java源码学习阶段所有的源码

/** * */ /** * @author HP-Developer * */ package test9_12json; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import net.sf.ezmorph.object.DateMorpher; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import net.sf.json.util.JSONUtils; import org.apache.commons.beanutils.PropertyUtils; public class Test { private static void setDataFormat2JAVA(){ //设定日期转换格式 JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(new String[] {"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss"})); } //json转成Object public void testJsonToObj(){ String json = "{id:'1001',name:'张三',age:22}"; Person stu = null; setDataFormat2JAVA(); JSONObject obj = JSONObject.fromObject(json); stu = (Person)JSONObject.toBean(obj, Person.class); System.out.println(stu); } //从一个JSON数组得到一个java对象数组 public void testJsonArrToArray(){ String jsonStus = "[{id:1,name:'jack',age:20},{id:2,name:'rose',age:20},{id:3,name:'admin',age:20}]"; JSONArray array = JSONArray.fromObject(jsonStus); Person[] stu = new Person[array.size()]; for(int i = 0; i < array.size(); i++){ JSONObject jsonObject = array.getJSONObject(i); stu[i] = (Person)JSONObject.toBean(jsonObject, Person.class); } System.out.println(stu[0]); System.out.println(stu[1]); System.out.println(stu[2]); //System.out.println(stu[3]); 会报错 } //从一个JSON数组得到一个java集合 public void testJsonArrToList(){ String jsonStus = "[{id:1,name:'jack',age:20},{id:2,name:'rose',age:20},{id:3,name:'admin',age:20}]"; JSONArray array = JSONArray.fromObject(jsonStus); List<Person> stu = new ArrayList<Person>(); for(int i = 0; i < array.size(); i++){ JSONObject jsonObject = array.getJSONObject(i); stu.add((Person)JSONObject.toBean(jsonObject, Person.class)); } System.out.println(stu.get(0)); System.out.println(stu.get(1)); System.out.println(stu.get(2)); } //从json数组中得到相应java数组 public void testArrayForJson(){ String jsonString = "['q','c','d']"; JSONArray jsonArray = JSONArray.fromObject(jsonString); Object[] strs = jsonArray.toArray(); System.out.print(strs[0]); System.out.print(strs[1]); System.out.print(strs[2]); } //字符串转换成json public void testJsonStrToJSON(){ String json = "['json','is','easy']"; JSONArray jsonArray = JSONArray.fromObject( json ); System.out.println( jsonArray ); // prints ["json","is","easy"] } //Map转换成json public void testMapToJSON(){ Map map = new HashMap(); map.put( "name", "jack" ); 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 ); } //java对象转换为json格式 public void testObjToJson(){ JSONObject obj2=new JSONObject(); obj2.put("phone","123456"); obj2.put("zip","7890"); obj2.put("contact",obj2); System.out.print(obj2); } //复合类型bean转成成json 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); } //一般数组转换成JSON public void testArrayToJSON(){ boolean[] boolArray = new boolean[]{true,false,true}; JSONArray jsonArray = JSONArray.fromObject( boolArray ); System.out.println( jsonArray ); } //Collection对象转换成JSON 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"] } //普通类型的json转换成对象 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); } } private void assertEquals(Object object, Object property) { // TODO Auto-generated method stub } }