1, le=32000, description="最大token数")
+    preferences: Optional[str] = Field(default=None, description="其他偏好设置(JSON)")
+
+
+class SettingsCreate(SettingsBase):
+    """创建设置请求模型"""
+    pass
+
+
+class SettingsUpdate(SettingsBase):
+    """更新设置请求模型"""
+    pass
+
+
+class SettingsResponse(SettingsBase):
+    """设置响应模型"""
+    model_config = ConfigDict(from_attributes=True, protected_namespaces=())
+    
+    id: str
+    user_id: str
+    created_at: datetime
+    updated_at: datetime

backend/app/services/ai_service.py

@@ -2,7 +2,7 @@
 from typing import Optional, AsyncGenerator, List, Dict, Any
 from openai import AsyncOpenAI
 from anthropic import AsyncAnthropic
-from app.config import settings
+from app.config import settings as app_settings
 from app.logger import get_logger
 import httpx
 
@@ -10,12 +10,37 @@ logger = get_logger(__name__)
 
 
 class AIService:
-    """AI服务统一接口"""
+    """AI服务统一接口 - 支持从用户设置或全局配置初始化"""
+    
+    def __init__(
+        self,
+        api_provider: Optional[str] = None,
+        api_key: Optional[str] = None,
+        api_base_url: Optional[str] = None,
+        default_model: Optional[str] = None,
+        default_temperature: Optional[float] = None,
+        default_max_tokens: Optional[int] = None
+    ):
+        """
+        初始化AI客户端（优化并发性能）
+        
+        Args:
+            api_provider: API提供商 (openai/anthropic)，为None时使用全局配置
+            api_key: API密钥，为None时使用全局配置
+            api_base_url: API基础URL，为None时使用全局配置
+            default_model: 默认模型，为None时使用全局配置
+            default_temperature: 默认温度，为None时使用全局配置
+            default_max_tokens: 默认最大tokens，为None时使用全局配置
+        """
+        # 保存用户设置或使用全局配置
+        self.api_provider = api_provider or app_settings.default_ai_provider
+        self.default_model = default_model or app_settings.default_model
+        self.default_temperature = default_temperature or app_settings.default_temperature
+        self.default_max_tokens = default_max_tokens or app_settings.default_max_tokens
         
-    def __init__(self):
-        """初始化AI客户端（优化并发性能）"""
         # 初始化OpenAI客户端
-        if settings.openai_api_key:
+        openai_key = api_key if api_provider == "openai" else app_settings.openai_api_key
+        if openai_key:
             # 创建自定义的httpx客户端来避免proxies参数问题
             try:
                 # 配置连接池限制，支持高并发
@@ -43,12 +68,14 @@ class AIService:
                 )
                 
                 client_kwargs = {
-                    "api_key": settings.openai_api_key,
+                    "api_key": openai_key,
                     "http_client": http_client
                 }
                 
-                if settings.openai_base_url:
+                # 优先使用用户提供的base_url，否则使用全局配置
-                    client_kwargs["base_url"] = settings.openai_base_url
+                base_url = api_base_url if api_provider == "openai" else app_settings.openai_base_url
+                if base_url:
+                    client_kwargs["base_url"] = base_url
                 
                 self.openai_client = AsyncOpenAI(**client_kwargs)
                 logger.info("✅ OpenAI客户端初始化成功")
@@ -62,7 +89,8 @@ class AIService:
             logger.warning("OpenAI API key未配置")
         
         # 初始化Anthropic客户端
-        if settings.anthropic_api_key:
+        anthropic_key = api_key if api_provider == "anthropic" else app_settings.anthropic_api_key
+        if anthropic_key:
             try:
                 # 为Anthropic设置相同的超时和连接池配置
                 limits = httpx.Limits(
@@ -82,12 +110,14 @@ class AIService:
                 )
                 
                 client_kwargs = {
-                    "api_key": settings.anthropic_api_key,
+                    "api_key": anthropic_key,
                     "http_client": http_client
                 }
                 
