Web Service 中的身份验证策略--使用自定义SOAP 标题

 自定义SOAP标题可以限制调用服务的用户范围

 using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Service : System.Web.Services.WebService
{
    public SecurityHeader currentUser;
    public Service()
    {

        //如果使用设计的组件，请取消注释以下行 
        //InitializeComponent(); 
    }
    [WebMethod, SoapHeader("currentUser")]
    public string GetResult(string queryString)
    {
        if(ValidateUser(currentUser.UserName,currentUser.UserPass))
        {
            return "你发送的字符串是:"+queryString;
        }
        else
            return "对不起:" + currentUser.UserName+",您不是合法的用户!";
    }
    //检验SOAP　HEADER 
    private bool ValidateUser(string user, string pass)
    {
        if (user.Equals("user") && pass.Equals("user"))
            return true;
        else
            return false;
    }
}
//自定义Soap Header　Class
public class SecurityHeader : System.Web.Services.Protocols.SoapHeader
{
    public string UserName;
    public string UserPass;
}

下面是客户端的调用

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace SoapHeader
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button_Invoke_Click(object sender, EventArgs e)
        {
            SoapHeader.localhost.SecurityHeader header = new SoapHeader.localhost.SecurityHeader();
            header.UserName = textBox_User.Text;
            header.UserPass = textBox_Pass.Text;
            SoapHeader.localhost.Service service = new SoapHeader.localhost.Service();
            service.SecurityHeaderValue = header;
            this.textBox_Output.Text+=service.GetResult(this.textBox_Input.Text)+Environment.NewLine;
        }
    }
}