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  • jquery ajax json parsererror

    data:"{}", data为空也一定要传"{}";不然返回的是xml格式的。并提示parsererror

     

     

    1、编写4种WebService方法

        [WebService(Namespace = "http://tempuri.org/")]
        [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
        [ScriptService]                             //令WebService成功传入Json参数,并以Json形式返回结果
        [GenerateScriptType(typeof(Person))]        //不是必要,但推荐添加(如果Person里面再嵌套另一个复杂类型,则必要声明)
        [ToolboxItem(false)]
    public class WebService1 : System.Web.Services.WebService
        {
    /// <summary>
    /// 无任何参数
    /// </summary>
    /// <returns></returns>
            [WebMethod]
    public string HelloWorld()
            {
    return "Hello World";
            }
    /// <summary>
    /// 传入参数
    /// </summary>
    /// <param name="name"></param>
    /// <returns></returns>
            [WebMethod]
    public string Hello(string name)
            {
    return string.Format("Hello {0}", name);
            }
    /// <summary>
    /// 返回泛型列表
    /// </summary>
    /// <param name="i"></param>
    /// <returns></returns>
            [WebMethod]
    public List<int> CreateArray(int i)
            {
                List<int> list = new List<int>();
    while (i >= 0)
                {
                    list.Add(i--);
                }
    return list;
            }
    /// <summary>
    /// 返回复杂类型
    /// </summary>
    /// <param name="name"></param>
    /// <param name="age"></param>
    /// <returns></returns>
            [WebMethod]
    public Person GetPerson(string name, int age)
            {
    return new Person()
                {
                    Name = name,
                    Age = age
                };
            }
        }
    /// <summary>
    /// 复杂类型
    /// </summary>
    public class Person
        {
    public string Name { get; set; }
    public int Age { get; set; }
        }

    2、编写js调用以上方法

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <title>无标题页</title>
    <style type="text/css">
        input
    {
            200px;
    }
    </style>
    <script type="text/javascript" src="jquery-1[1].2.6.min.js"></script>
    <script type="text/javascript">
        $(function(){ 
    /*
                1、WebService请求类型都为Post,WebService的Url为“[WebServiceUrl]/[WebMethod]”
                2、contentType声明为Json
                3、data要用Json的字符串格式传入
                4、设置了dataType为json后,result就直接为返回的Json对象。
    */
    //调用无参数方法
            $("#btnHelloWorld").click(function(){
                $.ajax({
                    type: "POST",
                    contentType:"application/json",
                    url:"WebService1.asmx/HelloWorld",
                    data:"{}",
                    dataType:'json',
                    success:function(result){                   
                        alert(result.d);
                    }
                });
            });       
    //传入1个参数
            $("#btnHello").click(function(){
                $.ajax({
                    type: "POST",
                    contentType:"application/json",
                    url:"WebService1.asmx/Hello",
                    data:"{name:'KiMoGiGi'}",
                    dataType:'json',
                    success:function(result){                   
                        alert(result.d);
                    }
                });
            });
    //返回泛型列表
            $("#btnArray").click(function(){
                $.ajax({
                    type: "POST",
                    contentType:"application/json",
                    url:"WebService1.asmx/CreateArray",
                    data:"{i:10}",
                    dataType:'json',
                    success:function(result){                   
                        alert(result.d.join(" | "));
                    }
                });
            });
    //返回复杂类型
            $("#btnPerson").click(function(){
                $.ajax({
                    type: "POST",
                    contentType:"application/json",
                    url:"WebService1.asmx/GetPerson",
                    data:"{name:'KiMoGiGi',age:26}",
                    dataType:'json',
                    success:function(result){
    var person = result.d;
    var showText = [];
    for(var p in person){
                            showText.push(p + ":" + person[p]);
                        }
                        alert(showText.join("\r\n"));
                    }
                });
            });
        });
    </script>
    </head>
    <body>
    <form id="form1" runat="server">
    <p>
    <input type="button" id="btnHelloWorld" value="HelloWorld" />
    </p>
    <p>
    <input type="button" id="btnHello" value="Hello" />
    </p>
    <p>
    <input type="button" id="btnArray" value="CreateArray" />
    </p>
    <p>
    <input type="button" id="btnPerson" value="GetPerson" />
    </p>
    </form>
    </body>
    </html>

    http://kb.cnblogs.com/a/1441898/

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  • 原文地址:https://www.cnblogs.com/y0umer/p/3839185.html
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