Question

documentation表示要使用request.get_json()，但这会导致服务返回错误：

Server returned HTTP response code: 500

但是，

调用request.data或request.json都有效。

堆栈追踪：

Traceback (most recent call last):
  File "/home/blake/ves/p27/lib/python2.7/site-packages/flask/app.py", line 1701, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/blake/ves/p27/lib/python2.7/site-packages/werkzeug/contrib/fixers.py", line 125, in __call__
    return self.app(environ, start_response)
  File "/home/blake/ves/p27/lib/python2.7/site-packages/flask/app.py", line 1689, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/home/blake/ves/p27/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/blake/ves/p27/lib/python2.7/site-packages/flask/app.py", line 1360, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/blake/ves/p27/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/blake/ves/p27/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/blake/workspace/starcycle-flask/starcycleweb.py", line 17, in api
    print request.get_json()
  File "/home/blake/ves/p27/lib/python2.7/site-packages/werkzeug/local.py", line 336, in __getattr__
    return getattr(self._get_current_object(), name)
AttributeError: 'Request' object has no attribute 'get_json'

我认为get_json是获取json数据的首选方式。

Answer 1

在Flask / wrappers.py中，方法get_json()被定义为类Request的方法。

但是，同一文件仍包含旧的，已弃用的方法json()。如果您有旧版本的烧瓶，则a）更新或b）改为使用request.json()。

Answer 2

我对flask Response对象有类似的错误，它最终是一个版本问题，我们使用了flask 0.12.1，而get_json（）在1.0.2上可用

文档：

http://flask.pocoo.org/docs/0.12/api/#response-objects

VS

http://flask.pocoo.org/docs/1.0/api/#response-objects

Flask：request.json有效，但request.get_json（）导致错误代码500

2 个答案: