要使用Spring Security和Redis实现登录功能，你需要做以下几步：
- 配置Spring Security，使其能够处理登录请求。
- 实现
UserDetailsService来加载用户详情。 - 使用Redis作为缓存，存储用户的认证信息。
以下是一个简化的示例：
1. 添加依赖（pom.xml）
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- Spring Data Redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- Redis 客户端 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</dependency>2. 配置Spring Security (SecurityConfig.java)
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private UserDetailsService userDetailsService;
@Autowired
private RedisTemplate<String, String> redisTemplate;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService);
}
@Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
// 其他配置...
}3. 实现UserDetailsService (CustomUserDetailsService.java)
@Service
public class CustomUserDetailsService implements UserDetailsService {
@Autowired
private RedisTemplate<String, String> redisTemplate;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
// 从数据库或其他存储加载用户详情
// ...
// 假设已经获取用户信息
String password = "encryptedPassword"; // 从数据库获取的密码
boolean enabled = true;
boolean accountNonExpired = true;
boolean credentialsNonExpired = true;
boolean accountNonLocked = true;
UserDetails userDetails = new User(username, password, enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, getAuthorities(username));
// 将用户详情存储到Redis
redisTemplate.opsForValue().set(username, JsonUtils.objectToJson(userDetails));
return userDetails;
}
private Collection<? extends GrantedAuthority> getAuthorities(String username) {
// 获取用户的权限
// ...
return AuthorityUtils.createAuthorityList("ROLE_USER");
}
}4. 创建登录接口 (LoginController.java)