webService访问加密

WebService加密，可以对 WebService设置访问用户名和密码，增强 WebService的安全性 使 WebService只能被授权用户使用。 

具体实现步骤： 

1、 定义一个 soapheader派生类用来实现 WebService访问权限验证

<span style="font-size:10px;">using System;
using System.Data;
using System.Configuration;
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;

/// <summary>
///MySoapHeader 的摘要说明
/// </summary>
public class MySoapHeader:System .Web .Services .Protocols .SoapHeader
{
    private string _uname = string.Empty;//webservice访问用户名

    public string Uname
    {
        get { return _uname; }
        set { _uname = value; }
    }
    private string _password = string.Empty;//webservice访问密码

    public string Password
    {
        get { return _password; }
        set { _password = value; }
    }


    public MySoapHeader()
    {
     //
     //TODO: 在此处添加构造函数逻辑
     //
    }
    public MySoapHeader(string uname, string upass)
    {
        init(uname, upass);
    }
    private void init(string uname, string upass)
    {
        this._password = upass;
        this._uname = uname;
    }
    //验证用户是否有权访问内部接口
    private bool isValid(string uname, string upass, out string msg)
    {
        msg = "";
        if (uname == "admin" && upass =="admin")
        {
            return true;
        }
        else {
            msg = "对不起！您无权调用此WebService！";
            return false;
        }
    }
    //验证用户是否有权访问外部接口
    public bool isValid(out string msg)
    {
        return isValid(_uname, _password,out msg);
    }
}


</span>

2、 定义有需要验证的 WebService。 

<span style="font-size:10px;">using System;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;

/// <summary>
///test 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//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 test : System.Web.Services.WebService {

    public test () {

        //如果使用设计的组件，请取消注释以下行
        //InitializeComponent();
    }
    public MySoapHeader myheader = new MySoapHeader();
    [WebMethod]
    public string HelloWorld() {//普通WebService，无需验证
        return "Hello World";
    }
    [SoapHeader("myheader")]//加入此头部的WebService需要验证，不加则为普通WebService无需验证

    [WebMethod(Description = "根据产品编号查询产品的价格", EnableSession = true)]

    public string GetProductPrice2(string ProductId)
    {

        string msg = "";

        //验证是否有权访问

        if (!myheader.isValid(out  msg))
        {

            return -1;//返回错误信息

        }

        return ProductId;
    }
 }
   </span>

3、 客户端调用方法 

引用 WebService定义 WebService名称为 :Myservice

<span style="font-size:10px;">using System;
using System.Configuration;
using System.Data;
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;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        myservice.test te = new abc.test();
        myservice.MySoapHeader myhead = new MySoapHeader();
        myhead.Uname = "admin";//输入WebService访问用户名
        myhead.Password = "admin";//输入WebService访问密码
        te.MySoapHeaderValue = myhead;//
        string test = te.GetProductPrice2("ok!");
      Response.Write(aa);//用户名、密码输入正确则输出ok 否则输出 错误msg
    }
} </span>