[英]cgi.FieldStorage not reads json data from requests.post
我已經設置了簡單的服務器,如Python Cookbook(第11章)中所述
# server.py
import cgi
def notfound_404(environ, start_response):
start_response('404 Not found', [('Content-type', 'text-plain')])
return [b'Not found']
class PathDispatcher:
def __init__(self):
self.pathmap = {}
def __call__(self, environ, start_response):
path = environ['PATH_INFO']
post_env = environ.copy()
post_env['QUERY_STRING'] = ''
params = cgi.FieldStorage(fp=environ['wsgi.input'], environ=post_env, keep_blank_values=True)
environ['params'] = {key: params.getvalue(key) for key in params}
method = environ['REQUEST_METHOD'].lower()
handler = self.pathmap.get((method, path), notfound_404)
return handler(environ, start_response)
def register(self, method, path, function):
self.pathmap[method.lower(), path] = function
return function
和
# app.py
def send_json(environ, start_response):
start_response('200 OK', [('Content-type', 'text/plain')])
params = environ['params']
result = ""
for key, param in params.iteritems():
result += str(key) + ' :: ' + str(param) + '\n'
yield result.encode('utf-8')
if __name__ == '__main__':
from server import PathDispatcher
from wsgiref.simple_server import make_server
dispatcher = PathDispatcher()
dispatcher.register('POST', '/send-json', send_json)
httpd = make_server('', 8080, dispatcher)
print('Listening on 8080...')
httpd.handle_request()
Simple代理使用python.requests發送一些json數據
# agent.py
import requests
import json
json_data = {'some': 'data', 'moredata':[{1: 'one'}, {2: 'two'}]}
url = "http://localhost:8080/send-json"
headers = {'Content-Type': 'application/json'}
r = requests.post(url=url, data=json.dumps(json_data), headers=headers)
print r.text
不幸的是,它會產生這樣的錯誤
Traceback (most recent call last):
File "/usr/lib/python2.7/wsgiref/handlers.py", line 85, in run
self.result = application(self.environ, self.start_response)
File "/home/phux/PycharmProjects/printoscope_sql_injection/server.py", line 24, in __call__
environ['params'] = {key: params.getvalue(key) for key in params}
File "/usr/lib/python2.7/cgi.py", line 517, in __iter__
return iter(self.keys())
File "/usr/lib/python2.7/cgi.py", line 582, in keys
raise TypeError, "not indexable"
TypeError: not indexable
127.0.0.1 - - [23/Sep/2015 12:25:17] "POST /initial-scan HTTP/1.1" 500 59
應用程序無法迭代接收到的數據,而wsgi.FieldStorage不包含MiniFieldStorage字段只是原始json數據
FieldStorage(None, None, '{"moredata": [{"1": "one"}, {"2": "two"}], "some": "data"}')
如果我嘗試發送這樣的數據
r = requests.post(url=url, data=json_data)
一切正常,FieldStorage看起來很好
FieldStorage(None, None, [MiniFieldStorage('moredata', '1'), MiniFieldStorage('moredata', '2'), MiniFieldStorage('some', 'data')])
但是我需要在最終的應用程序中接收json數據,所以......
提前致謝
Phux
只需在server.py中替換這些行
post_env = environ.copy()
post_env['QUERY_STRING'] = ''
params = cgi.FieldStorage(fp=environ['wsgi.input'], environ=post_env, keep_blank_values=True)
environ['params'] = {key: params.getvalue(key) for key in params}
有了這個
try:
request_body_size = int(environ.get('CONTENT_LENGTH', 0))
except ValueError:
request_body_size = 0
request_body = environ['wsgi.input'].read(request_body_size)
params = json.loads(request_body)
environ['params'] = {key: params[key] for key in params}
cgi.FieldStorage期望表單,我不發送一個......這是問題的根源。 還需要對app.py進行一些細微修改,但情況並非如此,可以輕松調整。
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