2. json-lib 主页 : http://json-lib.sourceforge.net/
3.执行环境
需要以下类库支持
- commons-lang 2.5
- commons-beanutils 1.8.0
- commons-collections 3.2.1
- commons-logging 1.1.1
- ezmorph 1.0.6
4.功能示例
这里通过JUnit-Case例子给出代码示例
- package com.mai.json;
- import static org.junit.Assert.assertEquals;
- import java.util.ArrayList;
- import java.util.Date;
- import java.util.HashMap;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Map;
- import net.sf.ezmorph.Morpher;
- import net.sf.ezmorph.MorpherRegistry;
- import net.sf.ezmorph.bean.BeanMorpher;
- import net.sf.json.JSONArray;
- import net.sf.json.JSONObject;
- import net.sf.json.util.JSONUtils;
- import org.apache.commons.beanutils.PropertyUtils;
- import org.junit.Test;
- public class JsonLibTest {
- /*
- * 普通类型、List、Collection等都是用JSONArray解析
- *
- * Map、自定义类型是用JSONObject解析
- * 可以将Map理解成一个对象,里面的key/value对可以理解成对象的属性/属性值
- * 即{key1:value1,key2,value2......}
- *
- * 1.JSONObject是一个name:values集合,通过它的get(key)方法取得的是key后对应的value部分(字符串)
- * 通过它的getJSONObject(key)可以取到一个JSONObject,--> 转换成map,
- * 通过它的getJSONArray(key) 可以取到一个JSONArray ,
- *
- *
- */
- //一般数组转换成JSON
- @Test
- public void testArrayToJSON(){
- boolean[] boolArray = new boolean[]{true,false,true};
- JSONArray jsonArray = JSONArray.fromObject( boolArray );
- System.out.println( jsonArray );
- // prints [true,false,true]
- }
- //Collection对象转换成JSON
- @Test
- public void testListToJSON(){
- List list = new ArrayList();
- list.add( "first" );
- list.add( "second" );
- JSONArray jsonArray = JSONArray.fromObject( list );
- System.out.println( jsonArray );
- // prints ["first","second"]
- }
- //字符串json转换成json, 根据情况是用JSONArray或JSONObject
- @Test
- public void testJsonStrToJSON(){
- JSONArray jsonArray = JSONArray.fromObject( "['json','is','easy']" );
- System.out.println( jsonArray );
- // prints ["json","is","easy"]
- }
- //Map转换成json, 是用jsonObject
- @Test
- public void testMapToJSON(){
- Map map = new HashMap();
- map.put( "name", "json" );
- map.put( "bool", Boolean.TRUE );
- map.put( "int", new Integer(1) );
- map.put( "arr", new String[]{"a","b"} );
- map.put( "func", "function(i){ return this.arr[i]; }" );
- JSONObject jsonObject = JSONObject.fromObject( map );
- System.out.println( jsonObject );
- }
- //复合类型bean转成成json
- @Test
- public void testBeadToJSON(){
- MyBean bean = new MyBean();
- bean.setId("001");
- bean.setName("银行卡");
- bean.setDate(new Date());
- List cardNum = new ArrayList();
- cardNum.add("农行");
- cardNum.add("工行");
- cardNum.add("建行");
- cardNum.add(new Person("test"));
- bean.setCardNum(cardNum);
- JSONObject jsonObject = JSONObject.fromObject(bean);
- System.out.println(jsonObject);
- }
- //普通类型的json转换成对象
- @Test
- public void testJSONToObject() throws Exception{
- String json = "{name=\"json\",bool:true,int:1,double:2.2,func:function(a){ return a; },array:[1,2]}";
- JSONObject jsonObject = JSONObject.fromObject( json );
- System.out.println(jsonObject);
- Object bean = JSONObject.toBean( jsonObject );
- assertEquals( jsonObject.get( "name" ), PropertyUtils.getProperty( bean, "name" ) );
- assertEquals( jsonObject.get( "bool" ), PropertyUtils.getProperty( bean, "bool" ) );
