JAVA JSON解析 JDK,ORG方式

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1.JSON jdk解析方式

所需要加包

json-lib-2.2.2-jdk15.jar

package com.learn.json;

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

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

public class Json_Jdk {
   //json字符串
           private static String diskListContent = "[{\"n1\":\"asd\",\"n2\":22,\"n3\":\"45.40GB\"," + "\"n4\":\"qwerty\",\"n5\":\"asd\",}," + "{\"n1\":\"local\","
                    + "\"n2\":1,\"n3\":\"279.40GB\",\"n4\":\"ST3300656SS\",\"n5\":\"\\/devm\\/d0\"}]";
       /**
       * json字符串转换成 map
       * @param rsContent
       * @return
       * @throws Exception
       */
       private static List<Map<String, String>> jsonStringToList(String rsContent) throws Exception{
           JSONArray arry = JSONArray.fromObject(rsContent);
           System.out.println("json字符串转换成 map");
           List<Map<String, String>> rsList = new ArrayList<Map<String, String>>();
           for (int i = 0; i < arry.size(); i++){
               JSONObject jsonObject = arry.getJSONObject(i);
               Map<String, String> map = new HashMap<String, String>();
               for (Iterator<?> iter = jsonObject.keys(); iter.hasNext();){
                   String key = (String) iter.next();
                   String value = jsonObject.get(key).toString();
                   map.put(key, value);
               }
               rsList.add(map);
           }
           return rsList;
       }

       public static void main(String[] args) throws Exception {
           List<Map<String, String>> list1 = jsonStringToList(diskListContent);
           System.out.println("json字符串成map");
           for (Map<String, String> m : list1){
               System.out.println(m);
           }
           System.out.println("map转换成json字符串");
           for (Map<String, String> m : list1){
               //初始化JSONArray对象，并添加数据
               JSONArray arry = JSONArray.fromObject(m);
               //JSONArray jsonArray = JSONArray.fromObject(m);
               System.out.println(arry.toString());
           }
                System.out.println("list转换成json字符串");
                JSONArray jsonArray2 = JSONArray.fromObject(list1);
                System.out.println(jsonArray2.toString());
       }
}

1.JSON ORG解析方式

org.json.jar

package com.json.learn;

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

import org.json.JSONArray;
import org.json.JSONObject;
public class Json_org {
   //json字符串
       private static String diskListContent = "[{\"n1\":\"asd\",\"n2\":22,\"n3\":\"45.40GB\"," + "\"n4\":\"qwerty\",\"n5\":\"asd\",}," + "{\"n1\":\"local\","
                + "\"n2\":1,\"n3\":\"279.40GB\",\"n4\":\"ST3300656SS\",\"n5\":\"\\/devm\\/d0\"}]";
   /**
   * json字符串转换成 map
   * @param rsContent
   * @return
   * @throws Exception
   */
   private static List<Map<String, String>> jsonStringToList(String rsContent) throws Exception{
       JSONArray arry = new JSONArray(rsContent);
       System.out.println("json字符串转换成 map");
       List<Map<String, String>> rsList = new ArrayList<Map<String, String>>();
       for (int i = 0; i < arry.length(); i++){
           JSONObject jsonObject = arry.getJSONObject(i);
           Map<String, String> map = new HashMap<String, String>();
           for (Iterator<?> iter = jsonObject.keys(); iter.hasNext();){
               String key = (String) iter.next();
               String value = jsonObject.get(key).toString();
               map.put(key, value);
           }
           rsList.add(map);
       }
       return rsList;
   }

   public static void main(String[] args) throws Exception {
       List<Map<String, String>> list1 = jsonStringToList(diskListContent);
       System.out.println("json字符串成map");
       for (Map<String, String> m : list1){
           System.out.println(m);
       }
       System.out.println("map转换成json字符串");
       for (Map<String, String> m : list1){
           //初始化JSONArray对象，并添加数据
             JSONArray array = new JSONArray();
             array.put(m);
           //JSONArray jsonArray = JSONArray.fromObject(m);
           System.out.println(array.toString());
       }
       System.out.println("list转换成json字符串");
           JSONArray array = new JSONArray();
             array.put(list1);
            //JSONArray jsonArray2 = JSONArray.fromObject(list1);
            System.out.println(array.toString());
   }
}

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