JSON简单应用

JSON的一些简单应用

package com.webskey.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class TestJSON {
public static void testJson(){
String key = “{\”测试\”:\”value\”}”;
JSONObject kk = JSONObject.fromObject(key);
System.out.println(kk.toString());

}public static void listJson(){    List<String> jsonList = new ArrayList<String>();    jsonList.add("globleFuck");    jsonList.add("Ducker");    jsonList.add("troubleMaker");    // List转换JSONArray    JSONArray listArr = JSONArray.fromObject(jsonList);    System.out.println(listArr.toString());    String listTest = "{\"keyf\":\"object\",\"key\":" + listArr +"}";    JSONObject listJson = JSONObject.fromObject(listTest);    System.out.println(listJson.toString());    // JSONObject读取 字符串    String jsonSingle = listJson.getString("keyf");    System.out.println(jsonSingle);    // JSONObject读取JSONArray()    JSONArray readListJson = listJson.getJSONArray("key");    System.out.println(readListJson.toString());    // map转换为JSONObject    Map<String,String> jsonMap = new HashMap<String,String>();    jsonMap.put("1", "key1");    jsonMap.put("2", "key2");    jsonMap.put("3", "key3");    JSONObject mapJson = JSONObject.fromObject(jsonMap);    System.out.println(mapJson); // {"3":"key3","2":"key2","1":"key1"}    // 读取mapJson    String mapStr = mapJson.getString("1");    System.out.println(mapStr);    JSONArray arrTest = new JSONArray();    arrTest.add(jsonMap);    JSONArray arrMap = JSONArray.fromObject(arrTest);    System.out.println(arrMap); //JSONArray格式： [{"3":"key3","2":"key2","1":"key1"}]    Map<String,String> jsonMapS = new HashMap<String,String>();    jsonMapS.put("4", "key1");    jsonMapS.put("5", "key2");    jsonMapS.put("6", "key3");    arrTest.add(jsonMapS);    JSONArray arrMap2 = JSONArray.fromObject(arrTest);    System.out.println(arrMap2); // [{"3":"key3","2":"key2","1":"key1"},{"6":"key3","5":"key2","4":"key1"}]    JSONObject arrValue = arrMap2.getJSONObject(0);    System.out.println(arrValue); // {"3":"key3","2":"key2","1":"key1"}    // 实体类的操作基本一致}public static void main(String[] args) {

// testJson();
listJson();
}
}

运行结果截图：

有啥好的JSON方面知识，尽请留言交流~