Spring Boot集成Spring Cache过程详解

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--Spring Cache依赖-->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-cache</artifactId>
</dependency>

@EnableCaching //开启缓存
@SpringBootApplication
public class SpringbootApplication {

  public static void main(String[] args) {
    SpringApplication.run(SpringbootApplication.class, args);
  }

}

@Slf4j
@Service
public class CacheService {

  private Map<Integer, User> dataMap = new HashMap <Integer, User>(){
    {
      for (int i = 1; i < 100 ; i++) {
        User u = new User("code" + i, "name" + i);
        put(i, u);
      }
    }
   };

  // 获取数据
  @Cacheable(value = "cache", key = "'user:' + #id")
  public User get(int id){
    log.info("通过id{}查询获取", id);
    return dataMap.get(id);
  }

  // 更新数据
  @CachePut(value = "cache", key = "'user:' + #id")
  public User set(int id, User u){
    log.info("更新id{}数据", id);
    dataMap.put(id, u);
    return u;
   }
   
  //删除数据
  @CacheEvict(value = "cache", key = "'user:' + #id")
  public User del(int id){
    log.info("删除id{}数据", id);
    dataMap.remove(id);
    return u;
  }

}

@RestController
@RequestMapping("cache")
public class CacheApi {

  @Autowired
  private CacheService cacheService;

  @GetMapping("get")
  public User get(@RequestParam int id){
    return cacheService.get(id);
  }

  @PostMapping("set")
  public User set(@RequestParam int id, @RequestParam String code, @RequestParam String name){
    User u = new User(code, name);
    return cacheService.set(id, u);
  }

  @DeleteMapping("del")
  public void del(@RequestParam int id){
    cacheService.del(id);
  }
}