Code ví dụ Spring MVC đăng nhập bằng google/gmail

Các công nghệ sử dụng:

• Spring 5.0.2.RELEASE
• Spring Security 5.0.2.RELEASE
• Maven
• Tomcat
• JDK 1.8
• Eclipse + Spring Tool Suite

Tạo ứng dung/project trên google API

(Xem lại: Tạo ứng dụng google+ để đăng nhập thay tài khoản)

Ở đây mình tạo ứng dụng “stackajva-demo-login” với:

• Client ID = 127492257645-9j4f1o189sq15fmg41dr4bmc8u3lv53s.apps.googleusercontent.com
• Client Secret = VN2CMuNb92bRrasiZ0MnXfMU

Tạo Maven Project

Thư viện sử dụng:

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>stackjava.com</groupId>
  <artifactId>SpringMvcGoogle</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <properties>
    <spring.version>5.0.2.RELEASE</spring.version>
    <spring.security.version>5.0.2.RELEASE</spring.security.version>
    <jstl.version>1.2</jstl.version>
  </properties>
  <dependencies>
    <!-- Spring MVC -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- Spring Security -->
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-web</artifactId>
      <version>${spring.security.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-config</artifactId>
      <version>${spring.security.version}</version>
    </dependency>
    <!-- JSP/Servlet -->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <!-- jstl for jsp page -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>${jstl.version}</version>
    </dependency>
    <!-- org.apache.httpcomponents -->
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>fluent-hc</artifactId>
      <version>4.5.5</version>
    </dependency>
    <!-- Jackson -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.3</version>
    </dependency>
  </dependencies>
</project>Code language: HTML, XML (xml)

Mình sử dụng thêm thư viện httpcomponents để gửi request bên trong code Java và jackson  để xử lý dữ liệu JSON

File cấu hình Spring MVC

spring-mvc-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
  <context:component-scan base-package="stackjava.com.springmvcgoogle" />
  <bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix">
      <value>/WEB-INF/views/jsp/</value>
    </property>
    <property name="suffix">
      <value>.jsp</value>
    </property>
  </bean>
</beans>Code language: HTML, XML (xml)

File cấu hình Spring Security

spring-security.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security.xsd">
  <http auto-config="true">
    <intercept-url pattern="/admin**" access="hasRole('ROLE_ADMIN')" />
    <intercept-url pattern="/user**" access="hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')" />
    <access-denied-handler error-page="/403"/>
    <form-login
        login-page="/login"
        login-processing-url="/j_spring_security_login"
        default-target-url="/user"
      authentication-failure-url="/login?message=error"
      username-parameter="username"
      password-parameter="password" />
    <logout logout-url="/j_spring_security_logout"
      logout-success-url="/login?message=logout" delete-cookies="JSESSIONID" />
  </http>
  <authentication-manager>
    <authentication-provider>
      <user-service>
        <user name="kai" password="{noop}123456" authorities="ROLE_ADMIN" />
        <user name="sena" password="{noop}123456" authorities="ROLE_USER" />
      </user-service>
    </authentication-provider>
  </authentication-manager>
</beans:beans>Code language: HTML, XML (xml)

File controller

BaseController.java

package stackjava.com.springmvcgoogle.controller;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import org.apache.http.client.ClientProtocolException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import stackjava.com.springmvcgoogle.common.GooglePojo;
import stackjava.com.springmvcgoogle.common.GoogleUtils;
@Controller
public class BaseController {
  
  @Autowired
  private GoogleUtils googleUtils;
    @RequestMapping(value = { "/", "/login" })
    public String login(@RequestParam(required = false) String message, final Model model) {
      if (message != null && !message.isEmpty()) {
        if (message.equals("logout")) {
          model.addAttribute("message", "Logout!");
        }
        if (message.equals("error")) {
          model.addAttribute("message", "Login Failed!");
        }
        if (message.equals("google_error")) {
          model.addAttribute("message", "Login by Facebook Failed!");
        }
      }
      return "login";
    }
  @RequestMapping("/login-google")
  public String loginGoogle(HttpServletRequest request) throws ClientProtocolException, IOException {
    String code = request.getParameter("code");
    
    if (code == null || code.isEmpty()) {
      return "redirect:/login?message=google_error";
    }
    String accessToken = googleUtils.getToken(code);
    
    GooglePojo googlePojo = googleUtils.getUserInfo(accessToken);
    UserDetails userDetail = googleUtils.buildUser(googlePojo);
    UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetail, null,
        userDetail.getAuthorities());
    authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
    SecurityContextHolder.getContext().setAuthentication(authentication);
    return "redirect:/user";
  }
  @RequestMapping("/user")
  public String user() {
    return "user";
  }
  @RequestMapping("/admin")
  public String admin() {
    return "admin";
  }
  @RequestMapping("/403")
  public String accessDenied() {
    return "403";
  }
}
Code language: JavaScript (javascript)

Method loginGoogle xử lý kết quả trả về từ google

• Lấy code mà google gửi về sau đó đổi code sang access token
• Sử dụng access token lấy thông tin user (có thể thực hiện lưu lại thông tin vào database để quản lý)
• Chuyển thông tin user sang đối tượng UserDetails để spring security quản lý
• Sử dụng đối tượng UserDetails trên giống như thông tin authentication (tương đương với đăng nhập bằng username/password)

File GoogleUtils.java

Thực hiện gửi request tới google (lấy access_token, lấy thông tin tài khoản)