-                if settings.anthropic_base_url:
+                # 优先使用用户提供的base_url，否则使用全局配置
-                    client_kwargs["base_url"] = settings.anthropic_base_url
+                base_url = api_base_url if api_provider == "anthropic" else app_settings.anthropic_base_url
+                if base_url:
+                    client_kwargs["base_url"] = base_url
                 
                 self.anthropic_client = AsyncAnthropic(**client_kwargs)
                 logger.info("✅ Anthropic客户端初始化成功")
@@ -123,10 +153,10 @@ class AIService:
         Returns:
             生成的文本
         """
-        provider = provider or settings.default_ai_provider
+        provider = provider or self.api_provider
-        model = model or settings.default_model
+        model = model or self.default_model
-        temperature = temperature or settings.default_temperature
+        temperature = temperature or self.default_temperature
-        max_tokens = max_tokens or settings.default_max_tokens
+        max_tokens = max_tokens or self.default_max_tokens
         
         if provider == "openai":
             return await self._generate_openai(
@@ -162,10 +192,10 @@ class AIService:
         Yields:
             生成的文本片段
         """
-        provider = provider or settings.default_ai_provider
+        provider = provider or self.api_provider
-        model = model or settings.default_model
+        model = model or self.default_model
-        temperature = temperature or settings.default_temperature
+        temperature = temperature or self.default_temperature
-        max_tokens = max_tokens or settings.default_max_tokens
+        max_tokens = max_tokens or self.default_max_tokens
         
         if provider == "openai":
             async for chunk in self._generate_openai_stream(
@@ -359,5 +389,37 @@ class AIService:
             raise
 
 
-# 创建全局AI服务实例
+# 创建全局AI服务实例（使用环境变量配置，用于向后兼容）
 ai_service = AIService()
+
+
+def create_user_ai_service(
+    api_provider: str,
+    api_key: str,
+    api_base_url: str,
+    model_name: str,
+    temperature: float,
+    max_tokens: int
+) -> AIService:
+    """
+    根据用户设置创建AI服务实例
+    
+    Args:
+        api_provider: API提供商
+        api_key: API密钥
+        api_base_url: API基础URL
+        model_name: 模型名称
+        temperature: 温度参数
+        max_tokens: 最大tokens
+        
+    Returns:
+        AIService实例
+    """
+    return AIService(
+        api_provider=api_provider,
+        api_key=api_key,
+        api_base_url=api_base_url,
+        default_model=model_name,
+        default_temperature=temperature,
+        default_max_tokens=max_tokens
+    )

backend/app/services/prompt_service.py

@@ -26,7 +26,14 @@ class PromptService:
 - 为故事发展提供支撑
 - 具有独特性和吸引力
 
-**重要：你必须只返回纯JSON格式，不要包含任何markdown标记、代码块标记或其他说明文字。**
+**重要格式要求：**
+1. 只返回纯JSON格式，不要包含任何markdown标记、代码块标记或其他说明文字
+2. 不要在JSON字符串值中使用中文引号（""''），请使用英文引号或直接省略引号
+3. 专有名词和强调内容可以使用【】或《》标记，不要用引号
+
+**正确示例**：
+- ✅ "距离【大灾变】爆发" 或 "距离大灾变爆发"
+- ❌ "距离"大灾变"爆发" （会导致JSON解析失败）
 
 请严格按照以下JSON格式返回（每个字段为200-300字的文本描述）：
 {{
@@ -36,7 +43,10 @@ class PromptService:
   "rules": "世界规则的详细描述，包括运行法则、特殊设定、社会规则、权力结构"
 }}
 
-再次强调：只返回纯JSON对象，不要有```json```这样的标记，不要有任何额外的文字说明。"""
+再次强调：
+1. 只返回纯JSON对象，不要有```json```这样的标记
+2. 文本中不要使用中文引号（""），使用【】或《》代替
+3. 不要有任何额外的文字说明"""
 
     # 批量角色生成提示词
     CHARACTERS_BATCH_GENERATION = """你是一位专业的角色设定师。请根据以下世界观和要求，生成{count}个立体丰满的角色和组织：
@@ -67,7 +77,10 @@ class PromptService:
 - 组织要有存在的合理性
 - 所有实体要为故事服务
 
-**重要：你必须只返回纯JSON数组格式，不要包含任何markdown标记、代码块标记或其他说明文字。**
+**重要格式要求：**
+1. 只返回纯JSON数组格式，不要包含任何markdown标记、代码块标记或其他说明文字
+2. 不要在JSON字符串值中使用中文引号（""''），请使用英文引号或【】《》标记
+3. 专有名词和强调内容使用【】或《》，不要用引号
 
 请严格按照以下JSON数组格式返回（每个角色为数组中的一个对象）：
 [
@@ -134,7 +147,8 @@ class PromptService:
 再次强调：
 1. 只返回纯JSON数组，不要有```json```这样的标记
 2. 数组中必须精确包含{count}个对象
-3. 不要引用任何本批次中不存在的角色或组织名称"""
+3. 不要引用任何本批次中不存在的角色或组织名称
+4. 文本描述中不要使用中文引号（""），改用【】或《》"""
 
