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JQuery 调用ashx文件和WebMethod方法总结

2022-11-12    9852次浏览

//.........................................................JQuery调用ashx文件..................................................................

<script type="text/javascript">

         $(function() {
             $("#txtName").blur(function() {
                 JudgeUserName();
             });
         });
        
        function JudgeUserName()
        {
            $.ajax({
            type:"GET",
            url: "Handler.ashx",
            dataType:"html",
            data:{"userName":$("#txtName").val(),"action":"bbb"},
            beforeSend:function(XMLHttpRequest)
                {
                    $("#showResult").html("正在查询");
                 
                },
            success:function(msg)
                {   
                    $("#showResult").html(msg);
                    $("#showResult").css("color","red");
                },
           complete:function(XMLHttpRequest,textStatus)
                {
                    //隐藏正在查询图片
                },
          error:function()
               {
                    //错误处理
               }
            });
        }

     </script>

Handler.ashx文件 

    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        string action = context.Request.QueryString["action"].ToString();
        if (action == "bbb")
        {
            context.Response.Write(Result(context));
        }
        
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

    public string Result(HttpContext context)
    { 
        string userName = context.Request.QueryString["userName"].ToString();
        if (userName == "James Hao")
        {   
 
            return "用户名已经存在！";
        }
        else
        {
           return "您可以使用此用户名！";
        }
    }

 //...................................................................JQuery调用WebMethod方法.........................................................

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!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">
    
     .hover
        {
            cursor: pointer; /*小手*/
            background: #ffc; /*背景*/
        }

    </style>
    <script type="text/javascript" src="js/jquery-1.3.2-vsdoc2.js"></script>
     <script type="text/javascript">


        //无参数调用
        $(document).ready(function() {
            $('#btn1').click(function() {
                $.ajax({
                    type: "POST",   //访问WebService使用Post方式请求
                    contentType: "application/json", //WebService 会返回Json类型
                    url: "Default2.aspx/HelloWorld", //调用WebService的地址和方法名称组合 ---- WsURL/方法名
                    data: "{}",         //这里是要传递的参数，格式为 data: "{paraName:paraValue}",下面将会看到       
                    dataType: 'json',
                    success: function(result) {     //回调函数，result，返回值
                        alert(result.d);
                    }
                });
            });
        });


        //有参数调用
        $(document).ready(function() {
            $("#btn2").click(function() {
                $.ajax({
                    type: "POST",
                    contentType: "application/json",
                    url: "Default2.aspx/GetWish",
                    data: "{value1:'心想事成',value2:'万事如意',value3:'牛牛牛',value4:2009}",
                    dataType: 'json',
                    success: function(result) {
                        alert(result.d);
                    }
                });
            });
        });
        
        
        //返回集合（引用自网络，很说明问题）
        $(document).ready(function() {
            $("#btn3").click(function() {
                $.ajax({
                    type: "POST",
                    contentType: "application/json",
                    url: "Default2.aspx/GetArray",
                    data: "{i:10}",
                    dataType: 'json',
                    success: function(result) {
                        $(result.d).each(function() {
                            alert(this);
                            $('#dictionary').append(this.toString() + " ");
                            //alert(result.d.join(" | "));
                        });
                    }
                });
            });
        });


        //返回复合类型
        $(document).ready(function() {
            $('#btn4').click(function() {
                $.ajax({
                    type: "POST",
                    contentType: "application/json",
                    url: "Default2.aspx/GetClass",
                    data: "{}",
                    dataType: 'json',
                    success: function(result) {
                        $(result.d).each(function() {
                            //alert(this);
                            $('#dictionary').append(this['ID'] + " " + this['Value']);
                            //alert(result.d.join(" | "));
                        });

                    }
                });
            });
        });

        //返回DataSet(XML)
        $(document).ready(function() {
            $('#btn5').click(function() {
                $.ajax({
                    type: "POST",
                    url: "Default2.aspx/GetDataSet",
                    data: "{}",
                    dataType: 'xml', //返回的类型为XML ，和前面的Json，不一样了
                    success: function(result) {
                    alert(result);
                    //演示一下捕获
                        try {   
                            $(result).find("Table1").each(function() {
                                $('#dictionary').append($(this).find("ID").text() + " " + $(this).find("Value").text());
                            });
                        }
                        catch (e) {
                            alert(e);
                            return;
                        }
                    },
                    error: function(result, status) { //如果没有上面的捕获出错会执行这里的回调函数
                        if (status == 'error') {
                            alert(status);
                        }
                    }
                });
            });
        });

        //Ajax 为用户提供反馈，利用ajaxStart和ajaxStop 方法，演示ajax跟踪相关事件的回调，他们两个方法可以添加给jQuery对象在Ajax前后回调
        //但对与Ajax的监控，本身是全局性的
        $(document).ready(function() {
            $('#loading').ajaxStart(function() {
                $(this).show();
            }).ajaxStop(function() {
                $(this).hide();
            });
        });

        // 鼠标移入移出效果，多个元素的时候，可以使用“，”隔开
        $(document).ready(function() {
            $('btn').hover(function() {
                $(this).addClass('hover');
            }, function() {
                $(this).removeClass('hover');
            });
        });
    </script>

</head>
<body>
    <form id="form1" runat="server">
    <div>
    <input type="button" id="btn1" value="HelloWorld"/> 
    <input type="button" id="btn2" value="传入参数"/> 
    <input type="button" id="btn3" value="返回集合"/> 
    <input type="button" id="btn4" value=" 返回复合类型"/> 
    <input type="button" id="btn5" value="返回DataSet(XML)"/> 
    </div>
    <div id="dictionary">dictionary
    </div>
    </form>
</body>
</html>
==================================================================================

using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.Services;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    [WebMethod]
    public static string HelloWorld()
    {
        return "123--->456";
    }
    [WebMethod]
    public static string ABC(string ABC)
    {
        return ABC;
    }
    [WebMethod]
    public static string GetWish(string value1, string value2, string value3, int value4)
    {
        return string.Format("祝您在{3}年里 {0}、{1}、{2}", value1, value2, value3, value4);
    }
    /// <summary>
    /// 返回集合
    /// </summary>
    /// <param name="i"></param>
    /// <returns></returns>
    [WebMethod]
    public static List<int> GetArray(int i)
    {
        List<int> list = new List<int>();

        while (i >= 0)
        {
            list.Add(i--);
        }

        return list;
    }

    /// <summary>
    /// 返回一个复合类型
    /// </summary>
    /// <returns></returns>
    [WebMethod]
    public static Class1 GetClass()
    {
        return new Class1 { ID = "1", Value = "牛年大吉" };
    }


    /// <summary>
    /// 返回XML
    /// </summary>
    /// <returns></returns>
    [WebMethod]
    public static DataSet GetDataSet()
    {
        DataSet ds = new DataSet();
        DataTable dt = new DataTable();
        dt.Columns.Add("ID", Type.GetType("System.String"));
        dt.Columns.Add("Value", Type.GetType("System.String"));
        DataRow dr = dt.NewRow();
        dr["ID"] = "1";
        dr["Value"] = "新年快乐";
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr["ID"] = "2";
        dr["Value"] = "万事如意";
        dt.Rows.Add(dr);
        ds.Tables.Add(dt);
        return ds;
    }
    public class Class1
    {
        public string ID { get; set; }
        public string Value { get; set; }
    }

}
原文地址：https://www.cnblogs.com/Leo_wl/p/2000218.html
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