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Spring Boot 3.0 – JWT Authentication with Spring Security using MySQL Database

By Nokonwaba Nkukhwana
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In Spring Security 5.7.0, the spring team deprecated the WebSecurityConfigurerAdapter, as they encourage users to move towards a component-based security configuration. Spring Boot 3.0 has come with many changes inSpring Security . In this article, we’ll learn how to implement JWT authentication and authorization in a Spring Boot 3.0 application using Spring Security 6 with MySQL Database.

Demo Project

Step 1: Create a New Spring Boot Project in Spring Initializr

To create a new Spring Boot project, please refer to How to Create a Spring Boot Project in Spring Initializr and Run it in IntelliJ IDEA. For this project choose the following things

  • Project: Maven
  • Language: Java
  • Packaging: Jar
  • Java: 17

 Please choose the following dependencies while creating the project.

  • Spring Web
  • Spring Security
  • MySQL Driver
  • Spring Data JPA
  • Lombok

Additionally, we have added dependencies for JWT also. Below are the dependencies

<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt-api</artifactId>
    <version>0.11.5</version>
</dependency>
<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt-impl</artifactId>
    <version>0.11.5</version>
</dependency>
<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt-jackson</artifactId>
    <version>0.11.5</version>
</dependency>

Below is the complete pom.xml file. Please cross-verify if you have missed some dependencies

XML




<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.8</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.gfg</groupId>
    <artifactId>springboot3-security</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot3-security</name>
    <description>Demo project for Spring Boot 3 Security</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
  
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-api</artifactId>
            <version>0.11.5</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-impl</artifactId>
            <version>0.11.5</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-jackson</artifactId>
            <version>0.11.5</version>
        </dependency>
    </dependencies>
  
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>
  
</project>
 



















Before moving to the project here is the complete project structure.




Step 2: Create a UserController


Go to the src > main > java > controller and create a class UserController and put the below code. In this, we have created a simple REST API in our controller class.






Java

















































import com.ey.springboot3security.entity.AuthRequest;


import com.ey.springboot3security.entity.UserInfo;


import com.ey.springboot3security.service.JwtService;


import com.ey.springboot3security.service.UserInfoService;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.security.access.prepost.PreAuthorize;


import org.springframework.security.authentication.AuthenticationManager;


import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;


import org.springframework.security.core.Authentication;


import org.springframework.security.core.userdetails.UsernameNotFoundException;


import org.springframework.web.bind.annotation.*;


  


@RestController


@RequestMapping("/auth")


public class UserController {


  


    @Autowired


    private UserInfoService service;


  


    @Autowired


    private JwtService jwtService;


  


    @Autowired


    private AuthenticationManager authenticationManager;


  


    @GetMapping("/welcome")


    public String welcome() {


        return "Welcome this endpoint is not secure";


    }


  


    @PostMapping("/addNewUser")


    public String addNewUser(@RequestBody UserInfo userInfo) {


        return service.addUser(userInfo);


    }


  


    @GetMapping("/user/userProfile")


    @PreAuthorize("hasAuthority('ROLE_USER')")


    public String userProfile() {


        return "Welcome to User Profile";


    }


  


    @GetMapping("/admin/adminProfile")


    @PreAuthorize("hasAuthority('ROLE_ADMIN')")


    public String adminProfile() {


        return "Welcome to Admin Profile";


    }


  


    @PostMapping("/generateToken")


    public String authenticateAndGetToken(@RequestBody AuthRequest authRequest) {


        Authentication authentication = authenticationManager.authenticate(new UsernamePasswordAuthenticationToken(authRequest.getUsername(), authRequest.getPassword()));


        if (authentication.isAuthenticated()) {


            return jwtService.generateToken(authRequest.getUsername());


        } else {


            throw new UsernameNotFoundException("invalid user request !");


        }


    }


  


}








































Step 3: Create a SecurityConfig Class


Go to the src > main > java > config and create a class SecurityConfig and put the below code. This is the new changes brought in Spring Boot 3.0.








Java

















































import com.ey.springboot3security.filter.JwtAuthFilter;


import com.ey.springboot3security.service.UserInfoService;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.context.annotation.Bean;


import org.springframework.context.annotation.Configuration;


import org.springframework.security.authentication.AuthenticationManager;


import org.springframework.security.authentication.AuthenticationProvider;


import org.springframework.security.authentication.dao.DaoAuthenticationProvider;


import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;


import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;


import org.springframework.security.config.annotation.web.builders.HttpSecurity;


import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;


import org.springframework.security.config.http.SessionCreationPolicy;


import org.springframework.security.core.userdetails.UserDetailsService;


import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;


import org.springframework.security.crypto.password.PasswordEncoder;


import org.springframework.security.web.SecurityFilterChain;


import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;


  


@Configuration


@EnableWebSecurity


@EnableMethodSecurity


public class SecurityConfig {


  


    @Autowired


    private JwtAuthFilter authFilter;


  


    // User Creation


    @Bean


    public UserDetailsService userDetailsService() {


        return new UserInfoService();


    }


  


