net.sf.json

JSONObject??? package com.itlwc.test;??? ???? import net.sf.json.JSONArray;??? import net.sf.json.JSONObject;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?// 创建JSONObject?? ??? ??? ?JSONObject jsonObject = new JSONObject();?? ??? ??? ?jsonObject.put("username","lwc");?? ??? ??? ?jsonObject.put("password","123");?? ??? ??? ?// 打印:1?? ??? ??? ?System.out.println(jsonObject);??? ??? ??? ??? ?// 增加属性,打印:2?? ??? ??? ?jsonObject.element("sex","男");?? ??? ??? ?System.out.println(jsonObject);?? ??? ??? ??? ??? ??? ?// 根据key返回,打印:3?? ??? ??? ?System.out.println(jsonObject.get("sex"));??? ??? ??? ??? ?// 判读输出对象的类型?? ??? ??? ?boolean isArray = jsonObject.isArray();?? ??? ??? ?boolean isEmpty = jsonObject.isEmpty();?? ??? ??? ?boolean isNullObject = jsonObject.isNullObject();?? ??? ??? ?// 打印:4?? ??? ??? ?System.out.println("是否数组:" + isArray + " 是否空:" + isEmpty + " 是否空对象:"?? ??? ??? ??? ??? ?+ isNullObject);?? ??? ??? ??? ??? ??? ?// 把JSONArray增加到JSONObject中?? ??? ??? ?JSONArray jsonArray = new JSONArray();?? ??? ??? ?jsonArray.add(0,"lwc");?? ??? ??? ?jsonArray.add(1,"nxj");?? ??? ??? ?// 开始增加?? ??? ??? ?jsonObject.element("student",jsonArray);?? ??? ??? ?// 打印:5?? ??? ??? ?System.out.println(jsonObject);?? ??? ?}??? }??? /*??? 打印结果?? ??? ?{"username":"lwc","password":"123"}?? ??? ?{"username":"lwc","password":"123","sex":"男"}?? ??? ?男?? ??? ?是否为数组:false 是否为空:false 是否为空对象:false?? ??? ?{"username":"lwc","sex":"男","student":["lwc","nxj"]}??? */JSONArray??? package com.itlwc.test;??? ???? import net.sf.json.JSONArray;??? import net.sf.json.JSONObject;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?//创建JSONArray?? ??? ??? ?JSONArray jsonArray = new JSONArray();??????????? jsonArray.add(0,"lwc");? ???????????? jsonArray.add(1,"nxj");??????????? jsonArray.element("mxj");??????????? //打印:1??????????? System.out.println(jsonArray);?????????? ???????????? //根据下标返回,打印:2??????????? System.out.println(jsonArray.get(0));?????????? ???????????? //根据下标设置新值,打印:3??????????? jsonArray.set(0,"itlwc");??????????? System.out.println(jsonArray);?????????? ???????????? //把JSONObject放入到JSONArray中??????????? JSONObject jsonObject = new JSONObject();?? ??? ??? ?jsonObject.put("username","123");?? ??? ??? ?//开始增加,打印:4?? ??? ??? ?jsonArray.add(jsonObject);?? ??? ??? ?System.out.println(jsonArray);?? ??? ??? ??? ??? ??? ?//遍历,打印:5?? ??? ??? ?for(int i=0;i<jsonArray.size();i++){?? ??? ??? ??? ?System.out.print(jsonArray.get(i)+"t");?? ??? ??? ?}?? ??? ?}??? }??? /*??? 打印结果?? ??? ?["lwc","nxj","mxj"]?? ??? ?lwc?? ??? ?["itlwc","mxj"]?? ??? ?["itlwc","mxj",{"username":"lwc","password":"123"}]?? ??? ?itlwc?? ?nxj?? ?mxj?? ?{"username":"lwc","password":"123"}??? */JavaBean与json字符串互转??? package com.itlwc.test;??? ???? import net.sf.json.JSONObject;??? ???? import com.itlwc.entity.Student;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?// JavaBean对象转json字符串?? ??? ??? ?Student stu1 = new Student("lwc","222221");?? ??? ??? ?JSONObject jsonObject = JSONObject.fromObject(stu1);?? ??? ??? ?System.out.println(jsonObject);??? ??? ??? ??? ?