<!-- 安全 Security -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-security</artifactId>
    </dependency>

    <!-- Redis -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>

    <!-- Spring Session Redis -->
    <dependency>
      <groupId>org.springframework.session</groupId>
      <artifactId>spring-session-data-redis</artifactId>
    </dependency>

# 此處省略 redis 連接相關配置
spring:
 session:
  store-type: redis

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http
        .authorizeRequests()
        .antMatchers("/user/**").authenticated()
        .antMatchers("/manager/**").hasAnyRole(RoleEnum.MANAGER.getMessage())
        .anyRequest().permitAll()
        .and().formLogin().loginPage("/login").permitAll()
        .and().logout().permitAll()
        .and().csrf().disable();
  }

}

import com.spring4all.bean.ResponseBean;
import com.spring4all.service.UserService;
import lombok.AllArgsConstructor;
import org.springframework.session.FindByIndexNameSessionRepository;
import org.springframework.session.Session;
import org.springframework.session.data.redis.RedisOperationsSessionRepository;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
@RestController
@AllArgsConstructor
public class UserManageApi {

  private final FindByIndexNameSessionRepository<? extends Session> sessionRepository;

  private final RedisOperationsSessionRepository redisOperationsSessionRepository;

  private final UserService userService;

  /**
   * 管理指定用戶退出登錄
   * @param userId 用戶ID
   * @return 用戶 Session 信息
   */
  @PreAuthorize("hasRole('MANAGER')")
  @GetMapping("/manager/logout/{userId}")
  public ResponseBean data(@PathVariable() Long userId){
    // 查詢 PrincipalNameIndexName（Redis 用戶信息的 key），結(jié)合自身業(yè)務邏輯來實現(xiàn)
    String indexName = userService.getPrincipalNameIndexName(userId);
    // 查詢用戶的 Session 信息，返回值 key 為 sessionId
    Map<String, ? extends Session> userSessions = sessionRepository.findByIndexNameAndIndexValue(FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME, indexName);
    // 移除用戶的 session 信息
    List<String> sessionIds = new ArrayList<>(userSessions.keySet());
    for (String session : sessionIds) {
      redisOperationsSessionRepository.deleteById(session);
    }
    return ResponseBean.success(userSessions);
  }
}