     # 完整大纲生成提示词
     COMPLETE_OUTLINE_GENERATION = """你是一位经验丰富的小说作家和编剧。请根据以下信息生成完整的{chapter_count}章小说大纲：
@@ -166,7 +180,10 @@ class PromptService:
 - 节奏把控：有张有弛
 - 视角统一：采用{narrative_perspective}视角叙事
 
-**重要：你必须只返回纯JSON数组格式，不要包含任何markdown标记、代码块标记或其他说明文字。**
+**重要格式要求：**
+1. 只返回纯JSON数组格式，不要包含任何markdown标记、代码块标记或其他说明文字
+2. 不要在JSON字符串值中使用中文引号（""''），请使用【】或《》标记
+3. 专有名词、书名、事件名使用【】或《》
 
 请严格按照以下JSON数组格式返回（共{chapter_count}个章节对象）：
 [
@@ -192,7 +209,10 @@ class PromptService:
   }}
 ]
 
-再次强调：只返回纯JSON数组，不要有```json```这样的标记，不要有任何额外的文字说明。数组中要包含{chapter_count}个章节对象。"""
+再次强调：
+1. 只返回纯JSON数组，不要有```json```这样的标记
+2. 数组中要包含{chapter_count}个章节对象
+3. 文本中不要使用中文引号（""），改用【】或《》"""
     
     # 大纲续写提示词
     OUTLINE_CONTINUE_GENERATION = """你是一位经验丰富的小说作家和编剧。请基于以下信息续写小说大纲：
@@ -232,7 +252,10 @@ class PromptService:
 - 保持与已有章节相同的风格和详细程度
 - 推进角色成长和情节发展
 
-**重要：你必须只返回纯JSON数组格式，不要包含任何markdown标记、代码块标记或其他说明文字。**
+**重要格式要求：**
+1. 只返回纯JSON数组格式，不要包含任何markdown标记、代码块标记或其他说明文字
+2. 不要在JSON字符串值中使用中文引号（""''），请使用【】或《》
+3. 文本描述中的专有名词使用【】标记
 
 请严格按照以下JSON数组格式返回（共{chapter_count}个章节对象）：
 [
@@ -262,7 +285,8 @@ class PromptService:
 1. 只返回纯JSON数组，不要有```json```这样的标记
 2. 数组中要包含{chapter_count}个章节对象
 3. 每个summary必须是100-200字的详细描述
-4. 确保字段结构与已有章节完全一致"""
+4. 确保字段结构与已有章节完全一致
+5. 文本中不要使用中文引号（""），改用【】或《》"""
     
     # AI去味提示词（核心特色功能）
     AI_DENOISING = """你是一位追求自然写作风格的编辑。你的任务是将AI生成的文本改写得更像人类作家的手笔。
@@ -431,7 +455,10 @@ class PromptService:
 4. 情节的递进和冲突升级
 5. 角色的成长弧线
 
-**重要：你必须只返回纯JSON格式，不要包含任何markdown标记、代码块标记或其他说明文字。**
+**重要格式要求：**
+1. 只返回纯JSON格式，不要包含任何markdown标记、代码块标记或其他说明文字
+2. 不要在JSON字符串值中使用中文引号（""''），改用【】或《》
+3. 专有名词和强调内容使用【】标记
 
 请严格按照以下JSON格式返回：
 {{
@@ -444,7 +471,10 @@ class PromptService:
   ]
 }}
 
-再次强调：只返回纯JSON对象，不要有```json```这样的标记，不要有任何额外的文字说明。"""
+再次强调：
+1. 只返回纯JSON对象，不要有```json```这样的标记
+2. 文本中不要使用中文引号（""），改用【】或《》
+3. 不要有任何额外的文字说明"""
 
     # 单个角色生成提示词
     SINGLE_CHARACTER_GENERATION = """你是一位专业的角色设定师。请根据以下信息创建一个立体饱满的小说角色。
@@ -487,7 +517,10 @@ class PromptService:
    - 特殊技能或知识
    - 符合世界观设定
 
-**你必须只返回纯JSON格式，不要包含任何markdown标记、代码块标记或其他说明文字。**
+**重要格式要求：**
+1. 只返回纯JSON格式，不要包含任何markdown标记、代码块标记或其他说明文字
+2. 不要在JSON字符串值中使用中文引号（""''），改用【】或《》
+3. 文本描述中的专有名词使用【】标记
 
