jar包的下载到mvn里面去下载好了http://mvnrepository.com/artifact/org.json/json/20170516@H_404_2@
直接上代码分析代码最好不过了?自己拿去运行分析一下就是你自己的东西了。@H_404_2@
@H_404_2@
import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; /** * 重点:JSONObject对应集合Map,JSONArray对应集合List. * 用json类(fastjson和orgjson)库处理复杂的集合时,要将集合直接放到value处,不能将其转换为json字符串放到value处,* 如果将其转换为字符串放到value处,最终生成的json字符串会带有转义字符. */ public class OrgjsonUtil { public static void main(String[] args) { try { //JSONObject的用法. System.out.println("-----test1-----"); testJsonObject(); //JSONArray的用法. System.out.println("-----test2-----"); testJsonArray(); //JSONObject,JSONArray和集合的复杂用法. System.out.println("-----test3-----"); testComplex(); //JSONObject,JSONArray和集合的复杂用法. System.out.println("-----test4-----"); testComplex2(); } catch (Exception e) { System.out.println("测试发生异常: " + e); } } public static void testJsonObject() throws JSONException { JSONObject jo = new JSONObject(); jo.put("username","IluckySi"); jo.put("age",27); jo.put("sex",true); Map<String,String> skill = new HashMap<String,String>(); skill.put("java","不错"); skill.put("javascript","凑合"); skill.put("jquery","挺好"); jo.put("skill",skill); String username = jo.getString("username"); int age = jo.getInt("age"); boolean sex = jo.getBoolean("sex"); JSONObject skill2 = new JSONObject(jo.getJSONObject("skill").toString()); System.out.println(skill2); System.out.println(username + ",年龄 = " + age + ",性别 = " + (sex == true ? "男" : "女") + ",技能如下:"); /*Map<String,Object> names = new HashMap<String,Object>(); names = jo.getJSONObject("skill").toMap(); for (String key : names.keySet()) { String value = names.get(key).toString(); System.out.println("Key = " + key + ",Value = " + value); } */ String[] names = JSONObject.getNames(skill2); for(String name : names) { System.out.println(name + ": " + skill2.getString(name)); } } public static void testJsonArray() throws JSONException { JSONArray ja = new JSONArray(); JSONObject jo = new JSONObject(); jo.put("username",true); ja.put(jo); JSONObject jo2 = new JSONObject(); jo2.put("username","IluckySi2"); jo2.put("age",28); jo2.put("sex",false); ja.put(jo2); for(int i = 0; i < ja.length(); i++) { JSONObject j = (JSONObject)ja.get(i); String username = j.getString("username"); int age = j.getInt("age"); boolean sex = j.getBoolean("sex"); System.out.println(username + ",性别 = " + (sex == true ? "男" : "女")); } } public static void testComplex() throws JSONException { JSONObject jo = new JSONObject(); jo.put("result","success"); List<Map<Object,Object>> list = new ArrayList<Map<Object,Object>>(); Map<Object,Object> user1 = new HashMap<Object,Object>(); user1.put("name","name1"); user1.put("password","password1"); list.add(user1); Map<Object,Object> user2 = new HashMap<Object,Object>(); user2.put("name","name2"); user2.put("password","password2"); list.add(user2); jo.put("message",list); String send = jo.toString(); System.out.println("要测试的消息" + send); send(send); } private static void send(String send) throws JSONException { JSONObject jo = new JSONObject(send); String result = jo.getString("result"); System.out.println("result=" + result); System.out.println(jo.getJSONArray("message")); JSONArray ja = jo.getJSONArray("message"); for(int i = 0; i < ja.length(); i++) { JSONObject j = (JSONObject)ja.get(i); String name = j.getString("name"); String password = j.getString("password"); System.out.println("name = " + name + ",password = " + password); } } public static void testComplex2() throws JSONException { JSONObject jo = new JSONObject(); jo.put("result","success"); JSONObject message = new JSONObject(); List<Map<Object,"password2"); list.add(user2); message.put("message",list); jo.put("message",message.toString());//注意:如果直接写message,也不会有转义字符. String send = jo.toString(); System.out.println("要测试的消息" + send); send2(send); } private static void send2(String send) throws JSONException { JSONObject jo = new JSONObject(send); String result = jo.getString("result"); System.out.println("result=" + result); System.out.println(jo.getString("message").toString()); JSONObject message = new JSONObject(jo.getString("message")); JSONArray message2 = message.getJSONArray("message"); for(int i = 0; i < message2.length(); i++) { JSONObject j = (JSONObject)message2.get(i); String name = j.getString("name"); String password = j.getString("password"); System.out.println("name = " + name + ",password = " + password); } } }