瓶：request.json工作，但request.get_json（）导致错误代码500

Question

的documentation说，使用request.get_json()，但会导致服务返回一个错误：

Server returned HTTP response code: 500 

调用request.data或request.json都工作，然而。

堆栈跟踪：

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' 

我以为get_json是为获取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，同一个文件仍然包含旧的，不赞成使用的方法json()。如果您有旧版本的烧瓶，那么a）更新或b）改为使用request.json()。