fastjson 操作Json常用格式数据

importjava.util.ArrayList;
importjava.util.HashMap;
importjava.util.List;
importjava.util.Map;

importcom.alibaba.fastjson.JSON;
importcom.alibaba.fastjson.TypeReference;
publicclassTestMain{

	staticclassPerson{
	privateStringid;
	privateStringname;
	privateintage;
	
	publicPerson(){
	
	}
	publicPerson(Stringid,Stringname,intage){
	this.id=id;
	this.name=name;
	this.age=age;
	}
	publicStringgetId(){
	returnid;
	}
	publicvoidsetId(Stringid){
	this.id=id;
	}
	publicStringgetName(){
	returnname;
	}
	publicvoidsetName(Stringname){
	this.name=name;
	}
	publicintgetAge(){
	returnage;
	}
	publicvoidsetAge(intage){
	this.age=age;
	}
	@Override
	publicStringtoString(){
	return"Person[age="+age+",id="+id+",name="+name+"]";
	}
	
	
	}
	publicstaticvoidmain(String[]args){
	method1();
	method2();
	method3();
	method4();
	}
	
	staticvoidmethod1(){
	System.out.println("JavaBean转化示例开始----------");
	Personperson=newPerson("1001","fastjson",22);
	
	//这里将javabean转化成json字符串
	StringjsonString=JSON.toJSONString(person);
	System.out.println(jsonString);
	//这里将json字符串转化成javabean对象,person=JSON.parSEObject(jsonString,Person.class);
	System.out.println(person.toString());

	}
	
	staticvoidmethod2(){
	System.out.println("List<javabean>转化示例开始----------");
	
	Personperson1=newPerson("1","fastjson1",1);
	Personperson2=newPerson("2","fastjson2",2);
	List<Person>persons=newArrayList<Person>();
	persons.add(person1);
	persons.add(person2);
	StringjsonString=JSON.toJSONString(persons);
	System.out.println("json字符串:"+jsonString);
	
	//解析json字符串
	List<Person>persons2=JSON.parseArray(jsonString,Person.class);
	//输出解析后的person对象
	System.out.println("person1对象："+persons2.get(0).toString());
	System.out.println("person2对象："+persons2.get(1).toString());

	}
	
	staticvoidmethod3(){
	System.out.println("List<String>转化示例开始----------");
	List<String>list=newArrayList<String>();
	list.add("fastjson1");
	list.add("fastjson2");
	list.add("fastjson3");
	StringjsonString=JSON.toJSONString(list);
	System.out.println("json字符串:"+jsonString);
	
	//解析json字符串
	List<String>list2=JSON.parSEObject(jsonString,newTypeReference<List<String>>(){});
	System.out.println(list2.get(0)+"::"+list2.get(1)+"::"+list2.get(2));
	
	}
	
	staticvoidmethod4(){
	System.out.println("List<Map<String,Object>>转化示例开始----------");
	Map<String,Object>map=newHashMap<String,Object>();
	map.put("key1","value1");
	map.put("key2","value2");
	Map<String,Object>map2=newHashMap<String,Object>();
	map2.put("key1",1);
	map2.put("key2",2);
	List<Map<String,Object>>list=newArrayList<Map<String,Object>>();
	list.add(map);
	list.add(map2);
	StringjsonString=JSON.toJSONString(list);
	System.out.println("json字符串:"+jsonString);
	//解析json字符串
	List<Map<String,Object>>list2=JSON.parSEObject(jsonString,newTypeReference<List<Map<String,Object>>>(){});
	
	System.out.println("map的key1值"+list2.get(0).get("key1"));
	System.out.println("map的key2值"+list2.get(0).get("key2"));
	System.out.println("ma2p的key1值"+list2.get(1).get("key1"));
	System.out.println("map2的key2值"+list2.get(1).get("key2"));
	}
}

输出：

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!