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Angular 10 Spring Boot JWT Authentication Example – Angular 6, 8, 9, 10 + Spring Security + MySQL/PostgreSQL
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‎Angular10 SpringBoot Jwt Authentication - Backend Development/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.2.7.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>com.loizenai</groupId>
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<artifactId>SpringBootJwtAuthenticationExamples</artifactId>
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<version>1</version>
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<name>SpringBootJwtAuthenticationExamples</name>
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<description>SpringBootJwtAuthenticationExamples</description>
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<properties>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-security</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<scope>runtime</scope>
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</dependency>
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<!-- For Working with Json Web Tokens (JWT) -->
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<dependency>
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<groupId>io.jsonwebtoken</groupId>
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<artifactId>jjwt</artifactId>
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<version>0.9.0</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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<exclusions>
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<exclusion>
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<groupId>org.junit.vintage</groupId>
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<artifactId>junit-vintage-engine</artifactId>
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</exclusion>
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</exclusions>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎Angular10 SpringBoot Jwt Authentication - Backend Development/src/main/java/com/loizenai/jwtauthentication/SpringBootJwtAuthenticationExamplesApplication.java‎

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package com.loizenai.jwtauthentication;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class SpringBootJwtAuthenticationExamplesApplication {
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public static void main(String[] args) {
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SpringApplication.run(SpringBootJwtAuthenticationExamplesApplication.class, args);
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}
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}

‎Angular10 SpringBoot Jwt Authentication - Backend Development/src/main/java/com/loizenai/jwtauthentication/controller/AuthRestAPIs.java‎

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package com.loizenai.jwtauthentication.controller;
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import java.util.HashSet;
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import java.util.Set;
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import javax.validation.Valid;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.ResponseEntity;
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import org.springframework.security.authentication.AuthenticationManager;
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import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
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import org.springframework.security.core.Authentication;
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import org.springframework.security.core.context.SecurityContextHolder;
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import org.springframework.security.core.userdetails.UserDetails;
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import org.springframework.security.crypto.password.PasswordEncoder;
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import org.springframework.web.bind.annotation.CrossOrigin;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import com.loizenai.jwtauthentication.message.request.LoginForm;
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import com.loizenai.jwtauthentication.message.request.SignUpForm;
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import com.loizenai.jwtauthentication.message.response.JwtResponse;
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import com.loizenai.jwtauthentication.message.response.ResponseMessage;
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import com.loizenai.jwtauthentication.model.Role;
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import com.loizenai.jwtauthentication.model.RoleName;
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import com.loizenai.jwtauthentication.model.User;
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import com.loizenai.jwtauthentication.repository.RoleRepository;
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import com.loizenai.jwtauthentication.repository.UserRepository;
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import com.loizenai.jwtauthentication.security.jwt.JwtProvider;
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@CrossOrigin(origins = "*", maxAge = 3600)
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@RestController
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@RequestMapping("/api/auth")
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public class AuthRestAPIs {
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@Autowired
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AuthenticationManager authenticationManager;
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@Autowired
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UserRepository userRepository;
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@Autowired
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RoleRepository roleRepository;
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@Autowired
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PasswordEncoder encoder;
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@Autowired
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JwtProvider jwtProvider;
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@PostMapping("/signin")
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public ResponseEntity<?> authenticateUser(@Valid @RequestBody LoginForm loginRequest) {
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Authentication authentication = authenticationManager.authenticate(
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new UsernamePasswordAuthenticationToken(loginRequest.getUsername(), loginRequest.getPassword()));
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SecurityContextHolder.getContext().setAuthentication(authentication);
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String jwt = jwtProvider.generateJwtToken(authentication);
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UserDetails userDetails = (UserDetails) authentication.getPrincipal();
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return ResponseEntity.ok(new JwtResponse(jwt, userDetails.getUsername(), userDetails.getAuthorities()));
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}
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@PostMapping("/signup")
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public ResponseEntity<?> registerUser(@Valid @RequestBody SignUpForm signUpRequest) {
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if (userRepository.existsByUsername(signUpRequest.getUsername())) {
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return new ResponseEntity<>(new ResponseMessage("Fail -> Username is already taken!"),
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HttpStatus.BAD_REQUEST);
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}
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if (userRepository.existsByEmail(signUpRequest.getEmail())) {
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return new ResponseEntity<>(new ResponseMessage("Fail -> Email is already in use!"),
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HttpStatus.BAD_REQUEST);
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}
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// Creating user's account
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User user = new User(signUpRequest.getName(), signUpRequest.getUsername(), signUpRequest.getEmail(),
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encoder.encode(signUpRequest.getPassword()));
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Set<String> strRoles = signUpRequest.getRole();
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Set<Role> roles = new HashSet<>();
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strRoles.forEach(role -> {
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switch (role) {
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case "admin":
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Role adminRole = roleRepository.findByName(RoleName.ROLE_ADMIN)
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.orElseThrow(() -> new RuntimeException("Fail! -> Cause: User Role not find."));
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roles.add(adminRole);
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break;
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case "pm":
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Role pmRole = roleRepository.findByName(RoleName.ROLE_PM)
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.orElseThrow(() -> new RuntimeException("Fail! -> Cause: User Role not find."));
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roles.add(pmRole);
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break;
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default:
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Role userRole = roleRepository.findByName(RoleName.ROLE_USER)
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.orElseThrow(() -> new RuntimeException("Fail! -> Cause: User Role not find."));
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roles.add(userRole);
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}
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});
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user.setRoles(roles);
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userRepository.save(user);
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return new ResponseEntity<>(new ResponseMessage("User registered successfully!"), HttpStatus.OK);
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}
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}