// json字符串转JavaBean?? ??? ??? ?String jsondata = "{"password":"222221","username":"lwc"}";?? ??? ??? ?JSONObject jsonObject1 = JSONObject.fromObject(jsondata);?? ??? ??? ?Student stu2 = (Student) JSONObject.toBean(jsonObject1,Student.class);?? ??? ??? ?System.out.println(stu2);?? ??? ?}??? }??? /*??? 打印结果:?? ??? ?{"password":"222221","username":"lwc"}?? ??? ?用户: lwc 密码:222221??? */List与json字符串互转??? package com.itlwc.test;??? ???? import java.util.ArrayList;??? import java.util.List;??? ???? import net.sf.json.JSONArray;??? import net.sf.json.JSONObject;??? ???? import com.itlwc.entity.Student;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?// List转json字符串?? ??? ??? ?List list = new ArrayList();?? ??? ??? ?list.add(new Student("lwc","222221"));?? ??? ??? ?list.add(new Student("nxj","222222"));?? ??? ??? ?JSONArray jsonArray = JSONArray.fromObject(list);?? ??? ??? ?System.out.println(jsonArray);??? ??? ??? ??? ?// json字符串转List?? ??? ??? ?List list1 = new ArrayList();?? ??? ??? ?String jsondata = "[{"password":"222221","username":"lwc"},{"password":"222222","username":"nxj"}]";?? ??? ??? ?JSONArray jsonArray1 = JSONArray.fromObject(jsondata);?? ??? ??? ?for (int i = 0; i < jsonArray1.size(); i++) {?? ??? ??? ??? ?JSONObject jsonObject2 = jsonArray1.getJSONObject(i);?? ??? ??? ??? ?Student stu2 = (Student) JSONObject.toBean(jsonObject2,?? ??? ??? ??? ??? ??? ?Student.class);?? ??? ??? ??? ?list1.add(stu2);?? ??? ??? ?}?? ??? ??? ?System.out.println(list1);?? ??? ?}??? }??? /*??? 打印结果:?? ??? ?[{"password":"222221","username":"lwc"},{"password":"222222","username":"nxj"}]?? ??? ?[用户: lwc 密码:222221,用户: nxj 密码:222222]??? */Map与json字符串互转??? package com.itlwc.test;??? ???? import java.util.HashMap;??? import java.util.Iterator;??? import java.util.Map;??? import java.util.Set;??? ???? import net.sf.json.JSONObject;??? ???? import com.itlwc.entity.Student;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?// Map转json字符串?? ??? ??? ?Map map = new HashMap();?? ??? ??? ?map.put("1",new Student("lwc","222221"));?? ??? ??? ?map.put("2",new Student("nxj","222222"));?? ??? ??? ?JSONObject jsonMap = JSONObject.fromObject(map);?? ??? ??? ?System.out.println(jsonMap);??? ??? ??? ??? ?// json字符串转Map?? ??? ??? ?String jsondata = "{"2":{"password":"222222","username":"nxj"},"1":{"password":"222221","username":"lwc"}}";?? ??? ??? ?Map map1 = (Map) JSONObject.fromObject(jsondata);?? ??? ??? ?Set set = map1.keySet();?? ??? ??? ?Iterator ite = set.iterator();?? ??? ??? ?while (ite.hasNext()) {?? ??? ??? ??? ?String key = (String) ite.next();?? ??? ??? ??? ?JSONObject jsonObject = JSONObject.fromObject(map1.get(key));?? ??? ??? ??? ?Student stu = (Student) JSONObject?? ??? ??? ??? ??? ??? ?.toBean(jsonObject,Student.class);?? ??? ??? ??? ?System.out.println(key + " " + stu);?? ??? ??? ?}??? ??? ??? ?}??? }??? /*??? 打印结果: ?? ??? ?{"2":{"password":"222222","username":"nxj"},"1":{"password":"222221","username":"lwc"}}?? ??? ?2 用户: nxj 密码:222222?? ??? ?1 用户: lwc 密码:222221??? */JSONArray与List互转??? package com.itlwc.test;??? ???? import java.util.ArrayList;??? import java.util.Iterator;??? import java.util.List;??? ???? import net.sf.json.JSONArray;??? import net.sf.json.JsonConfig;??? ???? import com.itlwc.entity.Student;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?