asp.net ajax 调用错误解决

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ajax调用aspx页面出现如下错误

前台源代码：

<!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>
<title></title>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(function () {
$("#save").click(function () {
var user = {};
user.name = $("#name").val();
user.age = $("#age").val();
user.sex = $("#sex").val();
user.email = $("#email").val();
user.phone = $("#phone").val();
alert(user.name);
alert(user.sex);
alert(user.age);
alert(user.email);
alert(user.phone);
alert('{user:' + JSON.stringify(user) + '}');
$.ajax({
type: "POST",
url: "../Index.aspx/adduser", data: '{user:' + JSON.stringify(user) + '}',
dataType: "json",
contentType: "application/json;",
success: function (result) {
alert("User has been added successfully."); //getDetails(); //This method is to bind the added data into my HTML Table through Ajax call instead of page load
// window.location.reload(); we can also use this to load window to show updated data
},
error: function (xhr) { document.write(xhr.responseText) }
// error: function () {
// alert("Error while inserting data");
// alert(Error.toString());
// }
});
return false;
});
}); </script>
</head>
<body><div> <div>
<span>姓名:</span><span><input id="name" name="name" type="text" placeholder="ss" required=""/></span>
</div>
<div>
<span>年龄:</span><span><input id="age" name="age" type="text"/></span>
</div>
<div>
<span>性别:</span><span><select id="sex" name="sex" required=""><option value="" disabled="disabled">--select--</option><option value="man">男</option><option value="women">女</option></select></span>
</div>
<div>
<span>邮件:</span><span><input id="email" name="email" type="text" placeholder="abc@xx.com" required=""/></span>
</div>
<div>
<span>电话:</span><span><input id="phone" name="phone" type="text" placeholder="" required=""/></span>
</div>
<div>
<span><input id="save" value="保存" type="button" /></span><span><input id="cancel" value="取消" type="button"/></span>
</div></div></body>
</html>

后台代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Web.Services;namespace Web
{
public partial class Index : System.Web.UI.Page
{
static string sqlcon = System.Configuration.ConfigurationManager.ConnectionStrings["test1ConnectionString"].ConnectionString.ToString(); protected void Page_Load(object sender, EventArgs e)
{ }
//[WebMethod]
public static void adduser(User user)
{
using (SqlConnection con = new SqlConnection(sqlcon))
{
using (SqlCommand cmd = new SqlCommand("insert into Tb_user(_name,_age,_sex,_email,_phone) values(@name,@age,@sex,@email,@phone)"))
{
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@name", user.name);
cmd.Parameters.AddWithValue("@age", user.age);
cmd.Parameters.AddWithValue("@sex", user.sex);
cmd.Parameters.AddWithValue("@email", user.email);
cmd.Parameters.AddWithValue("@phone", user.phone);
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close(); }
} }
}
}

错误解决办法是：把后台代码的方法名前加一个[WebMethod]即可。

ajax 调用asmx，出现错误提示，提示如下：

前台代码如上

后台代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.Configuration;
using System.Data;namespace Web
{
/// <summary>
/// issue 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
//[System.Web.Script.Services.ScriptService]
public class issue : System.Web.Services.WebService
{
string sqlcon = System.Configuration.ConfigurationManager.ConnectionStrings["test1ConnectionString"].ConnectionString.ToString();
[WebMethod]
public string HelloWorld()
{
return "Hello World";
} [WebMethod]
public void adduser(User user)
{
using (SqlConnection con = new SqlConnection(sqlcon))
{
using (SqlCommand cmd = new SqlCommand("insert into Tb_user(_name,_age,_sex,_email,_phone) values(@name,@age,@sex,@email,@phone)"))
{
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@name", user.name);
cmd.Parameters.AddWithValue("@age", user.age);
cmd.Parameters.AddWithValue("@sex", user.sex);
cmd.Parameters.AddWithValue("@email",user.email);
cmd.Parameters.AddWithValue("@phone",user.phone);
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
} }
}
}