//JsonSerializer<Integer>：Integer為要轉(zhuǎn)換的類型
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 = "暫存";
                break;
            case 1:
                statusStr = "待上報";
                break;
            case 2:
                statusStr = "待審核";
                break;
            case 3:
                statusStr = "已審";
                break;
            case 4:
                statusStr = "退回";
                break;
            case -1:
                statusStr = "已刪";
                break;
            default:
                statusStr = "狀態(tài)信息不符合";
        }
        jsonGenerator.writeString(statusStr);
    }
}

//JsonSerializer<Date>：Date為要轉(zhuǎn)換的類型
public class Date2LongSerializer extends JsonSerializer<Date> {
    @Override
    public void serialize(Date date, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
       jsonGenerator.writeNumber(date.getTime() / 1000);
    }
}

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

//創(chuàng)建時間
@JsonSerialize(using = Date2LongSerializer.class)
private Date creatTime;
//更新時間
@JsonSerialize(using = Date2LongSerializer.class)
private Date updateTime;

@Data
@JsonInclude(JsonInclude.Include.NON_NULL)
public class OrderDTO {
    private String orderId;
    private String buyerName;
    private String buyerPhone;
    private String buyerAddress;    
    private String buyerOpenid;
    List<OrderDetail> orderDetailList;//null,不返回
}

spring:
  jackson:
    default-property-inclusion: non_null

List<OrderDetail> orderDetailList = new ArrayList<>();

private String msr = "";
private String data;

@JsonInclude(JsonInclude.Include.NON_EMPTY)​​

ALWAYS,
NON_NULL, // 屬性為NULL 不序列化,就是為null的字段不參加序列化    
NON_ABSENT, // 屬性為默認值不序列化
NON_EMPTY, // 屬性為 空（""） 或者為 NULL 都不序列化，則返回的json是沒有這個字段的。這樣對移動端會更省流量
NON_DEFAULT,
CUSTOM,
USE_DEFAULTS;

@JsonInclude(JsonInclude.Include.NON_EMPTY)
public class MsgBean {}