api-library/app/main.py

from fastapi import Depends, FastAPI, Request, status
from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import RequestValidationError
from fastapi.staticfiles import StaticFiles
from fastapi.responses import HTMLResponse
from fastapi.templating import Jinja2Templates
from fastapi.responses import JSONResponse

from .case import case01, case02, case03

app = FastAPI(
    debug=False,
    title="API Library",
    description="",
    version="1.0.0",
)

# 设置静态资源目录
app.mount("/static", StaticFiles(directory="static"), name="static")

# 设置页面模板目录
templates = Jinja2Templates(directory="templates")


# 定义接管RequestValidationError的方法，捕捉422报错并进行自定义处理
@app.exception_handler(RequestValidationError)
async def request_validation_exception_handler(request: Request, exc: RequestValidationError) -> JSONResponse:
    return JSONResponse(
        status_code=status.HTTP_200_OK,
        content={
            "code": 1,
            "message": "Parameter error",
            "data": jsonable_encoder(exc.errors())
        },
    )


# 案例API
app.include_router(
    case01.router, 
    prefix="/api/case/01",
    tags=["案例01（小小图书）"],
)
app.include_router(
    case02.router, 
    prefix="/api/case/02",
    tags=["案例02（网盘助手）"],
)
app.include_router(
    case03.router, 
    prefix="/api/case/03",
    tags=["案例03（小小图书2）"],
)

# 其他API ...


@app.get("/", response_class=HTMLResponse, include_in_schema=False)
async def root(request: Request):
    attr_text = "API Library"
    return templates.TemplateResponse("index.html", {"request": request, "attr_text": attr_text})