modify: 上报接口 422 问题

src/chongming/app/__init__.py

@@ -12,6 +12,7 @@ import asyncio
 from contextlib import asynccontextmanager
 
 from fastapi import FastAPI, Request
+from fastapi.exceptions import RequestValidationError
 from fastapi.responses import JSONResponse
 from fastapi.middleware.cors import CORSMiddleware
 
@@ -156,6 +157,35 @@ async def root():
     }
 
 
+@app.exception_handler(RequestValidationError)
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    """
+    请求验证异常处理器，记录详细的验证错误信息和请求体。
+    帮助快速定位 Pydantic 模型与前端/设备上报数据的不匹配问题。
+    """
+    body = None
+    try:
+        body = await request.body()
+        body_str = body.decode("utf-8")[:2000] if body else "<empty>"
+    except Exception:
+        body_str = "<unable to read body>"
+
+    errors = exc.errors()
+    error_summary = [
+        f"{' -> '.join(str(loc) for loc in e['loc'])}: {e['msg']}"
+        for e in errors
+    ]
+    logger.error(
+        f"请求验证失败 [{request.method} {request.url.path}]:\n"
+        f"  错误: {'; '.join(error_summary)}\n"
+        f"  请求体: {body_str}"
+    )
+    return JSONResponse(
+        status_code=422,
+        content={"detail": errors},
+    )
+
+
 @app.exception_handler(Exception)
 async def global_exception_handler(_: Request, exc: Exception):
     """