 请严格按照以下JSON格式返回：
 {{
@@ -543,7 +576,10 @@ class PromptService:
 - 配角要有独特性，不能是工具人
 - 所有设定要为故事服务
 
-再次强调：只返回纯JSON对象，不要有```json```这样的标记，不要有任何额外的文字说明。"""
+再次强调：
+1. 只返回纯JSON对象，不要有```json```这样的标记
+2. 文本中不要使用中文引号（""），改用【】或《》
+3. 不要有任何额外的文字说明"""
 
     @staticmethod
     def format_prompt(template: str, **kwargs) -> str:

frontend/src/App.tsx

@@ -10,6 +10,7 @@ import Characters from './pages/Characters';
 import Relationships from './pages/Relationships';
 import Organizations from './pages/Organizations';
 import Chapters from './pages/Chapters';
+import Settings from './pages/Settings';
 // import Polish from './pages/Polish';
 import Login from './pages/Login';
 import AuthCallback from './pages/AuthCallback';
@@ -31,6 +32,7 @@ function App() {
           
           <Route path="/" element={<ProtectedRoute><ProjectList /></ProtectedRoute>} />
           <Route path="/wizard" element={<ProtectedRoute><ProjectWizardNew /></ProtectedRoute>} />
+          <Route path="/settings" element={<ProtectedRoute><Settings /></ProtectedRoute>} />
           <Route path="/project/:projectId" element={<ProtectedRoute><ProjectDetail /></ProtectedRoute>}>
             <Route index element={<Navigate to="world-setting" replace />} />
             <Route path="world-setting" element={<WorldSetting />} />

frontend/src/pages/ProjectList.tsx

@@ -1,7 +1,7 @@
 import { useEffect } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { Card, Button, Empty, Modal, message, Spin, Row, Col, Statistic, Space, Tag, Progress, Typography, Tooltip, Badge } from 'antd';
-import { EditOutlined, DeleteOutlined, BookOutlined, RocketOutlined, CalendarOutlined, FileTextOutlined, TrophyOutlined, FireOutlined } from '@ant-design/icons';
+import { EditOutlined, DeleteOutlined, BookOutlined, RocketOutlined, CalendarOutlined, FileTextOutlined, TrophyOutlined, FireOutlined, SettingOutlined } from '@ant-design/icons';
 import { useStore } from '../store';
 import { useProjectSync } from '../store/hooks';
 import type { ReactNode } from 'react';
@@ -161,11 +161,36 @@ export default function ProjectList() {
                 style={{
                   borderRadius: 8,
                   background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
-                  border: 'none'
+                  border: 'none',
+                  boxShadow: '0 2px 8px rgba(102, 126, 234, 0.4)'
                 }}
               >
                 向导创建
               </Button>
+              <Button
+                type="default"
+                size={window.innerWidth <= 768 ? 'middle' : 'large'}
+                icon={<SettingOutlined />}
+                onClick={() => navigate('/settings')}
+                style={{
+                  borderRadius: 8,
+                  borderColor: '#d9d9d9',
+                  boxShadow: '0 2px 8px rgba(0, 0, 0, 0.08)',
+                  transition: 'all 0.3s ease'
+                }}
+                onMouseEnter={(e) => {
+                  e.currentTarget.style.borderColor = '#667eea';
+                  e.currentTarget.style.color = '#667eea';
+                  e.currentTarget.style.boxShadow = '0 2px 12px rgba(102, 126, 234, 0.3)';
+                }}
+                onMouseLeave={(e) => {
+                  e.currentTarget.style.borderColor = '#d9d9d9';
+                  e.currentTarget.style.color = 'rgba(0, 0, 0, 0.88)';
+                  e.currentTarget.style.boxShadow = '0 2px 8px rgba(0, 0, 0, 0.08)';
+                }}
+              >
+                API设置
+              </Button>
               <UserMenu />
             </Col>
           </Row>

