net.sf.json.JSONArray & net.sf.json.JSONObject

最新推荐文章于 2021-11-13 17:31:48 发布

JuvenileCode

最新推荐文章于 2021-11-13 17:31:48 发布

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CC 4.0 BY-SA版权

文章标签： JSON

本文链接：https://blog.youkuaiyun.com/DOTA_liu_bin/article/details/50112287

本文通过具体示例介绍如何在Java中实现对象与JSON之间的转换，包括List、Bean及简单数组的转换过程，并展示了如何从JSON反序列化为Java对象。

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Jar包：

public class MaxText {

public static void main(String[] args) {
MaxBean mb= new MaxBean();

Stude st1=new Stude();
st1.setId(101);
st1.setName("Haoren");

Stude st2=new Stude();
st2.setId(102);
st2.setName("Huairen");

mb.setStr("Name-Hao");
mb.setSum(202);
mb.setStude(st1);

System.out.println("---------------List<Object>转换--------------------");

List<Studen> list=new ArrayList<Stude>();

list.add(st1);

list.add(st2);

JSONArray ja1=JSONArray.fromObject(name);

System.out.println(ja1.toString());

List<Studen> list2=new ArrayList<Stude>();

for(int i=0;i<ja1.size();ja1++){

JSONObject obj=(JSONObject)ja1.get(i);

Studen sdObj=(Studen)JSONObject.toBean(obj,Studen.class);

list2.add(sdObj)

}

System.out.println("---------------Bean带Object转换---------------------");
JSONObject jb=JSONObject.fromObject(mb);
System.out.println(jb.toString());

MaxBean mb2=(MaxBean)JSONObject.toBean(jb,MaxBean.class);

System.out.println(mb2.getStr()+" "+mb2.getSum()+" "+mb2.getStude().getId()+" "+mb2.getStude().getName());

System.out.println("---------------Bean带List<>转换---------------------");

Clas cls=new Clas();
cls.setZt(900);
cls.setMessager("error");
List<Stude> list=new ArrayList<Stude>();
list.add(st1); list.add(st2);
cls.setList(list);
JSONObject jb2=JSONObject.fromObject(cls);
System.out.println(jb2);
Clas cls2=(Clas)JSONObject.toBean(jb2,Clas.class);
System.out.println(cls2.getMessager()+" "+cls2.getZt());

JSONArray jb5=JSONArray.fromObject(cls2.getList());

//用数组方法

Stude[] list2=(Stude[])JSONArray.toArray(jb5,Stude.class);
for(Stude s5:list2){
System.out.println(s5.getName()+" "+s5.getId());
}

System.out.println("---------------简单数组转换---------------------");

String[] name=new String[]{"W","A"};
JSONArray jb3=JSONArray.fromObject(name);
System.out.println(jb3.toString());
String[] name2=(String[])JSONArray.toArray(jb3,String.class);
System.out.println(name2[0]+" "+name2[1]);
}