JSON.parseArray丢失Long的精度

[wsxe9988]

下面是实体类

@DaTa
@slf4j
public class LiveWaterVO implements Serializable {

private String name;

private Long level1;

private Long level2;

private Long level3;

private Long wl;

@JsonIgnoreProperties(ignoreUnknown = true)
private Long wlSixHoursAgo;

@JsonIgnoreProperties(ignoreUnknown = true)
private Long wlThreeHoursAgo;

@JsonIgnoreProperties(ignoreUnknown = true)
private Long wlOneHourAgo;
}
原来的JSON：

[{"wl":0.01,"name":"西桥","level1":"9","level3":"0.7","level2":"1.4"}]
进行下面的转换后：

List liveWaterVOS = JSON.parseArray(jsonArrayStr,LiveWaterVO.class);
System.out.println(liveWaterVOS);
结果显示如下：
[LiveWaterVO(name=西桥, level1=9, level2=1, level3=0, wl=0, wlSixHoursAgo=null, wlThreeHoursAgo=null, wlOneHourAgo=null)]

ref alibaba/fastjson#4038

[wenshao]

这个有什么问题？

[wsxe9988]

原始json串中 wl值为0.01 parseArray 输出变成0；level3值为0.7 parseArray 输出变成0；level2值为1.4 parseArray 输出变成1,,精度缺失了

[wenshao]

对象类型就是Long，按这个输入，就应该是截断吧

[wsxe9988]

确实是,Long是长整型，会截断，Double就不会丢失精度了