python data_error ai_generated true

fastapi.exceptions.RequestValidationError: 请求出现 1 个验证错误 query -> page 输入应为有效整数，无法将字符串解析为整数

fastapi.exceptions.RequestValidationError: 1 validation error for Request query -> page Input should be a valid integer, unable to parse string as an integer

ID: python/fastapi-request-validation-query

其他格式: JSON · Markdown 中文 · English
80%修复率
87%置信度
0证据数
2024-07-19首次发现

版本兼容性

版本状态引入弃用备注
0.100+ active — — —

根因分析

声明为 int 的查询参数收到了客户端传来的非数字字符串（通常是空值或 'abc'）。

English

A query parameter declared as int received a non-numeric string (often empty or 'abc') from the client.

generic

解决方案

  1. 95% 成功率 
    from fastapi import Query
@app.get('/items')
async def items(page: int = Query(1, ge=1)): ...
  2. 85% 成功率 
    @app.exception_handler(RequestValidationError)
async def handler(req, exc):
    return JSONResponse(status_code=422, content={'errors': exc.errors()})

无效尝试

常见但无效的做法:

  1. 85% 失败

    Clients keep sending bad data and pagination logic receives None.

  2. 70% 失败

    Moves the failure to an uncaught ValueError deeper in the stack.