frontend/src/pages/Settings.tsx

@@ -0,0 +1,507 @@
+import { useState, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Card, Form, Input, Button, Select, Slider, InputNumber, message, Space, Typography, Spin, Modal, Tooltip, Alert } from 'antd';
+import { SettingOutlined, SaveOutlined, DeleteOutlined, ReloadOutlined, ArrowLeftOutlined, InfoCircleOutlined} from '@ant-design/icons';
+import { settingsApi } from '../services/api';
+import type { SettingsUpdate } from '../types';
+
+const { Title, Paragraph } = Typography;
+const { Option } = Select;
+
+export default function SettingsPage() {
+  const navigate = useNavigate();
+  const [form] = Form.useForm();
+  const [loading, setLoading] = useState(false);
+  const [initialLoading, setInitialLoading] = useState(true);
+  const [hasSettings, setHasSettings] = useState(false);
+  const [isDefaultSettings, setIsDefaultSettings] = useState(false);
+  const [modelOptions, setModelOptions] = useState<Array<{ value: string; label: string; description: string }>>([]);
+  const [fetchingModels, setFetchingModels] = useState(false);
+  const [modelsFetched, setModelsFetched] = useState(false);
+
+  useEffect(() => {
+    loadSettings();
+  }, []);
+
+  const loadSettings = async () => {
+    setInitialLoading(true);
+    try {
+      const settings = await settingsApi.getSettings();
+      form.setFieldsValue(settings);
+      
+      // 判断是否为默认设置（id='0'表示来自.env的默认配置）
+      if (settings.id === '0' || !settings.id) {
+        setIsDefaultSettings(true);
+        setHasSettings(false);
+      } else {
+        setIsDefaultSettings(false);
+        setHasSettings(true);
+      }
+    } catch (error: any) {
+      // 如果404表示还没有设置，使用默认值
+      if (error?.response?.status === 404) {
+        setHasSettings(false);
+        setIsDefaultSettings(true);
+        form.setFieldsValue({
+          api_provider: 'openai',
+          api_base_url: 'https://api.openai.com/v1',
+          model_name: 'gpt-4',
+          temperature: 0.7,
+          max_tokens: 2000,
+        });
+      } else {
+        message.error('加载设置失败');
+      }
+    } finally {
+      setInitialLoading(false);
+    }
+  };
+
+  const handleSave = async (values: SettingsUpdate) => {
+    setLoading(true);
+    try {
+      await settingsApi.saveSettings(values);
+      message.success('设置已保存');
+      setHasSettings(true);
+      setIsDefaultSettings(false);
+    } catch (error) {
+      message.error('保存设置失败');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleReset = () => {
+    Modal.confirm({
+      title: '重置设置',
+      content: '确定要重置为默认值吗？',
+      okText: '确定',
+      cancelText: '取消',
+      onOk: () => {
+        form.setFieldsValue({
+          api_provider: 'openai',
+          api_key: '',
+          api_base_url: 'https://api.openai.com/v1',
+          model_name: 'gpt-4',
+          temperature: 0.7,
+          max_tokens: 2000,
+        });
+        message.info('已重置为默认值，请点击保存');
+      },
+    });
+  };
+
+  const handleDelete = () => {
+    Modal.confirm({
+      title: '删除设置',
+      content: '确定要删除所有设置吗？此操作不可恢复。',
+      okText: '确定',
+      cancelText: '取消',
+      okType: 'danger',
+      onOk: async () => {
+        setLoading(true);
+        try {
+          await settingsApi.deleteSettings();
+          message.success('设置已删除');
+          setHasSettings(false);
+          form.resetFields();
+        } catch (error) {
+          message.error('删除设置失败');
+        } finally {
+          setLoading(false);
+        }
+      },
+    });
+  };
+
+  const apiProviders = [
+    { value: 'openai', label: 'OpenAI', defaultUrl: 'https://api.openai.com/v1' },
+    { value: 'azure', label: 'Azure OpenAI', defaultUrl: 'https://YOUR-RESOURCE.openai.azure.com' },
+    { value: 'anthropic', label: 'Anthropic', defaultUrl: 'https://api.anthropic.com' },
+    { value: 'custom', label: '自定义', defaultUrl: '' },
+  ];
+
+  const handleProviderChange = (value: string) => {
+    const provider = apiProviders.find(p => p.value === value);
+    if (provider && provider.defaultUrl) {
+      form.setFieldValue('api_base_url', provider.defaultUrl);
+    }
+    // 清空模型列表，需要重新获取
+    setModelOptions([]);
+    setModelsFetched(false);
+  };
+
+  const handleFetchModels = async (silent: boolean = false) => {
+    const apiKey = form.getFieldValue('api_key');
+    const apiBaseUrl = form.getFieldValue('api_base_url');
+    const provider = form.getFieldValue('api_provider');
+
+    if (!apiKey || !apiBaseUrl) {
+      if (!silent) {
+        message.warning('请先填写 API 密钥和 API 地址');
+      }
+      return;
+    }
+
+    setFetchingModels(true);
+    try {
+      const response = await settingsApi.getAvailableModels({
+        api_key: apiKey,
+        api_base_url: apiBaseUrl,
+        provider: provider || 'openai'
+      });
+      
+      setModelOptions(response.models);
+      setModelsFetched(true);
+      if (!silent) {
+        message.success(`成功获取 ${response.count || response.models.length} 个可用模型`);
+      }
+    } catch (error: any) {
+      const errorMsg = error?.response?.data?.detail || '获取模型列表失败';
+      if (!silent) {
+        message.error(errorMsg);
+      }
+      setModelOptions([]);
+      setModelsFetched(true); // 即使失败也标记为已尝试，避免重复请求
+    } finally {
+      setFetchingModels(false);
+    }
+  };
+
+  const handleModelSelectFocus = () => {
+    // 如果还没有获取过模型列表，自动获取
+    if (!modelsFetched && !fetchingModels) {
+      handleFetchModels(true); // silent模式，不显示成功消息
+    }
+  };
+
+  return (
+    <div style={{
+      minHeight: '100vh',
+      background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
+      padding: window.innerWidth <= 768 ? '20px 16px' : '40px 24px'
+    }}>
+      <div style={{ maxWidth: 800, margin: '0 auto' }}>
+        <Card
+          variant="borderless"
+          style={{
+            background: 'rgba(255, 255, 255, 0.95)',
+            borderRadius: window.innerWidth <= 768 ? 12 : 16,
+            boxShadow: '0 8px 32px rgba(0, 0, 0, 0.1)',
+          }}
+        >
