python模拟ajax请求_python模拟ajax请求，获得ajax请求响应

有些网站的数据需要通过ajax来请求获得，ajax请求在发起请求之前必须设置必要的http头，还需要将请求数据封装为json格式。

如下代码片段：

def request_ajax_data(url,data,referer=None,**headers):

req = urllib2.Request(url)

req.add_header('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8')

req.add_header('X-Requested-With','XMLHttpRequest')

req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116')

if referer:

req.add_header('Referer',referer)

if headers:

for k in headers.keys():

req.add_header(k,headers[k])

params = urllib.urlencode(data)

response = urllib2.urlopen(req, params)

jsonText = response.read()

return json.loads(jsonText)

用法示例：

ajaxRequestBody = {"blogId":blogId,"postId":entryId,"blogApp":blogApp,"blogUserGuid":blogUserId}

ajaxResponse = request_ajax_url('http://outofmemory.cn/fakeAjax',ajaxRequestBody)