jQuery的AJAX请求总是失败

Question

当我这样做AJAX调用

var BASE_URL = "http://127.0.0.1:8000/index.php"; 
$.get(BASE_URL + "?r=category") 
      .done(function (data) { 
       alert('success'); 
      }) 
      .fail(function (error) { 
       alert('error'); 
      }); 

这是服务器响应（使用Fiddler检查）

HTTP/1.1 200 OK 
Date: Tue, 06 Jan 2015 13:46:19 GMT 
Server: Apache/2.4.7 (Win32) PHP/5.5.8 
X-Powered-By: PHP/5.5.8 
X-Pagination-Total-Count: 3 
X-Pagination-Page-Count: 1 
X-Pagination-Current-Page: 1 
X-Pagination-Per-Page: 20 
Link: <http://127.0.0.1:8000/index.php?r=category%2Findex&page=1>; rel=self 
Content-Length: 163 
Keep-Alive: timeout=5, max=100 
Connection: Keep-Alive 
Content-Type: application/json; charset=UTF-8 

[{"CaID":1,"Name":"Brot und Gebäck","ParentCaID":null},{"CaID":2,"Name":"Süßes und Salziges","ParentCaID":null},{"CaID":3,"Name":"Getränke","ParentCaID":null}] 

但它总是会调用失败的函数。

Answer 1

var BASE_URL = "http://127.0.0.1:8000/index.php"; 
$.get(BASE_URL + "?r=category") 
     .done(function (data) { 
      alert('success'); 
     }) 
     .fail(function (error) { 
      console.log(error);//to show what error happended 
      alert('error'); 
     });