    // Configuring HttpSecurity


    @Bean


    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {


        return http.csrf().disable()


                .authorizeHttpRequests()


                .requestMatchers("/auth/welcome", "/auth/addNewUser", "/auth/generateToken").permitAll()


                .and()


                .authorizeHttpRequests().requestMatchers("/auth/user/**").authenticated()


                .and()


                .authorizeHttpRequests().requestMatchers("/auth/admin/**").authenticated()


                .and()


                .sessionManagement()


                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)


                .and()


                .authenticationProvider(authenticationProvider())


                .addFilterBefore(authFilter, UsernamePasswordAuthenticationFilter.class)


                .build();


    }


  


    // Password Encoding


    @Bean


    public PasswordEncoder passwordEncoder() {


        return new BCryptPasswordEncoder();


    }


  


    @Bean


    public AuthenticationProvider authenticationProvider() {


        DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();


        authenticationProvider.setUserDetailsService(userDetailsService());


        authenticationProvider.setPasswordEncoder(passwordEncoder());


        return authenticationProvider;


    }


  


    @Bean


    public AuthenticationManager authenticationManager(AuthenticationConfiguration config) throws Exception {


        return config.getAuthenticationManager();


    }


  


  


}








































Step 4: Create Entity Classes


Go to the src > main > java > entity and create a class UserInfo and put the below code.






Java

















































import jakarta.persistence.Entity;


import jakarta.persistence.GeneratedValue;


import jakarta.persistence.GenerationType;


import jakarta.persistence.Id;


import lombok.AllArgsConstructor;


import lombok.Data;


import lombok.NoArgsConstructor;


  


@Entity


@Data


@AllArgsConstructor


@NoArgsConstructor


public class UserInfo {


  


    @Id


    @GeneratedValue(strategy = GenerationType.IDENTITY)


    private int id;


    private String name;


    private String email;


    private String password;


    private String roles;


  


}








































Similarly, create a class AuthRequest and put the below code.






Java

















































import lombok.AllArgsConstructor;


import lombok.Data;


import lombok.NoArgsConstructor;


  


@Data


@AllArgsConstructor


@NoArgsConstructor


public class AuthRequest {


  


    private String username;


    private String password;


  


}








































Step 5: Create Filter Class


Go to the src > main > java > filter and create a class JwtAuthFilter and put the below code.






Java

















































import com.ey.springboot3security.service.JwtService;


import com.ey.springboot3security.service.UserInfoService;


import jakarta.servlet.FilterChain;


import jakarta.servlet.ServletException;


import jakarta.servlet.http.HttpServletRequest;


import jakarta.servlet.http.HttpServletResponse;


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.Component;


import org.springframework.web.filter.OncePerRequestFilter;


  


import java.io.IOException;


  


// This class helps us to validate the generated jwt token


@Component


public class JwtAuthFilter extends OncePerRequestFilter {


  


    @Autowired


    private JwtService jwtService;


  


    @Autowired


    private UserInfoService userDetailsService;


  


    @Override


    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {


        String authHeader = request.getHeader("Authorization");


        String token = null;


        String username = null;


        if (authHeader != null && authHeader.startsWith("Bearer ")) {


            token = authHeader.substring(7);


            username = jwtService.extractUsername(token);


        }


  


        if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {


            UserDetails userDetails = userDetailsService.loadUserByUsername(username);


            if (jwtService.validateToken(token, userDetails)) {


                UsernamePasswordAuthenticationToken authToken = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());


                authToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));


                SecurityContextHolder.getContext().setAuthentication(authToken);


            }


        }


        filterChain.doFilter(request, response);


    }


}








































Step 6: Create a Repository Interface


Go to the src > main > java > repository and create an interface UserInfoRepository and put the below code.






Java

















































import com.ey.springboot3security.entity.UserInfo;


import org.springframework.data.jpa.repository.JpaRepository;


import org.springframework.stereotype.Repository;


  


import java.util.Optional;


  


@Repository


public interface UserInfoRepository extends JpaRepository<UserInfo, Integer> {


    Optional<UserInfo> findByName(String username);


}








































Step 7: Create Service Classes


Go to the src > main > java > service and create a class JwtService and put the below code.






Java

















































import io.jsonwebtoken.Claims;


import io.jsonwebtoken.Jwts;


import io.jsonwebtoken.SignatureAlgorithm;


import io.jsonwebtoken.io.Decoders;


import io.jsonwebtoken.security.Keys;


import org.springframework.security.core.userdetails.UserDetails;


import org.springframework.stereotype.Component;


  


import java.security.Key;


import java.util.Date;


import java.util.HashMap;


import java.util.Map;


import java.util.function.Function;


  


@Component


public class JwtService {


  


    public static final String SECRET = "5367566B59703373367639792F423F4528482B4D6251655468576D5A71347437";


    public String generateToken(String userName) {


        Map<String, Object> claims = new HashMap<>();


        return createToken(claims, userName);


    }


  


    private String createToken(Map<String, Object> claims, String userName) {


        return Jwts.builder()


                .setClaims(claims)


                .setSubject(userName)


