调用WebService时加入身份验证，以拒绝未授权的访问

众所周知，WebService是为企业需求提供的在线应用服务,其他公司或应用软件能够通过Internet来访问并使用这项在线服务。但在有些时候的某些应用服务不希望被未授权访问，那么此时我们可以一下几种方法来实现身份验证。

方法一：在WebService中引入SoapHeader

#region 配置登录标头 /// <summary> /// Code CreateBy BanLao /// </summary> public class MySoapHeader : SoapHeader { private string strUserName = string.Empty; private string strPassWord = string.Empty; public MySoapHeader() { } public MySoapHeader(string username, string password) { this.strUserName = username; this.strPassWord = password; } #region 构造 用户名|密码 /// <summary> /// 用户名 /// </summary> public string UserName { get { return strUserName; } set { strUserName = value; } } /// <summary> /// 密码 /// </summary> public string PassWord { get { return strPassWord; } set { strPassWord = value; } } #endregion #region 检测是否正确登录 /// <summary> /// 检测是否正确登录 /// </summary> /// <returns></returns> public bool CheckLogin() { if (strUserName == "合法登录名" && strPassWord == "合法登录密码") { return true; } else { return false; } } #endregion } #endregion

加入一个服务用于测试：

#region 测试连接 [System.Web.Services.Protocols.SoapHeader("myHeader")] [WebMethod(Description = "判断用户是否开通", EnableSession = true)] public string _GetValue(string strInputValue) { if (myHeader.CheckLogin()) { string strReturnValue = strInputValue + "@CopyRight By BanLao 2010"; return strReturnValue; } else { return "无效的身份验证，请重试！"; } } #endregion

至此我们想要的需要通过身份验证的服务配置好了，下面让我们进行一些测试，新建一个webForm在Page_Load中：

WebLogon.MySoapHeader myHeader = new WebLogon.MySoapHeader(); myHeader.UserName = "约定的合法用户"; myHeader.PassWord = "约定的合法密码"; WebLogon.Service This_Service = new WebLogon.Service(); This_Service.MySoapHeaderValue = myHeader; Response.Write(This_Service._GetValue("This is BanLao's Test Application For SoapHeader. "));

当运行这个WebForm时，如果用户名和密码是正确的我们将看到:

This is BanLao's Test Application For SoapHeader. @CopyRight By BanLao 2010

否则

无效的身份验证，请重试！

方法二：Web Service以Session方式验证

[WebMethod(Description = "检测是否正确登录", EnableSession = true)] public bool CheckLogin(string strUserName, string strPassword) { if (strUserName.Equals("admin") && strPassword.Equals("123456")) { Session["LoginState"] = true; } else { Session["LoginState"] = false; } return (bool)Session["LoginState"]; } #region 测试连接 [WebMethod(Description = "测试连接", EnableSession = true)] public string _GetValue(string strInputValue) { if (Session["LoginState"] == null || Session["LoginState"].Equals(false)) { return "无效的身份验证，请重试！"; } else { string strReturnValue = strInputValue + "@CopyRight By BanLao 2010"; return strReturnValue; } } #endregion

调用该服务，

WebLogon.Service This_Service = new WebLogon.Service(); This_Service.CookieContainer = new System.Net.CookieContainer(); if (This_Service.CheckLogin("admin", "123456")) { Response.Write(This_Service._GetValue("This is BanLao's Test Application For Session. ")); }

当运行这个WebForm时，如果用户名和密码是正确的我们将看到:

This is BanLao's Test Application For Session. @CopyRight By BanLao 2010

否则

无效的身份验证，请重试！

注：如果需要多个合法用户，可以在WebService中声明判断即可~