列子如下：

package com.gbt.utils;

import java.util.ArrayList;
import java.util.List;

import com.gbt.model.Accesstoken;
import com.gbt.model.ResponseBoxMessage;
import com.gbt.model.SubmitResultReturn;
import com.gbt.model.TaskPageFileTask;
import com.gbt.model.TaskResultMessage;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class JsonUtil {
    @SuppressWarnings("rawtypes")
    public static Object jsonString2Object(String jsonString,Class pojoCalss) {

        Object pojo;

        JSONObject jsonObject = JSONObject.fromObject(jsonString);

        pojo = JSONObject.toBean(jsonObject,pojoCalss);

        return pojo;

    }

    public static String object2JsonString(Object javaObj) {

        JSONObject json;

        json = JSONObject.fromObject(javaObj);

        return json.toString();

    }

    @SuppressWarnings({ "rawtypes","unchecked" })
    public static List jsonList2JavaList(String jsonString,Class pojoClass) {

        JSONArray jsonArray = JSONArray.fromObject(jsonString);

        JSONObject jsonObject;

        Object pojoValue;

        List list = new ArrayList();

        for (int i = 0; i < jsonArray.size(); i++) {

            jsonObject = jsonArray.getJSONObject(i);

            pojoValue = JSONObject.toBean(jsonObject,pojoClass);

            list.add(pojoValue);

        }

        return list;

    }

    /** * 获取AccessToken对象 * * @param jsonString * @return */
    public static Accesstoken getAccessToken(String jsonString) {
        Accesstoken token = new Accesstoken();
        JSONObject item = JSONObject.fromObject(jsonString);
        token.setAccesstoken(item.getString("access_token"));
        token.setExpiresin(item.getString("expires_in"));
        token.setStatus(item.getString("status"));
        token.setInfo(item.getString("info"));
        return token;
    }

    /** * 返回ResponseBoxMessage箱子信息 * * @param jsonString * @return */
    public static List<ResponseBoxMessage> getResponseBoxMessage(
            String jsonString) {

        List<ResponseBoxMessage> Boxlist = new ArrayList<ResponseBoxMessage>();
        JSONArray array = JSONArray.fromObject(jsonString);
        for (int i = 0; i < array.size(); i++) {
            ResponseBoxMessage Box = new ResponseBoxMessage();
            // 获取各个属性的值
            JSONObject item = array.getJSONObject(i);
            Box.setTaskNo(item.getString("taskNo"));
            Box.setTaskType(item.getString("taskType"));
            Box.setTaskTime(item.getString("taskTime"));
            Box.setTaskTimeLimit(item.getInt("taskTimeLimit"));
            Box.setCabinetNo(item.getString("cabinetNo"));
            Box.setBoxType(item.getString("BoxType"));
            Box.setBoxNo(item.getInt("BoxNo"));
            Box.setLatticeNo(item.getString("latticeNo"));
            Box.setCardNo(item.getString("cardNo"));
            Box.setFileNos(item.getString("fileNos"));
            Box.setStatus(item.getInt("status"));
            Box.setInfo(item.getString("info"));
            Boxlist.add(Box);
        }

        return Boxlist;
    }

    /** * 返回执行消息 * @param jsonString * @return */
    public static TaskResultMessage getTaskResultMessage(String jsonString) {
        TaskResultMessage task = new TaskResultMessage();
        JSONObject item = JSONObject.fromObject(jsonString);
        task.setTaskNo(item.getString("taskNo"));
        task.setTaskType(item.getString("taskType"));
        task.setTaskResult(item.getString("taskResult"));
        task.setTaskTime(item.getString("taskTime"));
        task.setCabinetNo(item.getString("cabinetNo"));
        task.setBoxType(item.getString("BoxType"));
        task.setBoxNo(item.getInt("BoxNo"));
        task.setLatticeNo(item.getString("latticeNo"));
        task.setCardNo(item.getString("cardNo"));
        task.setFileNos(item.getString("fileNos"));
        task.setStatus(item.getInt("status"));
        task.setInfo(item.getString("info"));
        return task;
    }

    /*** * * @param jsonString * @return */
    @SuppressWarnings("unchecked")
    public static TaskPageFileTask getTaskPageFileTask(String jsonString){

        TaskPageFileTask filetask = new TaskPageFileTask();
        JSONObject item = JSONObject.fromObject(jsonString);
        filetask.setCurrentPage(item.getString("currentPage"));
        filetask.setPageSize(item.getString("pageSize"));
        filetask.setTotalSize(item.getString("totalSize"));
        filetask.setAccess_token(item.getString("access_token"));
        filetask.setFileTasks(item.getJSONArray("fileTasks"));
        filetask.setStatus(item.getString("status"));
        filetask.setInfo(item.getString("info"));
        return filetask;

    }

    /** * 提交任务返回结果 * @param jsonString * @return */
    public static SubmitResultReturn getSubmitResultReturn(String jsonString){

        SubmitResultReturn sub = new SubmitResultReturn();
        JSONObject item = JSONObject.fromObject(jsonString);
        sub.setAccesstoken(item.getString("access_token"));
        sub.setStatus(item.getString("status"));
        sub.setInfo(item.getString("info"));
        return sub;

    }

}