json学习初体验--使用第三方的jar包实现bean、List、map创建json格式_H5之家

| 责编：崔宁

返回首页分享到

1、需要的jar包json-lib.jar

下载地址：

此包还需要以下的依赖包，

2、创建javabean文件，以下面的为例：

<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>

3、bean/LIst/map生成json的代码：

<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生成json person_bean pb=new person_bean(); pb.setId(1); pb.setName("wang"); pb.setSex("男"); pb.setMoblie("1341234568"); JSONObject jsonobject=JSONObject.fromObject(pb); System.out.println(jsonobject.toString()); //结果 //{"id":1,"moblie":"1341234568","name":"wang","sex":"男"} //List生成json person_bean pb1=new person_bean(); pb1.setId(2); pb1.setName("wang1"); pb1.setSex("女"); pb1.setMoblie("13123323"); person_bean pb2=new person_bean(); pb2.setId(3); pb2.setName("wang3"); pb2.setSex("女"); 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()); /** * 结果如下 */ //[{"id":2,"moblie":"13123323","name":"wang1","sex":"女"},{"id":3,"moblie":"13232343673","name":"wang3","sex":"女"}] //map转换成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()); //结果： //{"3":"zhi","2":"tian","1":"hai"} } } </span>

4、运行的结果：

{"id":1,"moblie":"1341234568","name":"wang","sex":"男"}
[{"id":2,"moblie":"13123323","name":"wang1","sex":"女"},{"id":3,"moblie":"13232343673","name":"wang3","sex":"女"}]
{"3":"zhi","2":"tian","1":"hai"}