tornado服务器未返回带有self.write的响应

import json
import suds
from suds.client import Client
import tornado.httpserver
import tornado.ioloop
import tornado.web
class MainHandler(tornado.web.RequestHandler):

    def get(self):
        url = "http://xx.xxx.xx.xxx/Service.asmx?WSDL"
        client = Client(url)
        resultCount = client.service.MyMethod()
        self.write(json.dumps({'result_count':resultCount})) 

application = tornado.web.Application([
    (r"/", MainHandler),
])

if __name__ == "__main__":
    http_server = tornado.httpserver.HTTPServer(application)
    http_server.listen(6969)
    tornado.ioloop.IOLoop.instance().start()

现在,我有一个jquery函数,它像这样调用tornado代码:

 $.get("http://localhost:6969",
            function(data){
                alert(data);
                $('#article-counter').empty().append(data).show();
            });