First experience of JSON learning - the third-party jar package realizes bean, list and map to create JSON format

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1、 The need for jar The parcel json-lib.jar

Download link ：

http://sourceforge.net/projects/json-lib/files/json-lib/

This package also requires the following dependent packages ,

commons-lang.jar

commons-beanutils .jar

commons-collections.jar

commons-logging.jar

ezmorph.jar

2、 establish javabean file , Take the following as an example ：

<span style="font-size:18px;">package com.gdhdcy.whp;

public class person_bean {
	public int id;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public String getMoblie() {
		return moblie;
	}
	public void setMoblie(String moblie) {
		this.moblie = moblie;
	}
	public String name;
	public String sex;
	public String moblie;
	
}
</span>

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3、bean/LIst/map Generate json Code for ：

<span style="font-size:18px;">package com.gdhdcy.whp;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class json_create {
	public static void main(String args[]){
		
		//javabean Generate json
		person_bean pb=new person_bean();
		pb.setId(1);
		pb.setName("wang");
		pb.setSex(" male ");
		pb.setMoblie("1341234568");
		JSONObject jsonobject=JSONObject.fromObject(pb);
		System.out.println(jsonobject.toString());
		// result 
		//{"id":1,"moblie":"1341234568","name":"wang","sex":" male "}
		
		//List Generate json
		person_bean pb1=new person_bean();
		pb1.setId(2);
		pb1.setName("wang1");
		pb1.setSex(" Woman ");
		pb1.setMoblie("13123323");
		
		person_bean pb2=new person_bean();
		pb2.setId(3);
		pb2.setName("wang3");
		pb2.setSex(" Woman ");
		pb2.setMoblie("13232343673");
		
		List<Object> list=new ArrayList<Object>();
		list.add(pb1);
		list.add(pb2);
		
		JSONArray jsonarray=JSONArray.fromObject(list);
		System.out.println(jsonarray.toString());
		/**
		 *  The results are as follows 
		 */
		//[{"id":2,"moblie":"13123323","name":"wang1","sex":" Woman "},{"id":3,"moblie":"13232343673","name":"wang3","sex":" Woman "}]

		
		//map convert to json
		HashMap<String, String> map=new HashMap<String, String>();
		map.put("1", "hai");
		map.put("2", "tian");
		map.put("3", "zhi");
		JSONObject jsonobject1=JSONObject.fromObject(map);
		System.out.println(jsonobject1.toString());
		// result ：
		//{"3":"zhi","2":"tian","1":"hai"}

	}
}
</span>

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4、 Results of execution ：

{“id”:1,”moblie”:”1341234568″,”name”:”wang”,”sex”:” male ”} [{“id”:2,”moblie”:”13123323″,”name”:”wang1″,”sex”:” Woman ”},{“id”:3,”moblie”:”13232343673″,”name”:”wang3″,”sex”:” Woman ”}] {“3″:”zhi”,”2″:”tian”,”1″:”hai”}

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