+          <Space direction="vertical" size="large" style={{ width: '100%' }}>
+            {/* 标题栏 */}
+            <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
+              <Space>
+                <Button
+                  icon={<ArrowLeftOutlined />}
+                  onClick={() => navigate('/')}
+                  type="text"
+                />
+                <Title level={window.innerWidth <= 768 ? 3 : 2} style={{ margin: 0 }}>
+                  <SettingOutlined style={{ marginRight: 8, color: '#667eea' }} />
+                  AI API 设置
+                </Title>
+              </Space>
+            </div>
+
+            <Paragraph type="secondary" style={{ marginBottom: 0 }}>
+              配置你的AI API接口参数，这些设置将用于小说生成、角色创建等AI功能。
+            </Paragraph>
+
+            {/* 默认配置提示 */}
+            {isDefaultSettings && (
+              <Alert
+                message="使用 .env 文件中的默认配置"
+                description={
+                  <div>
+                    <p style={{ margin: '8px 0' }}>
+                      当前显示的是从服务器 <code>.env</code> 文件读取的默认配置。
+                    </p>
+                    <p style={{ margin: '8px 0 0 0' }}>
+                      点击"保存设置"后，配置将保存到数据库并同步更新到 <code>.env</code> 文件。
+                    </p>
+                  </div>
+                }
+                type="info"
+                showIcon
+                style={{ marginBottom: 16 }}
+              />
+            )}
+
+            {/* 已保存配置提示 */}
+            {hasSettings && !isDefaultSettings && (
+              <Alert
+                message="使用已保存的个人配置"
+                type="success"
+                showIcon
+                style={{ marginBottom: 16 }}
+              />
+            )}
+
+            {/* 表单 */}
+            <Spin spinning={initialLoading}>
+              <Form
+                form={form}
+                layout="vertical"
+                onFinish={handleSave}
+                autoComplete="off"
+              >
+                <Form.Item
+                  label={
+                    <Space>
+                      <span>API 提供商</span>
+                      <Tooltip title="选择你的AI服务提供商">
+                        <InfoCircleOutlined style={{ color: '#8c8c8c' }} />
+                      </Tooltip>
+                    </Space>
+                  }
+                  name="api_provider"
+                  rules={[{ required: true, message: '请选择API提供商' }]}
+                >
+                  <Select size="large" onChange={handleProviderChange}>
+                    {apiProviders.map(provider => (
+                      <Option key={provider.value} value={provider.value}>
+                        {provider.label}
+                      </Option>
+                    ))}
+                  </Select>
+                </Form.Item>
+
+                <Form.Item
+                  label={
+                    <Space>
+                      <span>API 密钥</span>
+                      <Tooltip title="你的API密钥，将加密存储">
+                        <InfoCircleOutlined style={{ color: '#8c8c8c' }} />
+                      </Tooltip>
+                    </Space>
+                  }
+                  name="api_key"
+                  rules={[{ required: true, message: '请输入API密钥' }]}
+                >
+                  <Input.Password
+                    size="large"
+                    placeholder="sk-..."
+                    autoComplete="new-password"
+                  />
+                </Form.Item>
+
+                <Form.Item
+                  label={
+                    <Space>
+                      <span>API 地址</span>
+                      <Tooltip title="API的基础URL地址">
+                        <InfoCircleOutlined style={{ color: '#8c8c8c' }} />
+                      </Tooltip>
+                    </Space>
+                  }
+                  name="api_base_url"
+                  rules={[
+                    { required: true, message: '请输入API地址' },
+                    { type: 'url', message: '请输入有效的URL' }
+                  ]}
+                >
+                  <Input
+                    size="large"
+                    placeholder="https://api.openai.com/v1"
+                  />
+                </Form.Item>
+
+                <Form.Item
+                  label={
+                    <Space>
+                      <span>模型名称</span>
+                      <Tooltip title="AI模型的名称，如 gpt-4, gpt-3.5-turbo">
+                        <InfoCircleOutlined style={{ color: '#8c8c8c' }} />
+                      </Tooltip>
+                    </Space>
+                  }
+                  name="model_name"
+                  rules={[{ required: true, message: '请输入或选择模型名称' }]}
+                >
+                  <Select
+                    size="large"
+                    showSearch
+                    placeholder="输入模型名称或点击获取"
+                    optionFilterProp="label"
+                    loading={fetchingModels}
+                    onFocus={handleModelSelectFocus}
+                    filterOption={(input, option) =>
+                      (option?.label ?? '').toLowerCase().includes(input.toLowerCase()) ||
+                      (option?.description ?? '').toLowerCase().includes(input.toLowerCase())
+                    }
+                    dropdownRender={(menu) => (
+                      <>
+                        {menu}
+                        {fetchingModels && (
+                          <div style={{ padding: '8px 12px', color: '#8c8c8c', textAlign: 'center' }}>
+                            <Spin size="small" /> 正在获取模型列表...
+                          </div>
+                        )}
+                        {!fetchingModels && modelOptions.length === 0 && modelsFetched && (
+                          <div style={{ padding: '8px 12px', color: '#ff4d4f', textAlign: 'center' }}>
+                            未能获取到模型列表，请检查 API 配置
+                          </div>
+                        )}
+                        {!fetchingModels && modelOptions.length === 0 && !modelsFetched && (
