Google App Engine json post request body

Question

I can't read body from POST request on Google app engine application whenever I send string which contains colon ":"

This is my request handler class:

class MessageSync(webapp.RequestHandler):
def post(self):
    print self.request.body

Ad this is my testing script:

import httplib2

json_works = '{"works"}'
json_doesnt_work = '{"sux": "test"}'
h = httplib2.Http()

resp, content = h.request('http://localhost:8080/msg', 
        'POST', 
        json_works ,
        headers={'Content-Type': 'application/json'})

print content

If I use variable json_works request body gets printed, but if I use json_doest_work I won't get any response to console. Except if I print whole request object I get this:

POST /msg
Content-Length: 134
Content-Type: application/json
Host: localhost:8080
User-Agent: Python-httplib2/$Rev$

{"sux": "test"}

Why the hack I can't get just body? Thanks!

Answer 1

In the case of json_doesnt_work, the print function is setting the self.request.body as a Response header because it's in a form of a {key:value} parameter.

{'status': '200', 'content-length': '0',
 'expires': 'Fri, 01 Jan 1990 00:00:00 GMT',
 'server': 'Development/1.0',
 'cache-control': 'no-cache',
 'date': 'Tue, 22 Feb 2011 21:54:15 GMT',
 '{"sux"': '"test"}', <=== HERE!
 'content-type': 'text/html; charset=utf-8'
}

You should modify your handler like this:

class MessageSync(webapp.RequestHandler):
def post(self):
    print ''
    print self.request.body 

or even better

class MessageSync(webapp.RequestHandler):
def post(self):
    self.response.headers['Content-Type'] = "text/plain"
    self.response.out.write(self.request.body)