jquery - 一个简单的 ajax 请求 post 为空

Question

我有一个简单的 ajax post 请求。请求已发送。但是为什么当我在 views.py 中打印 request.POST 时，它说:request.POST: <QueryDict: {}> .

if (start <= end) {
   // fire a request to /tryit
       var args = {
       type: "POST",
       url: "/tryit/",
       data: {'x':x1, 'y': y1},
       error: function() {
          console.log("Error occurs");
       },
       success: function() {
          console.log("save_modification works");
       },
       complete:done
    };
    $.ajax(args);
    alert("ajax request is sent");
} 

在 views.py 中，

def tryit(request):
    print "request: ", request

这是我打印请求信息时的输出。输出如下。

[Wed Nov 14 14:50:44 2012] [error] post request:  <WSGIRequest
[Wed Nov 14 14:50:44 2012] [error] path:/tryit/,
[Wed Nov 14 14:50:44 2012] [error] GET:<QueryDict: {}>,
[Wed Nov 14 14:50:44 2012] [error] POST:<QueryDict: {}>,
[Wed Nov 14 14:50:44 2012] [error] COOKIES:{'sessionid': 'f997a4c4ba0f576fe11141e0c0dcd38
 d'},
[Wed Nov 14 14:50:44 2012] [error] META:{'CONTENT_LENGTH': '128',
[Wed Nov 14 14:50:44 2012] [error]  'CONTENT_TYPE': 'application/x-www-form-urlencoded',
[Wed Nov 14 14:50:44 2012] [error]  'DOCUMENT_ROOT': '/var/www',
[Wed Nov 14 14:50:44 2012] [error]  'GATEWAY_INTERFACE': 'CGI/1.1',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_ACCEPT': '*/*',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_ACCEPT_ENCODING': 'gzip, deflate',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_ACCEPT_LANGUAGE': 'en-ca',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_CONNECTION': 'Keep-Alive',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_COOKIE': 'sessionid=f997a4c4ba0f576fe11141e0c0d
cd38d',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_PRAGMA': 'no-cache',

[Wed Nov 14 14:50:44 2012] [error]  'HTTP_USER_AGENT': 'Mozilla/5.0 (compatible; MSIE 9.0
; Windows NT 6.0; Trident/5.0)',
[Wed Nov 14 14:50:44 2012] [error]  'HTTP_X_REQUESTED_WITH': 'XMLHttpRequest',
[Wed Nov 14 14:50:44 2012] [error]  'PATH_INFO': u'/tryit/',
[Wed Nov 14 14:50:44 2012] [error]  'PATH_TRANSLATED': 'django.wsgi/tryit/',
[Wed Nov 14 14:50:44 2012] [error]  'QUERY_STRING': '',

[Wed Nov 14 14:50:44 2012] [error]  'REQUEST_METHOD': 'POST',
[Wed Nov 14 14:50:44 2012] [error]  'REQUEST_URI': '/tryit/',
[Wed Nov 14 14:50:44 2012] [error]  'SCRIPT_FILENAME': 'django.wsgi',
[Wed Nov 14 14:50:44 2012] [error]  'SCRIPT_NAME': u'',

[Wed Nov 14 14:50:44 2012] [error]  'SERVER_ADMIN': 'webmaster@localhost',

[Wed Nov 14 14:50:44 2012] [error]  'SERVER_PORT': '80',
[Wed Nov 14 14:50:44 2012] [error]  'SERVER_PROTOCOL': 'HTTP/1.1',
[Wed Nov 14 14:50:44 2012] [error]  'SERVER_SIGNATURE': '<address>Apache/2.2.22 (Ubuntu)
[Wed Nov 14 14:50:44 2012] [error]  'SERVER_SOFTWARE': 'Apache/2.2.22 (Ubuntu)',

[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.callable_object': 'application',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.enable_sendfile': '0',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.handler_script': '',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.input_chunked': '0',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.listener_host': '',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.listener_port': '80',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.process_group': '',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.queue_start': '1352926244930263',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.request_handler': 'wsgi-script',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.script_reloading': '1',
[Wed Nov 14 14:50:44 2012] [error]  'mod_wsgi.version': (3, 4),
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.errors': <mod_wsgi.Log object at 0xa8224c78>,
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.file_wrapper': <built-in method file_wrapper of
 mod_wsgi.Adapter object at 0xa8210218>,
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.input': <mod_wsgi.Input object at 0xa8205ef8>,
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.multiprocess': True,
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.multithread': True,
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.run_once': False,
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.url_scheme': 'http',
[Wed Nov 14 14:50:44 2012] [error]  'wsgi.version': (1, 0)}>


But when I use fiddler, I can see the query parameter string. I am stuck here for a day. Please help. Thanks.

新更新: 我使用 chrome，在“网络”选项卡中，它表示存在内部服务器错误，发起者是 jquery.min.js:16。我不理解这些信息。这里面有没有什么信息？

如果我从 POST 更改为 GET，服务器可以接收查询参数。但是如果我用POST，查询参数就不能post了。怎么解释呢？

Answer 1

您需要使用控制台并检查 ajax 调用的内容和 header 。

你在 firebug 中执行此操作(我希望你的 firefox 中安装了 firebug)，或在 Chrome 中右键单击并检查元素。

在打开的窗口中，您应该有 NET 面板(firebug)，或 Chrome 中的网络。

在那里您将看到对服务器进行的每个调用及其响应的详细信息。