+                          <div style={{ padding: '8px 12px', color: '#8c8c8c', textAlign: 'center' }}>
+                            点击输入框自动获取模型列表
+                          </div>
+                        )}
+                      </>
+                    )}
+                    notFoundContent={
+                      fetchingModels ? (
+                        <div style={{ padding: '8px 12px', textAlign: 'center' }}>
+                          <Spin size="small" /> 加载中...
+                        </div>
+                      ) : (
+                        <div style={{ padding: '8px 12px', color: '#8c8c8c', textAlign: 'center' }}>
+                          未找到匹配的模型
+                        </div>
+                      )
+                    }
+                    suffixIcon={
+                      <div
+                        onClick={(e) => {
+                          e.stopPropagation();
+                          if (!fetchingModels) {
+                            setModelsFetched(false);
+                            handleFetchModels(false);
+                          }
+                        }}
+                        style={{
+                          cursor: fetchingModels ? 'not-allowed' : 'pointer',
+                          display: 'flex',
+                          alignItems: 'center',
+                          padding: '0 4px',
+                          height: '100%',
+                          marginRight: -8
+                        }}
+                        title="重新获取模型列表"
+                      >
+                        <Button
+                          type="text"
+                          size="small"
+                          icon={<ReloadOutlined />}
+                          loading={fetchingModels}
+                          style={{ pointerEvents: 'none' }}
+                        >
+                          刷新
+                        </Button>
+                      </div>
+                    }
+                    options={modelOptions.map(model => ({
+                      value: model.value,
+                      label: model.label,
+                      description: model.description
+                    }))}
+                    optionRender={(option) => (
+                      <div>
+                        <div style={{ fontWeight: 500 }}>{option.data.label}</div>
+                        {option.data.description && (
+                          <div style={{ fontSize: '12px', color: '#8c8c8c' }}>
+                            {option.data.description}
+                          </div>
+                        )}
+                      </div>
+                    )}
+                  />
+                </Form.Item>
+
+                <Form.Item
+                  label={
+                    <Space>
+                      <span>温度参数</span>
+                      <Tooltip title="控制输出的随机性，值越高越随机（0.0-2.0）">
+                        <InfoCircleOutlined style={{ color: '#8c8c8c' }} />
+                      </Tooltip>
+                    </Space>
+                  }
+                  name="temperature"
+                >
+                  <Slider
+                    min={0}
+                    max={2}
+                    step={0.1}
+                    marks={{
+                      0: '0.0',
+                      0.7: '0.7',
+                      1: '1.0',
+                      2: '2.0'
+                    }}
+                  />
+                </Form.Item>
+
+                <Form.Item
+                  label={
+                    <Space>
+                      <span>最大 Token 数</span>
+                      <Tooltip title="单次请求的最大token数量">
+                        <InfoCircleOutlined style={{ color: '#8c8c8c' }} />
+                      </Tooltip>
+                    </Space>
+                  }
+                  name="max_tokens"
+                  rules={[
+                    { required: true, message: '请输入最大token数' },
+                    { type: 'number', min: 1, max: 32000, message: '请输入1-32000之间的数字' }
+                  ]}
+                >
+                  <InputNumber
+                    size="large"
+                    style={{ width: '100%' }}
+                    min={1}
+                    max={32000}
+                    placeholder="2000"
+                  />
+                </Form.Item>
+
+                {/* 操作按钮 */}
+                <Form.Item style={{ marginBottom: 0, marginTop: 32 }}>
+                  <Space size="middle" style={{ width: '100%', justifyContent: 'space-between' }}>
+                    <Space>
+                      <Button
+                        type="primary"
+                        size="large"
+                        icon={<SaveOutlined />}
+                        htmlType="submit"
+                        loading={loading}
+                        style={{
+                          background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
+                          border: 'none'
+                        }}
+                      >
+                        保存设置
+                      </Button>
+                      <Button
+                        size="large"
+                        icon={<ReloadOutlined />}
+                        onClick={handleReset}
+                      >
+                        重置
+                      </Button>
+                    </Space>
+                    {hasSettings && (
+                      <Button
+                        danger
+                        size="large"
+                        icon={<DeleteOutlined />}
+                        onClick={handleDelete}
+                        loading={loading}
+                      >
+                        删除设置
+                      </Button>
+                    )}
+                  </Space>
+                </Form.Item>
+              </Form>
+            </Spin>
+          </Space>
+        </Card>
+      </div>
+    </div>
+  );
+}

