python捕获全局异常统一管理_python – 任何异常的全局错误处理程序

你可以使用@ app.errorhandler(Exception)：

Demo(HTTPException检查确保状态代码被保留)：

from flask import Flask, abort, jsonify

from werkzeug.exceptions import HTTPException

app = Flask('test')

@app.errorhandler(Exception)

def handle_error(e):

code = 500

if isinstance(e, HTTPException):

code = e.code

return jsonify(error=str(e)), code

@app.route('/')

def index():

abort(409)

app.run(port=1234)

输出：

$http get http://127.0.0.1:1234/

HTTP/1.0 409 CONFLICT

Content-Length: 31

Content-Type: application/json

Date: Sun, 29 Mar 2015 17:06:54 GMT

Server: Werkzeug/0.10.1 Python/3.4.3

{

"error": "409: Conflict"

}

$http get http://127.0.0.1:1234/notfound

HTTP/1.0 404 NOT FOUND

Content-Length: 32

Content-Type: application/json

Date: Sun, 29 Mar 2015 17:06:58 GMT

Server: Werkzeug/0.10.1 Python/3.4.3

{

"error": "404: Not Found"

}

对于较旧的Flask版本(<= 0.10.1,即当前的任何非git / master版本),请将以下代码添加到应用程序中以显式注册HTTP错误：

from werkzeug import HTTP_STATUS_CODES

for code in HTTP_STATUS_CODES:

app.register_error_handler(code, handle_error)