象属性是驼峰的，json中key是下划线，使用JsonField注解，不起作用，在对象转json的过程中，对象中是驼峰的属性全部丢失了
封装的接收类为

import org.nutz.json.JsonField;

/**
 * 单个设备状态
 *
 * @datetime 2020/7/21 14:18
 */
public class DeviceStatus2 {

    /**
     * 设备id，通过查询数据库获取
     */
    @JsonField(value = "device_id")
    private String deviceId;
    /**
     * 设备状态 当值为'OK'时，表示没问题
     */
    @JsonField(value = "status")
    private String status;
    /**
     * 状态描述
     */
    @JsonField(value = "status_str")
    private String statusStr;
    public DeviceStatus2() {
    }
    public DeviceStatus2(String deviceId, String status, String statusStr) {
        this.deviceId = deviceId;
        this.status = status;
        this.statusStr = statusStr;
    }
    public String getDeviceId() {
        return deviceId;
    }
    public void setDeviceId(String deviceId) {
        this.deviceId = deviceId;
    }
    public String getStatus() {
        return status;
    }
    public void setStatus(String status) {
        this.status = status;
    }
    public String getStatusStr() {
        return statusStr;
    }
    public void setStatusStr(String statusStr) {
        this.statusStr = statusStr;
    }
}

测试

 String json = "{\"data\":[{\"device_id\":\"sssss21\",\"status\":\"Fail\",\"status_str\":\"失败到达功\"},{\"device_id\":\"sssss11\",\"status\":\"OK\",\"status_str\":\"ce时成功\"}]}";
        System.out.println("原json----" + json);
        NutMap requestMap = Json.fromJson(NutMap.class, json);
        System.out.println("1----" + Json.toJson(requestMap,JsonFormat.tidy()));
        List<DeviceStatus2> dataList = requestMap.getAsList(PoConsts.DEVICE_STATUS_DATA, DeviceStatus2.class);
        System.out.println("2----" + Json.toJson(dataList,JsonFormat.tidy()));

返回结果如下

原json----{"data":[{"device_id":"sssss21","status":"Fail","status_str":"失败到达功"},{"device_id":"sssss11","status":"OK","status_str":"ce时成功"}]}
1----{"data":[{"device_id":"sssss21","status":"Fail","status_str":"失败到达功"}, {"device_id":"sssss11","status":"OK","status_str":"ce时成功"}]}
2----[{"device_id":null,"status":"Fail","status_str":null}, {"device_id":null,"status":"OK","status_str":null}]