Sys.Services.AuthenticationService 类

更新：2007 年 11 月

为身份验证服务提供客户端代理类。

命名空间：Sys.Services

**继承：**无

成员

备注

AuthenticationService 类提供对用户身份验证的脚本访问。该类调用身份验证服务方法所用的基础结构与调用任何其他 Web 服务方法所用的基础结构一样。

说明：
内置身份验证服务位于服务器上的预定义位置。

AuthenticationService 类为单一实例；它只有一个提供全局访问点的实例。它始终对应用程序可用，因此无需将其实例化。

示例

说明

下面的示例演示如何使用 AuthenticationService 类检查用户是否通过身份验证。有关更多信息，请参见将 Forms 身份验证用于 ASP.NET AJAX。

代码

// Define global variables.
var usernameEntry;
var passwordEntry;
var username;
var password;
var textLoggedIn;
var textNotLoggedIn;
var buttonLogin;  
var buttonLogout; 

function pageLoad()
{
    usernameEntry = $get("NameId");
    passwordEntry = $get("PwdId");
    username = $get("username");
    password = $get("password");
    textLoggedIn = $get("loggedin");
    textNotLoggedIn = $get("notloggedin");
    buttonLogin = $get("ButtonLogin");  
    buttonLogout = $get("ButtonLogout"); 
}



// This function sets and gets the default
// login completed callback function.
function SetDefaultLoginCompletedCallBack()
{
    // Set the default callback function.
    Sys.Services.AuthenticationService.set_defaultLoginCompletedCallback(OnLoginCompleted);

    // Get the default callback function.
    var callBack =     
        Sys.Services.AuthenticationService.get_defaultLoginCompletedCallback();
}

// This function sets and gets the default
// logout completed callback function.
function SetDefaultLogoutCompletedCallBack()
{
    // Set the default callback function.
    Sys.Services.AuthenticationService.set_defaultLogoutCompletedCallback(OnLogoutCompleted);

    // Get the default callback function.
    var callBack =     
        Sys.Services.AuthenticationService.get_defaultLogoutCompletedCallback();
}


// This function sets and gets the default
// failed callback function.
function SetDefaultFailedCallBack()
{
    // Set the default callback function.
    Sys.Services.AuthenticationService.set_defaultFailedCallback(OnFailed);

    // Get the default callback function.
    var callBack =     
        Sys.Services.AuthenticationService.get_defaultFailedCallback();  
}


// This function calls the login method of the
// authentication service to verify 
// the credentials entered by the user.
// If the credentials are authenticated, the
// authentication service issues a forms 
// authentication cookie. 
function OnClickLogin() 
{   

    // Set the default callback functions.
    SetDefaultLoginCompletedCallBack();
    SetDefaultLogoutCompletedCallBack();
    SetDefaultFailedCallBack();

    // Call the authetication service to authenticate
    // the credentials entered by the user.
    Sys.Services.AuthenticationService.login(username.value, 
        password.value, false,null,null,null,null,"User Context");
}

// This function calls the logout method of the
// authentication service to clear the forms 
// authentication cookie.
function OnClickLogout() 
{  
   // Clear the forms authentication cookie. 
   Sys.Services.AuthenticationService.logout(null, 
        null, null, null); 
} 



// This is the callback function called 
// if the authentication fails.      
function OnFailed(error, 
    userContext, methodName)
{           
    // Display feedback message.
    DisplayInformation("error:message = " + 
        error.get_message());
    DisplayInformation("error:timedOut = " + 
        error.get_timedOut());
    DisplayInformation("error:statusCode = " + 
        error.get_statusCode());            
}


// The callback function called 
// if the authentication completed successfully.
function OnLoginCompleted(validCredentials, 
    userContext, methodName)
{
    // GetPageElements();
    
    // Clear the user password.
    password.value = "";

    // On success there will be a forms 
    // authentication cookie in the browser.
    if (validCredentials == true) 
    {

        // Clear the user name.
        username.value = "";

        // Hide login fields.
        buttonLogin.style.visibility = "hidden";
        usernameEntry.style.visibility = "hidden";
        passwordEntry.style.visibility = "hidden";
        textNotLoggedIn.style.visibility = "hidden";  

        // Display logout fields.
        buttonLogout.style.visibility = "visible";
        textLoggedIn.style.visibility = "visible";

        // Clear the feedback area.
        DisplayInformation(""); 
    }
    else 
    {
        textLoggedIn.style.visibility = "hidden";
        textNotLoggedIn.style.visibility = "visible";
        DisplayInformation(
            "Login Credentials Invalid. Could not login"); 
    }
    
}

// This is the callback function called 
// if the user logged out successfully.
function OnLogoutCompleted(result) 
{
    // Display login fields.
    usernameEntry.style.visibility = "visible";
    passwordEntry.style.visibility = "visible";
    textNotLoggedIn.style.visibility = "visible";  
    buttonLogin.style.visibility = "visible";

    // Hide logout fields.
    buttonLogout.style.visibility = "hidden";
    textLoggedIn.style.visibility = "hidden";

}            

// This function displays feedback
// information for the user.    
function DisplayInformation(text)
{
    // var feedBack = 
    //    document.getElementById("FeedBackID").innerHTML;

    document.getElementById("FeedBackID").innerHTML = 
        "<br/>" + text;

    // Display authentication service information.

    var userLoggedIn =
        Sys.Services.AuthenticationService.get_isLoggedIn();
    
    var authServiceTimeout =       
        Sys.Services.AuthenticationService.get_timeout();

    var userLoggedInfo = 
        "<br/> User logged in:                 " + userLoggedIn;

    var timeOutInfo = 
        "<br/> Authentication service timeout: " + authServiceTimeout;

    document.getElementById("FeedBackID").innerHTML = 
        userLoggedInfo + timeOutInfo;

}

// Notify ScriptManager that this is the end of the script.
if (typeof(Sys) !== 'undefined') Sys.Application.notifyScriptLoaded();

请参见

概念

Sys.Services.ProfileService 类

Sys.Net.WebServiceProxy 类

将 Forms 身份验证用于 ASP.NET AJAX