论坛导入rev MySQL
作者:互联网
确保您已使用Maven(或Gradle)设置了Java开发环境以进行依赖性管理。
以下是实施此系统的一步一步:
第1步:项目配置
创建一个新的Spring Boot项目,并将以下依赖项添加到pom.xml
文件中(如果您使用的是Maven):
<dependencies>
<!-- Spring Boot Starter Web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Spring Boot Starter Data JPA -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- Spring Boot Starter Security -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- MySQL Connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
第2步:数据库配置
在application.properties
文件中配置连接到MySQL数据库的属性:
spring.datasource.url=jdbc:mysql://localhost:3306/db_name
spring.datasource.username=db_username
spring.datasource.password=db_password
Substitua db_name
, db_username
e db_password
pelos valores apropriados do seu ambiente.
第3步:创建用户实体
创建一个JPA实体,该实体将代表数据库中的用户:
@Entity
public class Usuario {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String login;
private String senha;
private String token;
// Construtores, getters e setters
}
第4步:创建用户存储库
创建一个JPA存储库,对用户相关数据库执行操作:
@Repository
public interface UsuarioRepository extends JpaRepository<Usuario, Long> {
Usuario findByLogin(String login);
}
第5步:创建身份验证服务
创建一个负责处理身份验证和令牌生成的服务:
@Service
public class AuthenticationService {
@Autowired
private UsuarioRepository usuarioRepository;
public String generateToken(String login) {
// Implemente aqui a lógica para gerar o token (pode ser aleatório ou baseado no login, por exemplo)
return UUID.randomUUID().toString();
}
public boolean authenticate(String login, String senha) {
Usuario usuario = usuarioRepository.findByLogin(login);
if (usuario != null && usuario.getSenha().equals(senha)) {
String token = generateToken(login);
usuario.setToken(token);
usuarioRepository.save(usuario);
return true;
}
return false;
}
public boolean checkToken(String token) {
Usuario usuario = usuarioRepository.findByToken(token);
return usuario != null;
}
}
第6步:配置Spring Security
创建一个Spring Security配置类来定义身份验证和授权规则:
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private AuthenticationService authenticationService;
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.authorizeRequests()
.antMatchers("/login").permitAll()
.anyRequest().authenticated()
.and()
.formLogin().loginPage("/login");
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(new CustomAuthenticationProvider(authenticationService));
}
}
第7步:实施CustomAuthenticationProvider
创建自定义身份验证提供程序来验证用户凭据并设置身份验证:
public class CustomAuthenticationProvider implements AuthenticationProvider {
private final AuthenticationService authenticationService;
public CustomAuthenticationProvider(AuthenticationService authenticationService) {
this.authenticationService = authenticationService;
}
@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
String login = authentication.getName();
String senha = authentication.getCredentials().toString();
if (authenticationService.authenticate(login, senha)) {
return new UsernamePasswordAuthenticationToken(login, senha, new ArrayList<>());
}
throw new BadCredentialsException("Credenciais inválidas.");
}
@Override
public boolean supports(Class<?> authentication) {
return UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication);
}
}
第8步:实现登录和限制访问页面
为用户身份验证和限制访问页面创建页面。例如,创建一个控制器来显示登录页面和令牌登录后的页面:
@Controller
public class AuthController {
@GetMapping("/login")
public String loginPage() {
return "login";
}
@GetMapping("/home")
public String homePage() {
return "home";
}
}
记得为“登录”和“主页”创建各自的HTML页面。
第9步:实施受保护的路线
Para proteger as páginas de acesso restrito, você pode configurar o Spring Security para exigir autenticação para determinadas rotas. Você pode fazer isso no método configure(HttpSecurity http)
da classe SecurityConfig
. Por exemplo:
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.authorizeRequests()
.antMatchers("/login").permitAll()
.antMatchers("/home").authenticated()
.anyRequest().authenticated()
.and()
.formLogin().loginPage("/login");
}
通过这种方式,只有经过身份验证的用户(具有有效令牌)才能访问/home
路由和其他未明确配置的路由。
第10步:实现登录控制器
创建一个控制器来处理登录请求并执行身份验证:
@Controller
public class AuthController {
@Autowired
private AuthenticationService authenticationService;
@PostMapping("/login")
public String login(@RequestParam String login, @RequestParam String senha) {
if (authenticationService.authenticate(login, senha)) {
return "redirect:/home";
} else {
return "login";
}
}
}
标签:rev MySQL,Java,Spring Boot 来源: