@JsonSerialize不起作用的解决方案

@JsonSerialize(using = ToStringSerializer.class)
private Long parentId;    //转化成功

@JsonSerialize(using = ToStringSerializer.class)
private long parentId;    //转化失败

 public class MySerializerUtils extends JsonSerializer<Integer> {
    @Override
    public void serialize(Integer status, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws ioException, JsonProcessingException {
        String statusStr = "";
         switch (status) {
             case 0:
                 statusStr = "新建状态";
                 break;
             case 1:
                statusStr = "就绪状态";
                 break;
             case 2:
                 statusStr = "运行状态";
                 break;
             case 3:
                 statusStr = "阻塞和唤醒线程";
                 break;
             case 4:
                statusStr = " 死亡状态";
               break;
             default:
                 statusStr = "状态信息不符合";
         }
         jsonGenerator.writeString(statusStr);
     }
 }

@JsonSerialize(using = MySerializerUtils.class)
private int status;