                .setIssuedAt(new Date(System.currentTimeMillis()))


                .setExpiration(new Date(System.currentTimeMillis() + 1000 * 60 * 30))


                .signWith(getSignKey(), SignatureAlgorithm.HS256).compact();


    }


  


    private Key getSignKey() {


        byte[] keyBytes= Decoders.BASE64.decode(SECRET);


        return Keys.hmacShaKeyFor(keyBytes);


    }


  


    public String extractUsername(String token) {


        return extractClaim(token, Claims::getSubject);


    }


  


    public Date extractExpiration(String token) {


        return extractClaim(token, Claims::getExpiration);


    }


  


    public <T> T extractClaim(String token, Function<Claims, T> claimsResolver) {


        final Claims claims = extractAllClaims(token);


        return claimsResolver.apply(claims);


    }


  


    private Claims extractAllClaims(String token) {


        return Jwts


                .parserBuilder()


                .setSigningKey(getSignKey())


                .build()


                .parseClaimsJws(token)


                .getBody();


    }


  


    private Boolean isTokenExpired(String token) {


        return extractExpiration(token).before(new Date());


    }


  


    public Boolean validateToken(String token, UserDetails userDetails) {


        final String username = extractUsername(token);


        return (username.equals(userDetails.getUsername()) && !isTokenExpired(token));


    }


  


  


}








































Similarly, create a class UserInfoDetails and put the below code.








Java

















































import com.ey.springboot3security.entity.UserInfo;


import org.springframework.security.core.GrantedAuthority;


import org.springframework.security.core.authority.SimpleGrantedAuthority;


import org.springframework.security.core.userdetails.UserDetails;


  


import java.util.Arrays;


import java.util.Collection;


import java.util.List;


import java.util.stream.Collectors;


  


public class UserInfoDetails implements UserDetails {


  


    private String name;


    private String password;


    private List<GrantedAuthority> authorities;


  


    public UserInfoDetails(UserInfo userInfo) {


        name = userInfo.getName();


        password = userInfo.getPassword();


        authorities = Arrays.stream(userInfo.getRoles().split(","))


                .map(SimpleGrantedAuthority::new)


                .collect(Collectors.toList());


    }


  


    @Override


    public Collection<? extends GrantedAuthority> getAuthorities() {


        return authorities;


    }


  


    @Override


    public String getPassword() {


        return password;


    }


  


    @Override


    public String getUsername() {


        return name;


    }


  


    @Override


    public boolean isAccountNonExpired() {


        return true;


    }


  


    @Override


    public boolean isAccountNonLocked() {


        return true;


    }


  


    @Override


    public boolean isCredentialsNonExpired() {


        return true;


    }


  


    @Override


    public boolean isEnabled() {


        return true;


    }


}








































Similarly, create a class UserInfoService and put the below code.




Java

















































import com.ey.springboot3security.entity.UserInfo;


import com.ey.springboot3security.repository.UserInfoRepository;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.security.core.userdetails.UserDetails;


import org.springframework.security.core.userdetails.UserDetailsService;


import org.springframework.security.core.userdetails.UsernameNotFoundException;


import org.springframework.security.crypto.password.PasswordEncoder;


import org.springframework.stereotype.Service;


  


import java.util.Optional;


  


@Service


public class UserInfoService implements UserDetailsService {


  


    @Autowired


    private UserInfoRepository repository;


  


    @Autowired


    private PasswordEncoder encoder;


  


    @Override


    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {


  


        Optional<UserInfo> userDetail = repository.findByName(username);


  


        // Converting userDetail to UserDetails


        return userDetail.map(UserInfoDetails::new)


                .orElseThrow(() -> new UsernameNotFoundException("User not found " + username));


    }


  


    public String addUser(UserInfo userInfo) {


        userInfo.setPassword(encoder.encode(userInfo.getPassword()));


        repository.save(userInfo);


        return "User Added Successfully";


    }


  


  


}






































Step 8: Make the following changes in the application.properties file


spring.main.allow-circular-references=true

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/university
spring.datasource.username = root
spring.datasource.password = 143@Arpilu
spring.jpa.hibernate.ddl-auto = update
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl


Test the Application


Now run your application and test it out. Hit the following URL


http://localhost:8080/auth/addNewUser



It will add the user to the database.




Below is our database screenshot.




Now, hit the following URL to generate the token.


http://localhost:8080/auth/generateToken



It will generate the token.




Now using this take we can access our endpoint according to the ROLE. Hit the following URL and put the Bearer token.


http://localhost:8080/auth/user/userProfile


Refer to the screenshot below.



















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Next article
How to Add User Registration with Email Verification in Android?



Nokonwaba Nkukhwana
Experience as a skilled Java developer and proven expertise in using tools and technical developments to drive improvements throughout a entire software development life cycle. I have extensive industry and full life cycle experience in a java based environment, along with exceptional analytical, design and problem solving capabilities combined with excellent communication skills and ability to work alongside teams to define and refine new functionality. Currently working in springboot projects(microservices). Considering the fact that change is good, I am always keen to new challenges and growth to sharpen my skills.



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