frontend/src/services/api.ts

@@ -23,6 +23,8 @@ import type {
   PolishTextRequest,
   GenerateCharactersResponse,
   GenerateOutlineResponse,
+  Settings,
+  SettingsUpdate,
 } from '../types';
 
 const api = axios.create({
@@ -124,6 +126,21 @@ export const userApi = {
   getUser: (userId: string) => api.get<unknown, User>(`/users/${userId}`),
 };
 
+export const settingsApi = {
+  getSettings: () => api.get<unknown, Settings>('/settings'),
+  
+  saveSettings: (data: SettingsUpdate) =>
+    api.post<unknown, Settings>('/settings', data),
+  
+  updateSettings: (data: SettingsUpdate) =>
+    api.put<unknown, Settings>('/settings', data),
+  
+  deleteSettings: () => api.delete<unknown, { message: string; user_id: string }>('/settings'),
+  
+  getAvailableModels: (params: { api_key: string; api_base_url: string; provider: string }) =>
+    api.get<unknown, { provider: string; models: Array<{ value: string; label: string; description: string }>; count?: number }>('/settings/models', { params }),
+};
+
 export const projectApi = {
   getProjects: () => api.get<unknown, Project[]>('/projects'),
   

frontend/src/types/index.ts

@@ -11,6 +11,31 @@ export interface User {
   last_login: string;
 }
 
+// 设置类型定义
+export interface Settings {
+  id: string;
+  user_id: string;
+  api_provider: string;
+  api_key: string;
+  api_base_url: string;
+  model_name: string;
+  temperature: number;
+  max_tokens: number;
+  preferences?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface SettingsUpdate {
+  api_provider?: string;
+  api_key?: string;
+  api_base_url?: string;
+  model_name?: string;
+  temperature?: number;
+  max_tokens?: number;
+  preferences?: string;
+}
+
 // LinuxDO 授权 URL 响应
 export interface AuthUrlResponse {
   auth_url: string;