@Component
public class RedisUtils {

  @Autowired
  private RedisTemplate<String,String> redisTemplate;

  /**
   * 讀取緩存
   * @param key
   * @return
   */
  public String get(final String key){
    return redisTemplate.opsForValue().get(key);
  }

  /**
   * 寫入緩存
   * @param key
   * @param value
   * @return
   */
  public boolean set(final String key,String value){
    boolean result = false;
    try {
      redisTemplate.opsForValue().set(key,value);
      result = true;
    }catch (Exception e){
      e.printStackTrace();
    }
    return result;
  }

  /**
   * 更新緩存
   * @param key
   * @param value
   * @return
   */
  public boolean update(final String key,String value){
    boolean result = false;
    try{
      redisTemplate.opsForValue().getAndSet(key, value);
      result = true;
    }catch (Exception e){
      e.printStackTrace();
    }
    return result;
  }

  /**
   * 刪除緩存
   * @param key
   * @return
   */
  public boolean delete(final String key){
    boolean result = false;
    try{
      redisTemplate.delete(key);
      result = true;
    }catch (Exception e){
      e.printStackTrace();
    }
    return result;
  }

}

@RunWith(SpringRunner.class)
@SpringBootTest
public class RedisUtilsTest {

  @Autowired
  private RedisUtils redisUtils;

  @Test
  public void get() {
    String result = redisUtils.get("test");
    System.out.print("緩存數(shù)據(jù)為:"+result+"\n");
  }

  @Test
  public void set() {
    redisUtils.set("test","123abc");
  }

  @Test
  public void update() {
    redisUtils.update("test","test123");
  }

  @Test
  public void delete() {
    redisUtils.delete("test");
  }
}