智教助手平台：完整初始化

- 前端：Vue3 + TS + Element Plus，24 个页面路由（课件/组题/教案/动画/思维导图/作文批改/命题/课堂/资源/社区等） - 后端：FastAPI + SQLAlchemy + SQLite，17 个路由模块，AI 服务层含降级模板 - AI：glm-5.x 推理模型已禁用思维链，确保输出真实内容 - 修复：ai_service 两处请求体注入 enable_thinking/thinking disabled - 测试账号：13900999999 / test1234
2026-07-29 16:29:10 +08:00
commit 0841b1a103
193 changed files with 44995 additions and 0 deletions
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+import os
+from contextlib import asynccontextmanager
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.requests import Request as StarletteRequest
+from starlette.responses import JSONResponse
+from slowapi import _rate_limit_exceeded_handler
+from slowapi.errors import RateLimitExceeded
+from services.limiter import limiter
+from fastapi.staticfiles import StaticFiles
+from config import get_settings
+from database import engine, Base
+import models  # noqa: F401
+from routers import auth, courseware, animation, exercise, lesson_plan, essay, ai, resource, community, exam, classroom, material, search, admin, mindmap, notification, chat
+
+settings = get_settings()
+
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    Base.metadata.create_all(bind=engine)
+    os.makedirs(settings.UPLOAD_DIR, exist_ok=True)
+    yield
+
+
+app = FastAPI(
+    title=settings.APP_NAME,
+    version=settings.APP_VERSION,
+    lifespan=lifespan,
+)
+
+app.state.limiter = limiter
+app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=settings.CORS_ORIGINS,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+class BodySizeLimitMiddleware(BaseHTTPMiddleware):
+    """Reject request bodies exceeding MAX_REQUEST_BODY_SIZE (default 60MB)."""
+
+    async def dispatch(self, request: StarletteRequest, call_next):
+        max_size = getattr(settings, "MAX_REQUEST_BODY_SIZE", 60 * 1024 * 1024)
+        cl = request.headers.get("content-length")
+        if cl and int(cl) > max_size:
+            return JSONResponse(
+                status_code=413,
+                content={"detail": f"请求体过大，最大允许 {max_size // (1024*1024)}MB"},
+            )
+        return await call_next(request)
+
+
+app.add_middleware(BodySizeLimitMiddleware)
+
+app.include_router(auth.router)
+app.include_router(courseware.router)
+app.include_router(animation.router)
+app.include_router(exercise.router)
+app.include_router(lesson_plan.router)
+app.include_router(essay.router)
+app.include_router(exam.router)
+app.include_router(ai.router)
+app.include_router(resource.router)
+app.include_router(material.router)
+app.include_router(community.router)
+app.include_router(classroom.router)
+app.include_router(search.router)
+app.include_router(admin.router)
+app.include_router(mindmap.router)
+app.include_router(notification.router)
+app.include_router(chat.router)
+
+if os.path.exists(settings.UPLOAD_DIR):
+    app.mount("/uploads", StaticFiles(directory=settings.UPLOAD_DIR), name="uploads")
+
+
+@app.get("/api/health")
+def health_check():
+    return {"status": "ok", "version": settings.APP_VERSION}
+
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=settings.DEBUG)