GoogleUtils.java

package stackjava.com.springmvcgoogle.common;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.fluent.Form;
import org.apache.http.client.fluent.Request;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
@Component
public class GoogleUtils {
  
  public static String GOOGLE_CLIENT_ID = "127492257645-9j4f1o189sq15fmg41dr4bmc8u3lv53s.apps.googleusercontent.com";
  public static String GOOGLE_CLIENT_SECRET = "VN2CMuNb92bRrasiZ0MnXfMU";
  public static String GOOGLE_REDIRECT_URI = "http://localhost:8080/SpringMvcGoogle/login-google";
  public static String GOOGLE_LINK_GET_TOKEN = "https://accounts.google.com/o/oauth2/token";
  public static String GOOGLE_LINK_GET_USER_INFO = "https://www.googleapis.com/oauth2/v1/userinfo?access_token=";
  public static String GOOGLE_GRANT_TYPE = "authorization_code";
  public String getToken(final String code) throws ClientProtocolException, IOException {
    String response = Request.Post(GOOGLE_LINK_GET_TOKEN)
        .bodyForm(Form.form().add("client_id", GOOGLE_CLIENT_ID)
            .add("client_secret", GOOGLE_CLIENT_SECRET)
            .add("redirect_uri", GOOGLE_REDIRECT_URI).add("code", code)
            .add("grant_type", GOOGLE_GRANT_TYPE).build())
        .execute().returnContent().asString();
    ObjectMapper mapper = new ObjectMapper();
    JsonNode node = mapper.readTree(response).get("access_token");
    return node.textValue();
  }
  public GooglePojo getUserInfo(final String accessToken) throws ClientProtocolException, IOException {
    String link = GOOGLE_LINK_GET_USER_INFO + accessToken;
    String response = Request.Get(link).execute().returnContent().asString();
    ObjectMapper mapper = new ObjectMapper();
    GooglePojo googlePojo = mapper.readValue(response, GooglePojo.class);
    System.out.println(googlePojo);
    return googlePojo;
  }
  public UserDetails buildUser(GooglePojo googlePojo) {
    boolean enabled = true;
    boolean accountNonExpired = true;
    boolean credentialsNonExpired = true;
    boolean accountNonLocked = true;
    List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
    authorities.add(new SimpleGrantedAuthority("ROLE_USER"));
    UserDetails userDetail = new User(googlePojo.getEmail(),
        "", enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, authorities);
    return userDetail;
  }
}Code language: JavaScript (javascript)

File GooglePojo.java

Dùng để chứa các thông tin tài khoản (email, name…) gửi về từ google.

GooglePojo.java

package stackjava.com.sbgoogle.common;
public class GooglePojo {
  private String id;
  private String email;
  private boolean verified_email;
  private String name;
  private String given_name;
  private String family_name;
  private String link;
  private String picture;
  // getter-setter
}Code language: PHP (php)

Các file view:

login.jsp

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>login</title>
</head>
<body>
  <h1>Spring MVC Security - Login with Google</h1>
  <h2>${message}</h2>
  
  <a href="https://accounts.google.com/o/oauth2/auth?scope=email&redirect_uri=http://localhost:8080/SpringMvcGoogle/login-google&response_type=code
    &client_id=127492257645-9j4f1o189sq15fmg41dr4bmc8u3lv53s.apps.googleusercontent.com&approval_prompt=force">Login With Google</a>  
  <form name='loginForm' action="<c:url value='j_spring_security_login' />" method='POST'>
    <table>
      <tr>
        <td>User:</td>
        <td><input type='text' name='username'></td>
      </tr>
      <tr>
        <td>Password:</td>
        <td><input type='password' name='password' /></td>
      </tr>
      <tr>
        <td colspan='2'><input name="submit" type="submit" value="login" /></td>
      </tr>
    </table>
    <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
  </form>
</body>
</html>Code language: HTML, XML (xml)

admin.jsp

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>Admin Page</title>
</head>
<body>
  <h1>Admin Page</h1>
  <h2>Welcome: ${pageContext.request.userPrincipal.name}</h2>
  <a href="<c:url value="/user" />">User Page</a>
  <br/><br/>
  <form action="<c:url value="/j_spring_security_logout" />" method="post">
    <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
    <input type="submit" value="Logout" />
  </form>
</body>
</html>
Code language: HTML, XML (xml)

user.jsp

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>User Page</title>
</head>
<body>
  <h1>User Page</h1>
  <h2>Welcome: ${pageContext.request.userPrincipal.name}</h2>
  <a href="<c:url value="/admin" />">Admin Page</a>
  <br/><br/>
  <form action="<c:url value="/j_spring_security_logout" />" method="post">
    <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
    <input type="submit" value="Logout" />
  </form>
</body>
</html>
Code language: HTML, XML (xml)

403.jsp

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>403</title>
</head>
<body>
  <h1>403</h1>
  <span>Hi: ${pageContext.request.userPrincipal.name} you do not have permission to access this page</span>
  <a href="<c:url value="/user" />">User Page</a>
  <br/><br/>
  <form action="<c:url value="/j_spring_security_logout" />" method="post">
    <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
    <input type="submit" value="Logout" />
  </form>
</body>
</html>
Code language: HTML, XML (xml)

Demo:

Đăng nhập bình thường bằng tài khoản kai/123456

Đăng nhập bằng tài khoản google (gmail)

Chọn tài khoản gmail sẽ dùng để đăng nhập.

Tài khoản đăng nhập qua gmail không có quyền truy cập trang /admin vì chỉ có role user

Code ví dụ Spring MVC đăng nhập bằng google/gmail stackjava.com

Okay, Done!

Download code ví dụ trên tại đây.

Nguồn: https://stackjava.com/spring/code-vi-du-spring-mvc-dang-nhap-bang-google-gmail.html