1.JAR包简介

要使程序可以运行必须引入JSON-lib包，JSON-lib包同时依赖于以下的JAR包：

2.JSONObject对象使用

JSON-lib包是一个beans,collections,maps,java arrays 和XML和JSON互相转换的包。在本例中，我们将使用JSONObject类创建JSONObject对象，然后我们打印这些对象的值。为了使用 JSONObject对象，我们要引入"net.sf.json"包。为了给对象添加元素，我们要使用put()方法。

2.1.实例1

JSONObject createJSONObject() {
JSONObject jsonObject = main(String[] args) {
JSONObject jsonObject = JSONObjectSample.createJSONObject();System.out.println("jsonObject：" + jsonObject);

isArray = jsonObject.isArray();
jsonObject.element("address", "福建省厦门市");
System.out.println("添加属性后的对象：" + jsonObject);

JSONArray jsonArray = JSONArray array = jsonObject.getJSONArray("jsonArray");
System.out.println(jsonObject);


System.out.println("返回一个JSONArray对象：" + array);

String username = jsonObject.getString("username");
System.out.println("username==>" + username);

String temp = jsonObject.toString();
JSONObject object = JSONObject.fromObject(temp);
System.out.println("qq=" + object.get("QQ"));
}
}

main(String args[]){
JSONObject jsonObj0 = jsonObj0.put("name0", "zhangsan");
jsonObj0.put("sex1", "female");
System.out.println("jsonObj0:"+jsonObj0);

jsonObj.put("name", "xuwei");
jsonObj.put("sex", "male");
System.out.println("jsonObj:"+jsonObj);

jsonObj2.put("item0", jsonObj0);
jsonObj2.put("item1", jsonObj);
System.out.println("jsonObj2:"+jsonObj2);

jsonObj3.element("j3", jsonObj2);
System.out.println("jsonObj3:"+jsonObj3);

jsonArray.add(jsonObj);
System.out.println("jsonArray:"+jsonArray);

JSONObject jsonObj4 = new JSONObject();
jsonObj4.element("weather", jsonArray);
System.out.println("jsonObj4:"+jsonObj4);
}
}

输出结果：

jsonObj0:{"name0":"zhangsan","sex1":"female"}
jsonObj:{"name":"xuwei","sex":"male"}
jsonObj2:{"item0":{"name0":"zhangsan","sex1":"female"},"item1":{"name":"xuwei","sex":"male"}}
jsonObj3:{"j3":{"item0":{"name0":"zhangsan","sex1":"female"},"item1":{"name":"xuwei","sex":"male"}}}
jsonArray:[{"name":"xuwei","sex":"male"}]
jsonObj4:{"weather":[{"name":"xuwei","sex":"male"}]}

关于java bean的处理

创建java对象：

public class Address {
   private String road;
   private String streate;
   private String provience;
   private String no;
   // set get method
}

1.将json对象转化为java对象

JSONObject jsonObject = JSONObject.fromObject("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"\"}");
Address Address  = (Address) JSONObject.toBean(jsonObject,Address.class);

log.info(Address.getNo());

log.info(Address.getStreate());

log.info(Address.getProvience());
log.info(Address.getRoad());

2.将java对象转化为json对象

将java对象转化为json对象：

Address address = new Address();
address.setNo("104");
address.setProvience("陕西");
address.setRoad("高新路");
address.setStreate("");
JSONArray json = JSONArray.fromObject(address);
log.info(json.toString());

将java对象list转化为json对象：

 Address address = new Address();
 address.setNo("104");
 address.setProvience("陕西");
 address.setRoad("高新路");
 address.setStreate("");
 Address address2 = new Address();
 address2.setNo("105");
 address2.setProvience("陕西");
 address2.setRoad("未央路");
 address2.setStreate("张办");
 List list = new ArrayList();
 list.add(address);
 list.add(address2);
 JSONArray json = JSONArray.fromObject(list);
 log.info(json.toString());

3.JSONArray转化为list

JSONObject jsonObject = JSONObject.fromObject("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"\"}");
JSONArray jsonArray = new JSONArray();
jsonArray.add("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"\"}");
jsonArray.add("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"123\"}");
Object object = JSONArray.toList(jsonArray,Address.class);

本文链接：，转自：

如非特别注明，本站内容均为领悟书生原创，转载请务必注明作者和原始出处。
本文地址：