Json转list，二层解析转换

一层结构的数据：

{
    "code": "0",
    "results": {
        "boyTotal": 0,
        "classNumber": 0,
        "enrollmentsTotal": 0,
        "girlTotal": 0,
        "mobile": "15969538305",
        "studentTotal": 0,
        "userCode": "141920370",
        "userName": "杜文兵",
        "userType": "1"
    }
}

二层结构的数据：

{
    "code": "0",
    "results": {
        "arrayList": [
            {
                "boyNumber": 61,
                "classId": "159",
                "className": "17建筑工程技术01",
                "deptName": "建筑工程学院",
                "enrollments": 61,
                "girlNumber": 0,
                "majorName": "建筑工程技术",
                "studentNumber": 61,
                "year": "2017"
            },
            {
                "boyNumber": 55,
                "classId": "208",
                "className": "17建筑工程技术02",
                "deptName": "建筑工程学院",
                "enrollments": 56,
                "girlNumber": 1,
                "majorName": "建筑工程技术",
                "studentNumber": 56,
                "year": "2017"
            },
            {
                "boyNumber": 56,
                "classId": "209",
                "className": "17建筑工程技术03",
                "deptName": "建筑工程学院",
                "enrollments": 56,
                "girlNumber": 0,
                "majorName": "建筑工程技术",
                "studentNumber": 56,
                "year": "2017"
            },
            {
                "boyNumber": 4,
                "classId": "237",
                "className": "17学前教育08",
                "deptName": "人文学院",
                "enrollments": 67,
                "girlNumber": 63,
                "majorName": "学前教育",
                "studentNumber": 67,
                "year": "2017"
            },
            {
                "boyNumber": 4,
                "classId": "238",
                "className": "17学前教育09",
                "deptName": "人文学院",
                "enrollments": 67,
                "girlNumber": 63,
                "majorName": "学前教育",
                "studentNumber": 67,
                "year": "2017"
            },
            {
                "boyNumber": 5,
                "classId": "239",
                "className": "17学前教育10",
                "deptName": "人文学院",
                "enrollments": 67,
                "girlNumber": 62,
                "majorName": "学前教育",
                "studentNumber": 67,
                "year": "2017"
            }
        ],
        "boyTotal": 185,
        "classNumber": 6,
        "enrollmentsTotal": 374,
        "girlTotal": 189,
        "studentTotal": 374,
        "userCode": "131530220"
    }
}

先上代码：

    JSONObject  obj1  = new JSONObject();
        obj1.put("mobile", "13008662173");
        //查询员工编号
        
        JSONObject userInfo = ToolsWebReq.sendPost(ToolsWebReq.TEACHER_SERVER_BASE_URL + ToolsWebReq.API_QUERYUSERID,obj1);
        
        List<UserInfo>  userInfos =  (List<UserInfo>) JsonUtils.JsonToList(userInfo.get("results"), new UserInfo());
          
        String userCode = "";
        if(userInfos != null ){
            for (int i = 0; i < userInfos.size(); i++) {
                UserInfo user = userInfos.get(i);
                userCode = user.getUserCode();
            }
            
        }
        System.out.println("userCode="+userCode);
        
        //通过员工编号查询班级数
        List<ClassTeacherE> list2 = null;
                
        JSONObject  obj  = new JSONObject();
        obj.put("userCode", "131530220");
                
        JSONObject classList = ToolsWebReq.sendPost(ToolsWebReq.TEACHER_SERVER_BASE_URL + ToolsWebReq.API_QUERYCLASSNUM,obj);
        //解析第一层
        JSONObject rs = (JSONObject) classList.get("results");
        //解析第二层
        JSONArray arrayList = (JSONArray) rs.get("arrayList");
        
        List<UserClassInfo>  classLists =  (List<UserClassInfo>) JsonUtils.JsonToList(rs.get("arrayList"), new UserClassInfo());
        
        System.out.println("classLists.get(0).getClassName()="+classLists.get(0).getClassName());

方法：

package com.xy.common.util;

import java.util.List;

import net.sf.json.JSONArray;
import net.sf.json.JsonConfig;

public class JsonUtils {

    /**
     * json转对象
     * 
     * @param input
     * @return
     */
    public static List<?> JsonToList(Object object,Object classModel) {
        
        
        JSONArray array = JSONArray.fromObject(object);
        
        List<?>   list2 = net.sf.json.JSONArray.toList(array,classModel, new JsonConfig());//参数1为要转换的JSONArray数据，参数2为要转换的目标数据，即List盛装的数据

        return list2;
    }
}

 对象：

package com.xy.web.entity;

import java.util.Date;
import javax.persistence.*;

public class UserInfo {

    private String boyTotal;
    
    private String classNumber;
    
    private String enrollmentsTotal;
    
    private String girlTotal;
    
    /**
     * 联系电话
     */
    private String mobile;
    
    private String studentTotal;
    
    /**
     * 用户账号
     */
    private String userCode;
    
    /**
     * userName
     */
    private String userName;
    
    /**
     * 用户类型（userType）：1-员工，2-学生
     */
    private String userType;

    public String getBoyTotal() {
        return boyTotal;
    }

    public void setBoyTotal(String boyTotal) {
        this.boyTotal = boyTotal;
    }

    public String getClassNumber() {
        return classNumber;
    }

    public void setClassNumber(String classNumber) {
        this.classNumber = classNumber;
    }

    public String getEnrollmentsTotal() {
        return enrollmentsTotal;
    }

    public void setEnrollmentsTotal(String enrollmentsTotal) {
        this.enrollmentsTotal = enrollmentsTotal;
    }

    public String getGirlTotal() {
        return girlTotal;
    }

    public void setGirlTotal(String girlTotal) {
        this.girlTotal = girlTotal;
    }

    public String getMobile() {
        return mobile;
    }

    public void setMobile(String mobile) {
        this.mobile = mobile;
    }

    public String getStudentTotal() {
        return studentTotal;
    }

    public void setStudentTotal(String studentTotal) {
        this.studentTotal = studentTotal;
    }

    public String getUserCode() {
        return userCode;
    }

    public void setUserCode(String userCode) {
        this.userCode = userCode;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserType() {
        return userType;
    }

    public void setUserType(String userType) {
        this.userType = userType;
    };

}