使用jquery偶尔的ajax响应错误{readyState = 0,status = 0,statusText ="error"}

Question

我使用jquery(和coldfusion serverside)遇到了AJAX响应的问题.有时它会起作用,有时则不起作用.当我测试直接调用它的服务器端组件时 - 它总是有效,所以我猜问题是ajax响应.我直接从服务器获取serverurl - 因此它不应该是跨域问题.我只是显示和隐藏div-tags所以它不应该是在处理ajax响应之前重新定位url.我在这上面拔了很多头发.

addTask方法的代码:

function addTask(){
var priority = $('#ff-add-task-priority').length > 0? $('#ff-add-task-priority').val() : 0;

$.ajax({
        url: settings.server+'/c/Tasks.cfc?method=addTask',
        data: { userid: settings.userid, 
                taskname: $('#ff-add-task-name').val(),
                tasknote: $('#ff-add-task-note').val(),
                completed: $('#ff-add-task-completed').val(),
                priority: priority,
                },
        type: 'POST',
        dataType: 'json',
        success: function(response) {
            var output = addRow(response, $('#ff-add-task-name').val(), 0,0);
            $('#data-list-tasks').append(output);

            $('#main').children().addClass('hide');
            $('#section-list-tasks').removeClass('hide');
            resetForm($('#add-task-form'));
            //route('#section-list-tasks');
        },
        error: function(ErrorMsg) {
           console.log('Error', ErrorMsg);
        }

    });

}

Firebug输出显示AJAX调用有时有效,有时失败:

POST http://dev.wedoolist.com/c/Tasks.cfc?method=addTask jquery.min.js (linje 2) Error Object { readyState=0, status=0, statusText="error"} #secti...t-tasks (linje 124)
POST http://dev.wedoolist.com/c/Tasks.cfc?method=getTasks 200 OK 152ms jquery.min.js (linje 2)
POST http://dev.wedoolist.com/c/Tasks.cfc?method=addTask 200 OK 146ms jquery.min.js (linje 2)
POST http://dev.wedoolist.com/c/Tasks.cfc?method=addTask 200 OK 133ms jquery.min.js (linje 2)
POST http://dev.wedoolist.com/c/Tasks.cfc?method=addTask 200 OK 133ms jquery.min.js (linje 2)
POST http://dev.wedoolist.com/c/Tasks.cfc?method=addTask 200 OK 131ms jquery.min.js (linje 2)
POST http://dev.wedoolist.com/c/Tasks.cfc?method=addTask jquery.min.js (linje 2) Error Object { readyState=0, status=0, statusText="error"}

更新:

Request-headere
Accept  application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language da,en-us;q=0.7,en;q=0.3
Content-Length  59
Content-Type    application/x-www-form-urlencoded; charset=UTF-8
Cookie  CFID=198de696-2168-4911-8639-79ea944c9975; CFTOKEN=0;  JSESSIONID=B520084E7DDFB504BC87E200449C3DA7
Host    dev.wedoolist.com
Referer http://dev.wedoolist.com/index.cfm?add-task-completed-switch=0&ff-add-task-priority=0
User-Agent  Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0
X-Requested-With    XMLHttpRequest

更新:

使用fiddler我收到此错误:

HTTP Error 411. The request must be chunked or have a content length.

任何帮助深表感谢.

谢谢,

彼得

Answer 1

我认为您需要在数据参数中加上引号，如下所示：

data: { 'userid': settings.userid, 
        'taskname': $('#ff-add-task-name').val(),
        'tasknote': $('#ff-add-task-note').val(),
        'completed': $('#ff-add-task-completed').val(),
        'priority': priority,
      },

看看是否有帮助。