JSONObject介绍与操作

JSONObject是JSON-lib提供的一个解析JSON对象的工具类，它提供了多种在Java端解析JSON数据的方法。

代码：

public class JSONObj {

public static void main(String[] args) {
/**
* 通过字符串构建JSONObject
*/
JSONObject joFromString = new JSONObject();
String str = "{\"Java\" : \"Hello Java\", \"C++\" : \"Hello C++\"}";
joFromString = joFromString.fromObject(str);
System.out.println("JSONObject------>fromObject(字符串): " + joFromString);

System.out.println("____________________________________________________");

/**
* 通过Map构建JSONObject
*/
JSONObject joFromMap = new JSONObject();
Map map = new HashMap();
map.put("张明", 22);
map.put("李强", 23);
joFromMap = joFromMap.fromObject(map);
System.out.println("JSONObject------>fromObject(Map): " + joFromMap);

System.out.println("____________________________________________________");

/**
* 通过对象构建JSONObject
*/
JSONObject joFromObject = new JSONObject();
joFromObject = joFromObject.fromObject(new Person("朱天",25));
System.out.println("JSONObject------>fromObject(对象): " + joFromObject);

System.out.println("____________________________________________________");

/**
* 通过put方法构造JSONObject
*/
JSONObject joFromPut = new JSONObject();
joFromPut.put("你", "在哪");
joFromPut.put("我", "在这");
System.out.println("JSONObject------>put(key,value): " + joFromPut);

System.out.println("____________________________________________________");

}

}

输出：



方法介绍：

put(Object key, Object value) 往JSONObject对象中添加数据

fromObject(Object object)将JSON格式字符串、Map、bean等转化为JSONObject对象