将enum转换成json

//JDK1.8及以上
//转换方法
public List<SelectForm> getConfig(){
    return Stream.of(Interval.values()).map(
        (interval) -> SelectForm.builder().value(interval.name()).label(interval.getDesc()).build())
        .collect(Collectors.toList());
}

//数据类
public class SelectForm {
  private String value;
  private String label;
}

//时间间隔枚举类
public enum Interval {
  D_1("今天"), D_2("最近3天"), D_7("最近7天"), M_1("最近一个月"), M_3("最近三个月");

  private String desc;

  private Interval(String desc) {
    this.desc = desc;
  }

  public String getDesc() {
    return desc;
  }
}

//返回前台结果
{
  "data": [
    {
      "value": "D_1",
      "label": "今天"
    },
    {
      "value": "D_2",
      "label": "最近3天"
    },
    {
      "value": "D_7",
      "label": "最近7天"
    },
    {
      "value": "M_1",
      "label": "最近一个月"
    },
    {
      "value": "M_3",
      "label": "最近三个月"
    }
  ],
  "code": 200,
  "message": "OK"
}