1.数组解析：

  BatteryBox boxInfo = new BatteryBox();
            boxInfo.setSize(jsonObject.getString("size"));
            boxInfo.setHwVer(jsonObject.getString("hwVer"));
            boxInfo.setFwVer(jsonObject.getString("fwVer"));
            boxInfo.setAlarm(jsonObject.getInt("alarm"));
            boxInfo.setSn(jsonObject.getString("sn"));
            JSONArray jsonArray = jsonObject.getJSONArray("slots");
            List<BatterySlot> slotList = new ArrayList<>();
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject1 = jsonArray.getJSONObject(i);
                BatterySlot slot = new BatterySlot();
                slot.setFloor(jsonObject1.getInt("floor"));
                slot.setType(jsonObject1.getString("type"));
                slot.setAlive(jsonObject1.getBoolean("isAlive"));
                slot.setLoaderVer(jsonObject1.getString("loaderVer"));
                slot.setLoaderDate(jsonObject1.getString("loaderDate"));
                slot.setAppVer(jsonObject1.getString("appVer"));
                slot.setAppDate(jsonObject1.getString("appDate"));
                slot.setSlotSn(jsonObject1.getString("slotSn"));
                slotList.add(slot);
            }
            boxInfo.setSlots(slotList);
            return boxInfo;

工具类：

package com.thirtydays.smartgarage.entity;

import java.util.List;

/**
 * 充电柜
 */
public class BatteryBox {
    private String requestType;
    private int resultCode;
    private String size;
    private String hwVer;
    private String fwVer;
    private int alarm;
    private String sn;
    private List<BatterySlot> slots;

    public String getRequestType() {
        return requestType;
    }

    public void setRequestType(String requestType) {
        this.requestType = requestType;
    }

    public int getResultCode() {
        return resultCode;
    }

    public void setResultCode(int resultCode) {
        this.resultCode = resultCode;
    }

    public String getSize() {
        return size;
    }

    public void setSize(String size) {
        this.size = size;
    }

    public String getHwVer() {
        return hwVer;
    }

    public void setHwVer(String hwVer) {
        this.hwVer = hwVer;
    }

    public String getFwVer() {
        return fwVer;
    }

    public void setFwVer(String fwVer) {
        this.fwVer = fwVer;
    }

    public int getAlarm() {
        return alarm;
    }

    public void setAlarm(int alarm) {
        this.alarm = alarm;
    }

    public String getSn() {
        return sn;
    }

    public void setSn(String sn) {
        this.sn = sn;
    }

    public List<BatterySlot> getSlots() {
        return slots;
    }

    public void setSlots(List<BatterySlot> slots) {
        this.slots = slots;
    }

    @Override
    public String toString() {
        return "BatteryBox{" +
                "requestType='" + requestType + '\'' +
                ", resultCode=" + resultCode +
                ", size='" + size + '\'' +
                ", hwVer='" + hwVer + '\'' +
                ", fwVer='" + fwVer + '\'' +
                ", alarm=" + alarm +
                ", sn='" + sn + '\'' +
                ", slots=" + slots +
                '}';
    }
}

嵌套类里面的嵌套内容List：

package com.thirtydays.smartgarage.entity;

/**
 * 充电槽
 */
public class BatterySlot {
    private int floor;
    private String type;
    private boolean isAlive;
    private String loaderVer;
    private String loaderDate;
    private String appVer;
    private String appDate;
    private String slotSn;

    public boolean isAlive() {
        return isAlive;
    }

    public void setAlive(boolean alive) {
        isAlive = alive;
    }

    public int getFloor() {
        return floor;
    }

    public void setFloor(int floor) {
        this.floor = floor;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getLoaderVer() {
        return loaderVer;
    }

    public void setLoaderVer(String loaderVer) {
        this.loaderVer = loaderVer;
    }

    public String getLoaderDate() {
        return loaderDate;
    }

    public void setLoaderDate(String loaderDate) {
        this.loaderDate = loaderDate;
    }

    public String getAppVer() {
        return appVer;
    }

    public void setAppVer(String appVer) {
        this.appVer = appVer;
    }

    public String getAppDate() {
        return appDate;
    }

    public void setAppDate(String appDate) {
        this.appDate = appDate;
    }

    public String getSlotSn() {
        return slotSn;
    }

    public void setSlotSn(String slotSn) {
        this.slotSn = slotSn;
    }

    @Override
    public String toString() {
        return "BatterySlot{" +
                "floor=" + floor +
                ", type='" + type + '\'' +
                ", loaderVer='" + loaderVer + '\'' +
                ", loaderDate='" + loaderDate + '\'' +
                ", appVer='" + appVer + '\'' +
                ", appDate='" + appDate + '\'' +
                ", slotSn='" + slotSn + '\'' +
                '}';
    }
}

2.普通解析：

   JSONObject jsonObject;
        try {
            jsonObject = new JSONObject(data);
        } catch (Exception e) {
            ToastUtils.showShort("数据转JSON失败:" + e.toString());
            if (isDebug) {
                //  从Throwable获取可记录的堆栈跟踪
                String error = "Parse data failed." + Log.getStackTraceString(e);
                writeToFile(error);
            }
            return;
        }

        if (jsonObject.getInt("resultCode") == 0) {
            switch (jsonObject.getString("requestType")) {
                case "BOX_INFO":
                    BatteryBox boxInfo = parseToBoxInfo(jsonObject);
                    if (null == boxInfo) {
                        return;
                    }
                    if (null != listener) {
                        listener.onGetBoxInfo(boxInfo);
                    } else {
                        ToastUtils.showShort("消息监听器为空");
                    }
                    break;
                case "SLOT_STATIC_DATA":
                    SlotStaticInfo slotInfo = parseToStaticBatteryInfo(jsonObject);
                    if (null == slotInfo) {
                        return;
                    }
                    if (null != listener) {
                        listener.onGetSlotStaticData(slotInfo);
                    } else {
                        ToastUtils.showShort("消息监听器为空");
                    }
                    break;
                case "SLOT_DYNAMIC_DATA":
                    SlotDynamicInfo dynamicSlotInfo = parseToDynamicBatteryInfo(jsonObject);
                    if (null == dynamicSlotInfo) {
                        return;
                    }
                    if (null != listener) {
                        listener.onGetSlotDynamicData(dynamicSlotInfo);
                    } else {
                        ToastUtils.showShort("消息监听器为空");
                    }
                    break;
            }
        }