[英]How to return a json response from a flask error handler?
I have a Flask app where I register an error as:我有一个 Flask 应用程序,我在其中注册了一个错误:
app.register_error_handler(401, handle_errors)
and my handle_errors
function looks like this:我的
handle_errors
function 看起来像这样:
def handle_errors(error):
response = make_response()
response.data = str(error.to_dict())
response.content_type = "application/json"
response.status_code = 401
return response, response.status_code
However, when I invoke my API my response looks like this:但是,当我调用 API 时,我的响应如下所示:
< HTTP/1.0 401 UNAUTHORIZED
< Content-Type: text/html; charset=utf-8
...
Why does it return it as text/html
even though I set the content_type
to application/json
?为什么即使我将
content_type
设置为application/json
,它仍将其作为text/html
返回?
import json
from flask import Flask, Response, abort
app = Flask(__name__)
app.config['PROPAGATE_EXCEPTIONS'] = True
#register 500 error handler
@app.errorhandler(Exception)
# handle all other exception
def all_exception_handler(error):
res = {"error": str(error)}
return Response(status=500, mimetype="application/json", response=json.dumps(res))
# handle 401 exception
def error_401_handler(error):
res = {"error": "Unauthorized"}
return Response(status=401, mimetype="application/json", response=json.dumps(res))
# test exception 500 with http get
@app.route("/test500")
def test500():
raise Exception("test exception")
# test exception 401 with http get
@app.route("/test401")
def test401():
abort(401)
# register 401 error handler
app.register_error_handler(401, error_401_handler)
app.run(host="0.0.0.0")
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