//List转型JSONArray?? ??? ??? ?List<Student> list = new ArrayList<Student>(); ??? ??? ??? ?list.add(new Student("lwc","222222")); ??????????? JSONArray jsonArray = JSONArray.fromObject(list);??????????? System.out.println(jsonArray.toString());?????????? ???????????? //JSONArray转型List?? ??? ??? ?List<Student> list2 = JSONArray.toList(jsonArray,new Student(),new JsonConfig());?? ??? ??? ?Iterator<Student> ite =? list2.iterator();?? ??? ??? ?while(ite.hasNext()){?? ??? ??? ??? ?Student stu =ite.next();?? ??? ??? ??? ?System.out.println(stu);?? ??? ??? ?}?? ??? ?}??? }??? /*??? 打印结果?? ??? ?[{"password":"222221","username":"nxj"}]?? ??? ?用户: lwc 密码:222221?? ??? ?用户: nxj 密码:222222??? */JSONArray与数组互转??? package com.itlwc.test;??? ???? import net.sf.json.JSONArray;??? ???? public class Test {?? ??? ?public static void main(String[] args) {?? ??? ??? ?// Java数组转JSONArray?? ??? ??? ?boolean[] boolArray = new boolean[] { true,false,true };?? ??? ??? ?JSONArray jsonArray = JSONArray.fromObject(boolArray);?? ??? ??? ?System.out.println(jsonArray.toString());??? ??? ??? ??? ?// JSONArray转Java数组?? ??? ??? ?Object obj[] = jsonArray.toArray();?? ??? ??? ?for (Object o : obj) {?? ??? ??? ??? ?System.out.print(o + " ");?? ??? ??? ?}?? ??? ?}??? }??? /*??? 打印结果 :?? ??? ?[true,true]?? ??? ?true false true ??? */XML与JSON互转需要导入xom-1.1.jar??? package com.itlwc.test;??? ???? import net.sf.json.JSON;??? import net.sf.json.JSONObject;??? import net.sf.json.xml.XMLSerializer;??? ???? public class Test {?? ??? ?public static void main(String[] args) throws Exception {?? ??? ??? ?// XML转JSON?? ??? ??? ?String xml = "<root>" + "<name type=‘type‘>zhaipuhong</name>"?? ??? ??? ??? ??? ?+ "<gender>male</gender>" + "<birthday>" + "<year>1970</year>"?? ??? ??? ??? ??? ?+ "<month>12</month>" + "<day>17</day>" + "</birthday>"?? ??? ??? ??? ??? ?+ "</root>";?? ??? ??? ?XMLSerializer xmlSerializer = new XMLSerializer();?? ??? ??? ?JSON json = xmlSerializer.read(xml);?? ??? ??? ?System.out.println(json.toString(2));??? ??? ??? ??? ?// JSON转XML?? ??? ??? ?String jsondata = "{"root":{" + ""name":"zhaipuhong","?? ??? ??? ??? ??? ?+ ""gender":"male"," + ""birthday":{"?? ??? ??? ??? ??? ?+ ""year":"1970"," + ""month":"12"," + ""day":"17""?? ??? ??? ??? ??? ?+ "}" + "}" + "}";?? ??? ??? ?JSONObject jsonObject = JSONObject.fromObject(jsondata);?? ??? ??? ?String xmlstr = new XMLSerializer().write(jsonObject);?? ??? ??? ?System.out.println(xmlstr);?? ??? ?}??? }??? /*??? 打印结果:?? ??? ?{?? ??? ?? "name": "zhaipuhong",?? ??? ?? "gender": "male",?? ??? ?? "birthday":?? {?? ??? ???? "year": "1970",?? ??? ???? "month": "12",?? ??? ???? "day": "17"?? ??? ?? }?? ??? ?}?? ??? ?<?xml version="1.0" encoding="UTF-8"?>?? ??? ?<o>?? ??? ??? ?<root class="object">?? ??? ??? ??? ?<birthday class="object">?? ??? ??? ??? ??? ?<day type="string">17</day>?? ??? ??? ??? ??? ?<month type="string">12</month>?? ??? ??? ??? ??? ?<year type="string">1970</year>?? ??? ??? ??? ?</birthday>?? ??? ??? ??? ?<gender type="string">male</gender>?? ??? ??? ??? ?<name type="string">zhaipuhong</name>?? ??? ??? ?</root>?? ??? ?</o>??? */