JSONObject

JSONObject_1_3

 package json;

 

 import net.sf.json.JSON;

 import net.sf.json.JSONObject;

 import net.sf.json.xml.XMLSerializer;

 

 public class JSONObject_1_3 {

 public static void javaToJSON() {

 System.out.println("java代码封装为json字符串");

 JSONObject jsonObj = new JSONObject();

 jsonObj.put("username", "张三");

 jsonObj.put("password", "123456");

 System.out.println("java--->json \n" + jsonObj.toString());

 }

 

 public static void jsonToJAVA() {

 System.out.println("json字符串转java代码");

 String jsonStr = "{\"password\":\"123456\",\"username\":\"张三\"}";

 JSONObject jsonObj = JSONObject.fromString(jsonStr);

 String username = jsonObj.getString("username");

 String password = jsonObj.optString("password");

 System.out.println("json--->java\n username=" + username

 + "\t password=" + password);

 }

 

 public static void jsonToXML() {

 System.out.println("json字符串转xml字符串");

 String jsonStr = "{\"password\":\"123456\",\"username\":\"张三\"}";

 JSONObject json = JSONObject.fromString(jsonStr);

 XMLSerializer xmlSerializer = new XMLSerializer();

 xmlSerializer.setRootName("user_info");

 xmlSerializer.setTypeHintsEnabled(false);

 String xml = xmlSerializer.write(json);

 System.out.println("json--->xml \n" + xml);

 }

 

 public static void javaBeanToJSON() {

 System.out.println("javabean转json字符串");

 UserInfo userInfo = new UserInfo();

 userInfo.setUsername("张三");

 userInfo.setPassword("123456");

 JSONObject json = JSONObject.fromBean(userInfo);

 System.out.println("javabean--->json \n" + json.toString());

 }

 

 public static void javaBeanToXML() {

 System.out.println("javabean转xml字符串");

 UserInfo userInfo = new UserInfo();

 userInfo.setUsername("张三");

 userInfo.setPassword("123456");

 JSONObject json = JSONObject.fromBean(userInfo);

 XMLSerializer xmlSerializer = new XMLSerializer();

 String xml = xmlSerializer.write(json, "UTF-8");

 System.out.println("javabean--->xml \n" + xml);

 }

 

 public static void xmlToJSON(){

 System.out.println("xml字符串转json字符串");

 String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><user_info><password>123456</password><username>张三</username></user_info>";

 JSON json=XMLSerializer.read(xml);

 System.out.println("xml--->json \n"+json.toString());

 }

 

 public static void main(String args[]) {

 // javaToJSON();

 // jsonToJAVA();

 // jsonToXML();

 // javaBeanToJSON();

 // javaBeanToXML();

 xmlToJSON();

 }

 }

json.jarjson_new.jar