- assertEquals( jsonObject.get( "int" ), PropertyUtils.getProperty( bean, "int" ) );
- assertEquals( jsonObject.get( "double" ), PropertyUtils.getProperty( bean, "double" ) );
- assertEquals( jsonObject.get( "func" ), PropertyUtils.getProperty( bean, "func" ) );
- System.out.println(PropertyUtils.getProperty(bean, "name"));
- System.out.println(PropertyUtils.getProperty(bean, "bool"));
- System.out.println(PropertyUtils.getProperty(bean, "int"));
- System.out.println(PropertyUtils.getProperty(bean, "double"));
- System.out.println(PropertyUtils.getProperty(bean, "func"));
- System.out.println(PropertyUtils.getProperty(bean, "array"));
- List arrayList = (List)JSONArray.toCollection(jsonObject.getJSONArray("array"));
- for(Object object : arrayList){
- System.out.println(object);
- }
- }
- //将json解析成复合类型对象, 包含List
- @Test
- public void testJSONToBeanHavaList(){
- String json = "{list:[{name:'test1'},{name:'test2'}],map:{test1:{name:'test1'},test2:{name:'test2'}}}";
- // String json = "{list:[{name:'test1'},{name:'test2'}]}";
- Map classMap = new HashMap();
- classMap.put("list", Person.class);
- MyBeanWithPerson diyBean = (MyBeanWithPerson)JSONObject.toBean(JSONObject.fromObject(json),MyBeanWithPerson.class , classMap);
- System.out.println(diyBean);
- List list = diyBean.getList();
- for(Object o : list){
- if(o instanceof Person){
- Person p = (Person)o;
- System.out.println(p.getName());
- }
- }
- }
- //将json解析成复合类型对象, 包含Map
- @Test
- public void testJSONToBeanHavaMap(){
- //把Map看成一个对象
- String json = "{list:[{name:'test1'},{name:'test2'}],map:{testOne:{name:'test1'},testTwo:{name:'test2'}}}";
- Map classMap = new HashMap();
- classMap.put("list", Person.class);
- classMap.put("map", Map.class);
- //使用暗示,直接将json解析为指定自定义对象,其中List完全解析,Map没有完全解析
- MyBeanWithPerson diyBean = (MyBeanWithPerson)JSONObject.toBean(JSONObject.fromObject(json),MyBeanWithPerson.class , classMap);
- System.out.println(diyBean);
- System.out.println("do the list release");
- List<Person> list = diyBean.getList();
- for(Person o : list){
- Person p = (Person)o;
- System.out.println(p.getName());
- }
- System.out.println("do the map release");
- //先往注册器中注册变换器,需要用到ezmorph包中的类
- MorpherRegistry morpherRegistry = JSONUtils.getMorpherRegistry();
- Morpher dynaMorpher = new BeanMorpher( Person.class, morpherRegistry);
- morpherRegistry.registerMorpher( dynaMorpher );
- Map map = diyBean.getMap();
- /*这里的map没进行类型暗示,故按默认的,里面存的为net.sf.ezmorph.bean.MorphDynaBean类型的对象*/
- System.out.println(map);
- /*输出:
- {testOne=net.sf.ezmorph.bean.MorphDynaBean@f73c1[
- {name=test1}
- ], testTwo=net.sf.ezmorph.bean.MorphDynaBean@186c6b2[
- {name=test2}
- ]}
- */
- List<Person> output = new ArrayList();
- for( Iterator i = map.values().iterator(); i.hasNext(); ){
- //使用注册器对指定DynaBean进行对象变换
- output.add( (Person)morpherRegistry.morph( Person.class, i.next() ) );
- }
- for(Person p : output){
- System.out.println(p.getName());
- /*输出:
- test1
- test2
- */
- }
- }
- }
5.下面提供上面例子所需的资源,包括jar包和代码
/Files/mailingfeng/json-lib/json-lib用例所需jar包和java类.rar
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