The json data returned by uploading the file will be prompted to download the problem solution

The json data returned by uploading the file will be prompted to download the problem solution_javascript skills

WBOY

Release： 2016-05-16 16:29:28

Original

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In recent projects, the json data returned by uploading files will be prompted to download. This problem only occurs in IE10. The front-end uses the jQuery plug-in ajaxForm to submit the form, and the data format returned by the background is json. The code is as follows:

Backend Python:

Copy code The code is as follows:

def jsonp(func):
"""Wraps JSONified output for JSONP requests."""
@wraps(func)
def decorated_function(*args, **kwargs):
callback = request.args.get('callback', False)
temp_content = func(*args, **kwargs)
           if isinstance(temp_content, dict):
              temp_content.setdefault('success', True)
               temp_content.setdefault('code', 200)
             try:
                 temp_content = json.dumps(temp_content, indent=4)
              except UnicodeDecodeError:
                  try:
                   temp_content = ujson.dumps(temp_content)
                  except StandardError as e:
Logger.exception(e)
                  temp_content = json.dumps({'success': False, 'code': 500, 'info': 'INVALID_CONTENT'})
             temp_content = cgi.escape(temp_content)
              if callback:
                    # Based on http://evilcos.me/?p=425, jsonp adds /**/The head will be safer
content = '/**/' str(callback) '(' temp_content ')'
                mimetype = 'application/javascript'
headers = {'charset':'utf-8'}
                   return current_app.response_class(content, mimetype=mimetype, headers=headers)
             else:
                 mimetype = 'application/json'
headers = {'charset':'utf-8'}
content = temp_content
                   return current_app.response_class(content, mimetype=mimetype, headers=headers)
elif isinstance(temp_content, basestring):
             temp_content = cgi.escape(temp_content)
               return temp_content
        else:
               return temp_content
Return decorated_function
@mod.route('/patch/install.json', methods=['POST'])
@jsonp
def patch_install():
Return {'data': 'data'}

Front-end js code:

Copy code The code is as follows:

$('#form').ajaxSubmit({

URL : '/patch/install.json',

Type : 'post',

DataType: 'json',

iframe : true,

Success: function(res) {

             // code

}

});

Solution:
It is necessary to change the data format returned by the backend to text/html format, as follows:

Copy code The code is as follows:

def plain(func):

"""wrap text/html response"""

@wraps(func)

def _inner(*args, **kwargs):

          resp = func(*args, **kwargs)

          if isinstance(resp, dict):

               resp.setdefault('success', True)

                resp.setdefault('code', 200)

               resp = json.dumps(resp)

               resp = cgi.escape(resp)

                return current_app.response_class(resp, mimetype='text/html', headers={'charset': 'utf-8'})

         elif isinstance(resp, basestring):

               resp = cgi.escape(resp)

                return current_app.response_class(resp, mimetype='text/html', headers={'charset': 'utf-8'})

        else:

              return resp

Return _inner

@mod.route('/patch/install.json', methods=['POST'])

@plain

def patch_install():

Return {'data': 'data'}