json-lib库用法

json-lib依赖

json-lib-2.3-jdk15.jar
=======================
commons-collections-3.1.jar
commons-beanutils.jar
ezmorph-1.0.4.jar
commons-logging-1.1.jar
commons-lang-2.3.jar
xom-1.1.jar

 

package json;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.apache.commons.beanutils.PropertyUtils;import net.sf.ezmorph.bean.MorphDynaBean;import net.sf.json.JSON;import net.sf.json.JSONArray;import net.sf.json.JSONObject;import net.sf.json.xml.XMLSerializer;public class JSONTest {private static String jsonStr = "{/"id/": 1, /"name/": /"haha/", /"email/": [{/"id/": 1, /"address/": /"[e-mail]/"}, {/"id/": 2, /"address/": /"[e-mail]/"}]}";public static class User {private String name;private int age;public User() {}public User(String n, int a) {this.name = n;this.age = a;}public void setName(String n) {this.name = n;}public void setAge(int a) {this.age = a;}public String getName() {return name;}public int getAge() {return age;}}private static User[] getUsers() {return new User[] {new User("name1", 11),new User("name2", 22),new User("name3", 33)};}private static void printValueFromJsonStr() { System.out.println(jsonStr); JSONObject jsonObj = JSONObject.fromObject(jsonStr); String name = jsonObj.getString("name"); System.out.println("name=" + name); JSONArray jsonArr = jsonObj.getJSONArray("email"); for (int i = 0; i < jsonArr.size(); i++) { JSONObject jObj = jsonArr.getJSONObject(i); System.out.println("address=" + jObj.getString("address")); }}private static void strToJsonArray() {String str = "['1','2','3']";JSONArray arr = JSONArray.fromObject(str);System.out.println("strToJsonArray=" + arr.toString());}private static void printValueFromJsonStr1() {System.out.println(jsonStr);JSONObject jsonObj = JSONObject.fromObject(jsonStr);Object bean = JSONObject.toBean(jsonObj);try {String name = (String)PropertyUtils.getProperty(bean, "name");Object email = PropertyUtils.getIndexedProperty(bean, "email", 1);String addr = (String)PropertyUtils.getProperty(email, "address");System.out.println("class=" + email.getClass() + ";addr=" + addr);MorphDynaBean eBean = (MorphDynaBean)email;System.out.println("printValueFromJsonStr1=" + name);} catch (Exception e) {e.printStackTrace();}}private static void strToBean() {String str = "{/"name/": /"haha/", /"age/": 26}";JSONObject obj = JSONObject.fromObject(str);User bean = (User)obj.toBean(obj, User.class);System.out.println("name=" + bean.getName() + ";age=" + bean.getAge());}private static void mapToJson() {Map<String, String> map = new HashMap<String, String>();map.put("key1", "value1");map.put("key2", "value2");map.put("key3", "value3");JSONObject jsonObj = JSONObject.fromObject(map);System.out.println("Map=" + jsonObj.toString());}private static void arrayToJson() {User[] users = getUsers();JSONArray jsonArr = JSONArray.fromObject(users);System.out.println("Array=" + jsonArr.toString());}private static void listToJson() {User[] users = getUsers();List<User> data = new ArrayList<User>();for (int i = 0; i < users.length; i++) {data.add(users[i]);}JSONArray jsonArr = JSONArray.fromObject(data);System.out.println("List=" + jsonArr.toString());}private static void objectToJson() {User user = new User("name", 26);JSONObject jsonObj = JSONObject.fromObject(user);System.out.println("Object=" + jsonObj.toString());}private static void combineToJson() {User[] users = getUsers();Map<String, Object> map = new HashMap<String, Object>();map.put("users", users);map.put("key1", "value1");List<Object> list = new ArrayList<Object>();list.add(map);list.add("test");Map<String, Object> outerMap = new HashMap<String, Object>();outerMap.put("list", list);outerMap.put("flag", "outer");JSONObject jsonObj = JSONObject.fromObject(outerMap);System.out.println("Combine=" + jsonObj.toString());}private static void jsonToXml() {System.out.println(jsonStr);JSONObject jsonObj = JSONObject.fromObject(jsonStr);XMLSerializer x = new XMLSerializer();String xml = x.write(jsonObj);System.out.println("toXml=" + xml);}private static void xmlToJson() {String xml = "<o><email class='array'><e class='object'><address type='string'>[e-mail]</address><id type='number'>1</id></e></email></o>";XMLSerializer x = new XMLSerializer();JSON json = x.read(xml); System.out.println("toJson=" + json.toString());}public static void main(String[] args) {printValueFromJsonStr();printValueFromJsonStr1();strToJsonArray();strToBean();mapToJson();arrayToJson();listToJson();objectToJson();combineToJson();jsonToXml();xmlToJson();}}  

 

 

printValueFromJsonStr方法结果：

{"id": 1, "name": "haha", "email": [{"id": 1, "address": "[e-mail]"}, {"id": 2, "address": "[e-mail]"}]}

name=haha
address=[e-mail]
address=[e-mail]

 

printValueFromJsonStr1方法结果：

{"id": 1, "name": "haha", "email": [{"id": 1, "address": "[e-mail]"}, {"id": 2, "address": "[e-mail]"}]}
class=class net.sf.ezmorph.bean.MorphDynaBean;addr=[e-mail]
printValueFromJsonStr1=haha

 

strToJsonArray方法结果：

strToJsonArray=["1","2","3"]

 

strToBean结果：

name=haha;age=26

 

mapToJson结果：

Map={"key3":"value3","key2":"value2","key1":"value1"}

 

arrayToJson结果：

Array=[{"age":11,"name":"name1"},{"age":22,"name":"name2"},{"age":33,"name":"name3"}]

 

listToJson结果：

List=[{"age":11,"name":"name1"},{"age":22,"name":"name2"},{"age":33,"name":"name3"}]

 

objectToJson结果：

Object={"age":26,"name":"name"}

 

combineToJson结果：

Combine={"flag":"outer","list":[{"users":[{"age":11,"name":"name1"},{"age":22,"name":"name2"},{"age":33,"name":"name3"}],"key1":"value1"},"test"]}

 

jsonToXml结果：

{"id": 1, "name": "haha", "email": [{"id": 1, "address": "[e-mail]"}, {"id": 2, "address": "[e-mail]"}]}
toXml=<?xml version="1.0" encoding="UTF-8"?>
<o><email class="array"><e class="object"><address type="string">[e-mail]</address><id type="number">1</id></e><e class="object"><address type="string">[e-mail]</address><id type="number">2</id></e></email><id type="number">1</id><name type="string">haha</name></o>

 

xmlToJson结果：

toJson={"email":[{"address":"[e-mail]","id":1}]}