Question

我正在使用jQuery对后台代码中的.ascx控件的方法进行AJAX调用，以获取业务对象列表：

C＃代码：

if (Request.Headers["X-OFFICIAL-REQUEST"] == "TRUE") ReturnList(Request.Params[1]);

  protected void ReturnList(string param)
  {
    Response.Write(GetBusinesses(param));
    Response.Flush();
    try {  
         Response.Close(); 
        }
    catch { }
    Response.End();
    return;
  } 

private string GetBusinesses(string classificationName)
{
    System.Web.Script.Serialization.JavaScriptSerializer jSearializer = null;
    if (!string.IsNullOrEmpty(classificationName))
    {
        dSourse = BusinessesDBService.Instance.GetLatestListingsUpdates(classificationName).ToList();
        jSearializer = new System.Web.Script.Serialization.JavaScriptSerializer();
    }
    return jSearializer.Serialize(dSourse);

}

jQuery代码：

window.jQuery.ajax({
    type: "POST",
    async: false,
    url: location.href,
    dataType: "json",
    data: ({ 'FUNCTION': 'ReturnList', 'param0': classificationName.toLowerCase() }),
    success: function (data) {
        data = eval(data);

    },
    error: function (XMLHttpRequest, textStatus, errorThrown) {
    },
    beforeSend: function (xhr) {
        xhr.setRequestHeader("X-OFFICIAL-REQUEST", "TRUE"); //Used to ID as a AJAX Request
    },
    complete: function (XMLHttpRequest, textStatus) {
     //build HTML
        var tablestring = '<table ><tr><td>UsreID" + "</td><td>UserName</td></tr>';

        for (var i = 0, len = data.length; i < len; ++i) {
            tablestring = tablestring + "<tr>";
            tablestring = tablestring + "<td>" +
                data[i].BusinessID + "</td>";
            tablestring = tablestring + "<td>" +
                data[i].BusinessName + "</td>";
            tablestring = tablestring + "</tr>";
        }
        tablestring = tablestring + "</table>";
        var divResult = document.getElementById("divAjax");
        divResult.innerHTML = tablestring;

    }
});

http调用执行正常，集合被序列化并随响应一起返回，但是我在这里遇到了一些问题。主要的一点是HTML没有被创建 - 我无法捕获返回的字符串。调用完成后，下面的字符串显示在Firebug脚本窗口中

[{“BusinessID”：6549，“BusinessName”：“Ivory Store”，“IsMain”：true}，{“BusinessID”：16565，“BusinessName”：“Classic Nails”，“IsMain”}，{“ BusinessID“：5877，”BusinessName“：”Visible Changes Hair“，”IsMain“：true}]

同样在Firebug中我注意到XMLHttpRequest响应对象中的字符串和错误消息是“JSON无效”任何建议？非常感谢你。

Answer 1

无效的JSON

 [{"BusinessID":6549,"BusinessName":"Ivory Store","IsMain":true}, {"BusinessID":16565,"BusinessName":"Classic Nails","IsMain"},{"BusinessID":5877,"BusinessName":"Visible Changes Hair","IsMain":true}]

看到中间缺失的部分“IsMain”可能需要

 [{"BusinessID":6549,"BusinessName":"Ivory Store","IsMain":true}, {"BusinessID":16565,"BusinessName":"Classic Nails","IsMain":true},{"BusinessID":5877,"BusinessName":"Visible Changes Hair","IsMain":true}]

OR

 [{"BusinessID":6549,"BusinessName":"Ivory Store","IsMain":true}, {"BusinessID":16565,"BusinessName":"Classic Nails","IsMain":false},{"BusinessID":5877,"BusinessName":"Visible Changes Hair","IsMain":true}]

请参阅此页面：单击JSLint按钮：http://jsfiddle.net/QmMdC/

Answer 2

由于某种原因，下面的代码隐藏C＃解析器代码没有将“]”附加到字符串的末尾，所以我不得不手动附加它 - 它工作了!!!谢谢。

   public static string Serialize<T>(T obj)
    {
        DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
        MemoryStream ms = new MemoryStream();
        serializer.WriteObject(ms, obj);
        string retVal = Encoding.UTF8.GetString(ms.ToArray());
        return retVal + "]";
    }

用于ASP.NET .ascx控件的jQuery Ajax

2 个答案: