Javascript 自定义google登录按钮并使用服务器数据库进行身份验证

Javascript 自定义google登录按钮并使用服务器数据库进行身份验证,javascript,jquery,jsp,redirect,google-login,Javascript,Jquery,Jsp,Redirect,Google Login,我跟着 及 但一旦登录,它就会自动登录。 单击按钮后,我希望按钮在javascript函数中获取Gmail信息==>从javascript函数重定向到另一个db_验证页面,以便在用户存在时使用数据库进行验证==>如果成功,请转到欢迎页面或返回主登录页面 请帮助我,我找不到合适的资源。 我正在使用JSP、Javascript 函数onSuccess(谷歌用户){ var profileinfo=googleUser.getBasicProfile(); console.log('------

我跟着 及

但一旦登录,它就会自动登录。 单击按钮后,我希望按钮在javascript函数中获取Gmail信息==>从javascript函数重定向到另一个db_验证页面,以便在用户存在时使用数据库进行验证==>如果成功,请转到欢迎页面或返回主登录页面

请帮助我,我找不到合适的资源。 我正在使用JSP、Javascript


函数onSuccess(谷歌用户){
var profileinfo=googleUser.getBasicProfile();
console.log('---------------------------------------');
console.log('ID:'+profileinfo.getId());
log('Name:'+profileinfo.getName());
log('Image URL:'+profileinfo.getImageUrl());
console.log('Email:'+profileinfo.getEmail());//
window.location.href='login.jsp?name=profile.getName();
}
功能失效(错误){
警报(错误);
}
函数renderButton(){
gapi.signn2.render('gSignIn'{
“范围”:“配置文件电子邮件”,
“宽度”:580,
身高:75,
"龙缇乐":对,,
“主题”:“黑暗”,
“onsuccess”:onsuccess,
“onfailure”:onfailure
});
}
函数签出(){
var auth2=gapi.auth2.getAuthInstance();
auth2.signOut().then(函数(){
$('.userContent').html('');
$('gSignIn')。向下滑动('slideDown');
$('normalSignIn')。向下滑动('slideDown');
});
}

我得到了答案,在这里发布可能对其他人有所帮助

Login.jsp:-

 <div class = "connect" id="gSignIn"></div>

LoginBackend.jsp:-

**<%@ page langu**age="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
  <%@ page import="java.sql.*" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>Login</title>

</head>

<body>

<%! String userdbName;

String userdbPsw;

String dbUserEmail;

%>

<%

Connection con= null;

PreparedStatement ps = null;

ResultSet rs = null;



String driverName = "com.mysql.jdbc.Driver";

String url = "jdbc:mysql://localhost:3306/logindb";

String user = "root";

String dbpsw = "root";



String sql = "select * from userdetail where email=? and password=?";


String entered_name,entered_email, entered_password ;




     //from form values

    entered_email = request.getParameter("email");

    entered_password = request.getParameter("password");






if(((entered_email!= (null) ||entered_email !=("")) && (entered_password !=(null) || entered_password !=(""))))

{

try{

Class.forName(driverName);

con = DriverManager.getConnection(url, user, dbpsw);

ps = con.prepareStatement(sql);


ps.setString(1, entered_email);

ps.setString(2, entered_password);


rs = ps.executeQuery();

if(rs.next())

{ 
userdbName = rs.getString("name");
dbUserEmail = rs.getString("email");

userdbPsw = rs.getString("password");



    if(entered_email.equals(dbUserEmail) && entered_password.equals(userdbPsw) )

    {
    session.setAttribute("name",userdbName);
    session.setAttribute("email",dbUserEmail);
    session.setAttribute("login_type","normal");
    response.sendRedirect("welcome.jsp"); 

    } 

}

else
    {
    response.sendRedirect("error.jsp");
    }
rs.close();

ps.close(); 

}

catch(SQLException sqe)

{

out.println(sqe);

} 

}

else

{

%>

<center><p style="color:red">Error In Login</p></center>

<% 

getServletContext().getRequestDispatcher("/home.jsp").include(request, 
response);

}

%>

</body>
**
登录
登录时出错

Welcome.JSP:-

 !-- this google client id id for localhost -->
<meta name="google-signin-client_id" content="1015753179876-pphemvpb1o83nakb94s6na33pcjl33l8.apps.googleusercontent.com">


<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>Welcome</title>
<script>
    function signOut() {

      var auth2 = gapi.auth2.getAuthInstance();
      auth2.signOut().then(function () {
          console.log(gapi.auth2.getAuthInstance().isSignedIn);
          console.log('User signed out.');
          alert("Sign out..");
          auth2.disconnect();

         window.location.href = "logout.jsp"; 
      });
   }


    function onLoad() {

      gapi.load('auth2', function() {
        gapi.auth2.init();

      });
    }

    function facebook_logout() 
     {  

      FB.logout(function(response) 
        {
        /* alert("log out 1 " + response);
        */      FB.getLoginStatus(function(response) 
            {
                if (response && response.status === 'connected') 
                {
                    alert("log out " + response);
                    FB.logout(function(response) {
                        alert("log out ");
                        document.location.reload();
                     window.location.href = "logout.jsp"; 

                    });
                }
            });
            window.location.href = "logout.jsp"; 
         });
     }


  </script>




</head>

<body>
<script>
    window.fbAsyncInit = function() {
  FB.init({
    appId      : '323155731439231',
    apiKey     : '323155731439231',
    cookie     : true,  // enable cookies to allow the server to access 
    status     : true,                    // the session
    xfbml      : true,  // parse social plugins on this page
    version    : 'v2.9' // use graph api version 2.8
  });

  // Now that we've initialized the JavaScript SDK, we call 
  // FB.getLoginStatus().  This function gets the state of the
  // person visiting this page and can return one of three states to
  // the callback you provide.  They can be:
  //
  // 1. Logged into your app ('connected')
  // 2. Logged into Facebook, but not your app ('not_authorized')
  // 3. Not logged into Facebook and can't tell if they are logged into
  //    your app or not.
  //
  // These three cases are handled in the callback function.

  FB.getLoginStatus(function(response) {
    statusChangeCallback(response);
  });

  };
   // This is called with the results from from FB.getLoginStatus().
      function statusChangeCallback(response) {
        console.log('statusChangeCallback');
        console.log(response);
        // The response object is returned with a status field that lets the
        // app know the current login status of the person.
        // Full docs on the response object can be found in the documentation
        // for FB.getLoginStatus().
        if (response.status === 'connected') {
          // Logged into your app and Facebook.
          testAPI();
        } else {
          // The person is not logged into your app or we are unable to tell.
          document.getElementById('status').innerHTML = 'Please log ' +
            'into this app.';
        }
      }

      // This function is called when someone finishes with the Login
      // Button.  See the onlogin handler attached to it in the sample
      // code below.
      function checkLoginState() {
        FB.getLoginStatus(function(response) {
          statusChangeCallback(response);
        });
      }

      // Load the SDK asynchronously
      (function(d, s, id) {
        var js, fjs = d.getElementsByTagName(s)[0];
        if (d.getElementById(id)) return;
        js = d.createElement(s); js.id = id;
        js.src = "//connect.facebook.net/en_US/sdk.js";
        fjs.parentNode.insertBefore(js, fjs);
      }(document, 'script', 'facebook-jssdk'));

      // Here we run a very simple test of the Graph API after login is
      // successful.  See statusChangeCallback() for when this call is made.
      function testAPI() {
        console.log('Welcome!  Fetching your information.... ');
       /*  alert("testapi"); */
        FB.api('/me?fields=id,name,email,permissions', function(response) {
          console.log('Successful login for: ' + response.name);
          console.log(response.email);


        });
      }

  </script>
<%--  <p>Welcome, <%=session.getAttribute("name")%></p> --%>
 <%
 if(session.getAttribute("login_type")=="google")
 {
     System.out.println("welcome  by google");
    out.println("Welcome,  " + session.getAttribute("name"));
 %>

    <a href="#" onclick="signOut();">Sign out by google</a>
 <% 
 }
 else if(session.getAttribute("login_type")=="normal")
 {
     out.println("Welcome,  " + session.getAttribute("name"));
%>

<a href="logout.jsp">Logout_Normal</a>
<%
 }
 else if(session.getAttribute("login_type")=="facebook")
 {
     System.out.println("welcome  by facebook");
        out.println("Welcome,  " + session.getAttribute("name"));
         %>

            <a href="#" onclick="facebook_logout();">Sign out by facebook</a>
         <% 
 }

 else 
 {
     response.sendRedirect("home.jsp");
 }
 %>

 <script src="https://apis.google.com/js/client:platform.js?onload=onLoad" async defer> </script>
<script src="js/jquery.min.js"></script>

</body>

</html>
!--此本地主机的google客户端id-->
欢迎
函数签出(){
var auth2=gapi.auth2.getAuthInstance();
auth2.signOut().then(函数(){
log(gapi.auth2.getAuthInstance().isSignedIn);
log('User signed out');
警报(“注销”);
auth2.disconnect();
window.location.href=“logout.jsp”;
});
}
函数onLoad(){
load('auth2',function(){
gapi.auth2.init();
});
}
函数facebook_logout()
{  
FB.注销(功能(响应)
{
/*警报(“注销1”+响应);
*/FB.getLoginStatus(函数(响应)
{
if(response&&response.status==‘已连接’)
{
警报(“注销”+响应);
FB.注销(功能(响应){
警报(“注销”);
document.location.reload();
window.location.href=“logout.jsp”;
});
}
});
window.location.href=“logout.jsp”;
});
}
window.fbAsyninit=函数(){
FB.init({
appId:'323155731439231',
apiKey:'323155731439231',
cookie:true,//启用cookie以允许服务器访问
状态:true,//会话
xfbml:true,//解析此页面上的社交插件
版本:“v2.9”//使用图形api版本2.8
});
//现在我们已经初始化了JavaScript SDK,我们调用
//getLoginStatus()。此函数用于获取
//访问此页面的人,可以将三种状态之一返回到
//您提供的回调。它们可以是:
//
//1.登录到您的应用程序(“已连接”)
//2.登录Facebook,但不登录你的应用程序(“未授权”)
//3.未登录Facebook,无法判断是否已登录
//你的应用与否。
//
//这三种情况在回调函数中处理。
FB.getLoginStatus(函数(响应){
状态更改回调(响应);
});
};
//使用来自FB.getLoginStatus()的结果调用此函数。
函数statusChangeCallback(响应){
log('statusChangeCallback');
控制台日志(响应);
//响应对象返回的状态字段允许
//应用程序知道此人的当前登录状态。
//响应对象的完整文档可以在文档中找到
//对于FB.getLoginStatus()。
如果(response.status===“已连接”){
//登录你的应用程序和Facebook。
testAPI();
}否则{
//此人未登录到您的应用程序,或者我们无法确定。
document.getElementById('status')。innerHTML='Please log'+
“进入此应用程序。”;
}
}
//当某人完成登录时调用此函数
//按钮。请参见示例中附加到它的onlogin处理程序
//代码如下。
函数checkLoginState(){
FB.getLoginStatus(函数(响应){
状态更改回调(响应);
});
}
//异步加载SDK
(功能(d、s、id){
var js,fjs=d.getElementsByTagName[0];
if(d.getElementById(id))返回;
js=d.createElement;js.id=id;
js.src=“//connect.facebook.net/en_US/sdk.js”;
fjs.parentNode.insertBefore(js,fjs);
}(文档“脚本”、“facebook jssdk”);
//在这里,我们在登录完成后运行一个非常简单的Graph API测试
//成功。请参阅statusChangeCallback()了解何时进行此调用。
函数testAPI(){
log('欢迎!获取您的信息…);
/*警报(“testapi”)*/
api('/me?字段=id、名称、电子邮件、权限',函数(响应){
console.log('successfulllogin for:'+response.name);
console.log(response.email);
});
}

我得到了答案,在这里发布可能对其他人有所帮助

Login.jsp:-

 <div class = "connect" id="gSignIn"></div>

LoginBackend.jsp:-

**<%@ page langu**age="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
  <%@ page import="java.sql.*" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>Login</title>

</head>

<body>

<%! String userdbName;

String userdbPsw;

String dbUserEmail;

%>

<%

Connection con= null;

PreparedStatement ps = null;

ResultSet rs = null;



String driverName = "com.mysql.jdbc.Driver";

String url = "jdbc:mysql://localhost:3306/logindb";

String user = "root";

String dbpsw = "root";



String sql = "select * from userdetail where email=? and password=?";


String entered_name,entered_email, entered_password ;




     //from form values

    entered_email = request.getParameter("email");

    entered_password = request.getParameter("password");






if(((entered_email!= (null) ||entered_email !=("")) && (entered_password !=(null) || entered_password !=(""))))

{

try{

Class.forName(driverName);

con = DriverManager.getConnection(url, user, dbpsw);

ps = con.prepareStatement(sql);


ps.setString(1, entered_email);

ps.setString(2, entered_password);


rs = ps.executeQuery();

if(rs.next())

{ 
userdbName = rs.getString("name");
dbUserEmail = rs.getString("email");

userdbPsw = rs.getString("password");



    if(entered_email.equals(dbUserEmail) && entered_password.equals(userdbPsw) )

    {
    session.setAttribute("name",userdbName);
    session.setAttribute("email",dbUserEmail);
    session.setAttribute("login_type","normal");
    response.sendRedirect("welcome.jsp"); 

    } 

}

else
    {
    response.sendRedirect("error.jsp");
    }
rs.close();

ps.close(); 

}

catch(SQLException sqe)

{

out.println(sqe);

} 

}

else

{

%>

<center><p style="color:red">Error In Login</p></center>

<% 

getServletContext().getRequestDispatcher("/home.jsp").include(request, 
response);

}

%>

</body>
**
登录