‎Angular10 SpringBoot Jwt Authentication - Backend Development/src/main/java/com/loizenai/jwtauthentication/controller/TestRestAPIs.java‎

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package com.loizenai.jwtauthentication.controller;
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import org.springframework.security.access.prepost.PreAuthorize;
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import org.springframework.web.bind.annotation.CrossOrigin;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RestController;
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@CrossOrigin(origins = "*", maxAge = 3600)
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@RestController
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public class TestRestAPIs {
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@GetMapping("/api/test/user")
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@PreAuthorize("hasRole('USER') or hasRole('ADMIN')")
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public String userAccess() {
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return ">>> User Contents!";
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}
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@GetMapping("/api/test/pm")
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@PreAuthorize("hasRole('PM') or hasRole('ADMIN')")
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public String projectManagementAccess() {
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return ">>> Project Management Board";
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}
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@GetMapping("/api/test/admin")
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@PreAuthorize("hasRole('ADMIN')")
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public String adminAccess() {
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return ">>> Admin Contents";
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}
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}

‎Angular10 SpringBoot Jwt Authentication - Backend Development/src/main/java/com/loizenai/jwtauthentication/message/request/LoginForm.java‎

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package com.loizenai.jwtauthentication.message.request;
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import javax.validation.constraints.NotBlank;
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import javax.validation.constraints.Size;
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public class LoginForm {
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@NotBlank
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@Size(min=3, max = 60)
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private String username;
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@NotBlank
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@Size(min = 6, max = 40)
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private String password;
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public String getUsername() {
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return username;
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}
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public void setUsername(String username) {
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this.username = username;
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}
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public String getPassword() {
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return password;
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}
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public void setPassword(String password) {
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this.password = password;
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}
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}

‎Angular10 SpringBoot Jwt Authentication - Backend Development/src/main/java/com/loizenai/jwtauthentication/message/request/SignUpForm.java‎

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package com.loizenai.jwtauthentication.message.request;
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import java.util.Set;
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import javax.validation.constraints.*;
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public class SignUpForm {
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@NotBlank
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@Size(min = 3, max = 50)
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private String name;
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@NotBlank
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@Size(min = 3, max = 50)
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private String username;
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@NotBlank
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@Size(max = 60)
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@Email
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private String email;
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private Set<String> role;
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@NotBlank
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@Size(min = 6, max = 40)
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private String password;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getUsername() {
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return username;
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}
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public void setUsername(String username) {
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this.username = username;
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}
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public String getEmail() {
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return email;
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}
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public void setEmail(String email) {
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this.email = email;
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}
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public String getPassword() {
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return password;
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}
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public void setPassword(String password) {
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this.password = password;
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}
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public Set<String> getRole() {
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return this.role;
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}
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public void setRole(Set<String> role) {
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this.role = role;
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}
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}

‎Angular10 SpringBoot Jwt Authentication - Backend Development/src/main/java/com/loizenai/jwtauthentication/message/response/JwtResponse.java‎

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package com.loizenai.jwtauthentication.message.response;
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import java.util.Collection;
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import org.springframework.security.core.GrantedAuthority;
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public class JwtResponse {
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private String token;
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private String type = "Bearer";
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private String username;
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private Collection<? extends GrantedAuthority> authorities;
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public JwtResponse(String accessToken, String username, Collection<? extends GrantedAuthority> authorities) {
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this.token = accessToken;
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this.username = username;
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this.authorities = authorities;
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}
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public String getAccessToken() {
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return token;
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}
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public void setAccessToken(String accessToken) {
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this.token = accessToken;
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}
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public String getTokenType() {
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return type;
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}
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public void setTokenType(String tokenType) {
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this.type = tokenType;
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}
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public String getUsername() {
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return username;
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}
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public void setUsername(String username) {
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this.username = username;
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}
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public Collection<? extends GrantedAuthority> getAuthorities() {
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return authorities;
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}
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}

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