JS处理Json数据

首先，建个ajax

  <script src="js/jquery-1.4.2.min.js" type="text/javascript"></script>
    <script type="text/javascript">
        $.ajax({
            type: "get",
            url: "student.ashx",
            dataType: 'text',
            success: function(result) {
                document.write("<strong>原json数据</strong><br/><hr/>");
                document.write(result);
                var dataObj = eval("(" + result + ")"); //转换为json对象
                document.write("<br/><br/><strong>解析后的数据</strong><hr/>");
                for (var i = 0; i < dataObj.length; i++) {
                    document.write("姓名：" + dataObj[i].Name + "，年龄：" + dataObj[i].Age + "，性别：" + dataObj[i].Sex + "<br/><hr/>");
                }
            }
        });
    </script>

再建个一般处理程序

DataContractJsonSerializer所在的 命名空间是这个  System.Runtime.Serialization.Json;

public class student : IHttpHandler
{

    public void ProcessRequest(HttpContext context)
    {
         context.Response.ContentType = "application/json";
        DBHelper manager = new DBHelper();    
        List<Student> students = manager.getAllStudent();
        DataContractJsonSerializer json = new DataContractJsonSerializer(students.GetType());
        json.WriteObject(context.Response.OutputStream, students); 
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}

然后是效果图