jQuery AJAX无法使用IE

时间:2013-03-27 16:11:27

标签: jquery ajax json internet-explorer

我已经看到很多其他人在SO和其他地方都遇到过这个问题,但是没有一个给定的解决方案似乎适合我。

我对ASH​​X处理程序进行了jQuery AJAX调用。该代码适用于Firefox和Chrome,但不适用于IE(版本8,9或10)。

看起来像这样(简化):

var val = $(this).val();

$.ajax({
    url: '/Source/Handlers/Search.ashx?q=' + val,
    type: "GET",
    cache: false,
    dataType: 'json',
    error: function(w,t,f) {
         alert(w + "\n" + t + "\n" + f);
    },
    success: function (data) {
         ...
    }
 });

当我在IE中运行代码时,错误处理程序启动并说

[object Object]
error
error

有用吗?

ASHX处理程序是这样的(再次简化):

public class Search : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        context.Response.ContentType = "application/json";
        context.Response.Buffer = false;

        JavaScriptSerializer serializer = new JavaScriptSerializer();
        List<Suggestions> jsonResponse = new List<Suggestions>();

        // do some stuff

        context.Response.Write(serializer.Serialize(jsonResponse));
    }
}

我尝试将“GET”交换为“POST”,我尝试启用并禁用“缓存”属性,我尝试了不同的dataType设置,例如“json”,“xml”和“text”。

使用HTTP Fiddler我可以看到json响应确实回来了,但IE似乎无法处理它。

有什么想法吗?

修改

以下是来自HTTP Fiddler的TextView中的JSON响应:

543
[{"title":"GAMES","results":[{"title":"abcdefg™","link":"http://www.abcdefg.com/en_gb/abcdefg/","image":"/uploadedImages/abcdefg/games/1-Game_Folder_Master(1)/Config/abcdefg(1).jpg","total":""},{"title":"abcdefg","link":"http://www.abcdefg.com/en_gb/abcdefg","image":"/uploadedImages/abcdefg/games/1-Game_Folder_Master(1)/Config/abcdefg.jpg","total":""},{"title":"abcdefgg","link":"/Retailers/?game=1432&amp;platform=0","image":"/uploadedImages/abcdefg/games/1-Game_Folder_Master(1)/Config/abcdefg.jpg?n=9736","total":""},{"title":"abcdefg","link":"http://www.abcdefg.com","image":"/uploadedImages/abcdefg/games/1-Game_Folder_Master(1)/Config/abcdefg.jpg","total":""},{"title":"abcdefg","link":"/Retailers/?game=1763&amp;platform=0","image":"/uploadedImages/abcdefg/games/1-Game_Folder_Master(1)/Config/abcdefg_promo.jpg","total":""}],"total":"24","link":"/Search/?q=total"},{"title":"MEDIA","results":[{"title":"Videos","link":"/Search/?q=total","image":"","total":"1"},{"title":"Screenshots","link":"/Search/?q=total","image":"","total":"35"}],"total":null,"link":null}]
0

编辑2

嗯,我更新了$ .ajax调用以警告w.status并返回“404”。困惑 - 当Fiddler将响应显示为200时,如何在状态中返回404?

4 个答案:

答案 0 :(得分:1)

我依旧记得这样的问题。 你能尝试添加

吗?
contentType: "application/json; charset=utf-8"

到ajax请求属性。我认为这解决了当时的问题。

答案 1 :(得分:0)

尝试添加data : {q : val},看看是否能解决问题:

 var val = $(this).val();

 $.ajax({
    url: '/Source/Handlers/Search.ashx',
    type: "GET",
    data : {q : val},  //<--------send it this way
    cache: false,
    dataType: 'json',
    error: function(w,t,f) {
       alert(w + "\n" + t + "\n" + f);
    },
    success: function (data) {
       ...
    }
 });

答案 2 :(得分:0)

经过大量的反复试验后,我发现了问题。使用IE时,我需要在从ASHX处理程序返回的数据对象上调用JSON.parse(data)。为此,请使用非jQuery方法调用Ajax。这意味着我有两个不同的Javascript块 - 一个用于IE,另一个用于其他浏览器。

if ($.browser.msie) {
    var xhReq = new XMLHttpRequest();
    xhReq.open("GET", "/Source/Handlers/Search.ashx?q=" + val + "&d=" + dateObj.getTime(), false);
    xhReq.send(null);
    AjaxSuccess(xhReq.responseText);
} else {
    $.ajax({
        url: '/Source/Handlers/Search.ashx',
        type: "GET",
        cache: false,
        dataType: 'json',
        data: { q: val },
        contentType: "application/json;",
        error: function (xhr, ajaxOptions, thrownError) {
            alert(xhr.responseText);
        },
        success: function (data) {
            ...
        }
    });
 }

 function AjaxSuccess(data) {
     data = JSON.parse(data);
     ...
 }

奇怪的是,JSON.parse()方法在Firebug中引发了“意外字符”错误。

答案 3 :(得分:0)

也许编码有问题。试试这个

$.ajax({
        type: 'GET',
        url: encodeURI(url ),
        dataType: 'text',
        success: function (data) {
                            result = JSON.parse(JSON.parse(data))
                                                }
       });