転載:JSOnObjectの使い方

1 public static void jsonToJAVA() {
2 System.out.println("json    java  ");
3 String jsonStr = "{\"password\":\"123456\",\"username\":\"  \"}";
4 JSONObject jsonObj = JSONObject.fromString(jsonStr);
5 String username = jsonObj.getString("username");
6 String password = jsonObj.optString("password");
7 System.out.println("json--->java
 username=" + username
8 + "\t password=" + password);
9 }

1 public static void javaToJSON() {
2 System.out.println("java     json   ");
3 JSONObject jsonObj = new JSONObject();
4 jsonObj.put("username", "  ");
5 jsonObj.put("password", "123456");
6 System.out.println("java--->json 
" + jsonObj.toString());
7 }

 1 public static void jsonToXML() {
 2 System.out.println("json    xml   ");
 3 String jsonStr = "{\"password\":\"123456\",\"username\":\"  \"}";
 4 JSONObject json = JSONObject.fromString(jsonStr);
 5 XMLSerializer xmlSerializer = new XMLSerializer();
 6 xmlSerializer.setRootName("user_info");
 7 xmlSerializer.setTypeHintsEnabled(false);
 8 String xml = xmlSerializer.write(json);
 9 System.out.println("json--->xml 
" + xml);
10 }

1 public static void xmlToJSON(){
2 System.out.println("xml    json   ");
3 String xml = "123456  ";
4 JSON json=XMLSerializer.read(xml);
5 System.out.println("xml--->json 
"+json.toString());
6 }

1 public static void javaBeanToJSON() {
2 System.out.println("javabean json   ");
3 UserInfo userInfo = new UserInfo();
4 userInfo.setUsername("  ");
5 userInfo.setPassword("123456");
6 JSONObject json = JSONObject.fromBean(userInfo);
7 System.out.println("javabean--->json 
" + json.toString());
8 }

 1 public static void javaBeanToXML() {
 2 System.out.println("javabean xml   ");
 3 UserInfo userInfo = new UserInfo();
 4 userInfo.setUsername("  ");
 5 userInfo.setPassword("123456");
 6 JSONObject json = JSONObject.fromBean(userInfo);
 7 XMLSerializer xmlSerializer = new XMLSerializer();
 8 String xml = xmlSerializer.write(json, "UTF-8");
 9 System.out.println("javabean--->xml 
" + xml);
10 }

 1 package json;
 2 
 3 import net.sf.json.JSON;
 4 import net.sf.json.JSONObject;
 5 import net.sf.json.xml.XMLSerializer;
 6 
 7 public class JSONObject_1_3 {
 8 public static void javaToJSON() {
 9 System.out.println("java     json   ");
10 JSONObject jsonObj = new JSONObject();
11 jsonObj.put("username", "  ");
12 jsonObj.put("password", "123456");
13 System.out.println("java--->json 
" + jsonObj.toString());
14 }
15 
16 public static void jsonToJAVA() {
17 System.out.println("json    java  ");
18 String jsonStr = "{\"password\":\"123456\",\"username\":\"  \"}";
19 JSONObject jsonObj = JSONObject.fromString(jsonStr);
20 String username = jsonObj.getString("username");
21 String password = jsonObj.optString("password");
22 System.out.println("json--->java
 username=" + username
23 + "\t password=" + password);
24 }
25 
26 public static void jsonToXML() {
27 System.out.println("json    xml   ");
28 String jsonStr = "{\"password\":\"123456\",\"username\":\"  \"}";
29 JSONObject json = JSONObject.fromString(jsonStr);
30 XMLSerializer xmlSerializer = new XMLSerializer();
31 xmlSerializer.setRootName("user_info");
32 xmlSerializer.setTypeHintsEnabled(false);
33 String xml = xmlSerializer.write(json);
34 System.out.println("json--->xml 
" + xml);
35 }
36 
37 public static void javaBeanToJSON() {
38 System.out.println("javabean json   ");
39 UserInfo userInfo = new UserInfo();
40 userInfo.setUsername("  ");
41 userInfo.setPassword("123456");
42 JSONObject json = JSONObject.fromBean(userInfo);
43 System.out.println("javabean--->json 
" + json.toString());
44 }
45 
46 public static void javaBeanToXML() {
47 System.out.println("javabean xml   ");
48 UserInfo userInfo = new UserInfo();
49 userInfo.setUsername("  ");
50 userInfo.setPassword("123456");
51 JSONObject json = JSONObject.fromBean(userInfo);
52 XMLSerializer xmlSerializer = new XMLSerializer();
53 String xml = xmlSerializer.write(json, "UTF-8");
54 System.out.println("javabean--->xml 
" + xml);
55 }
56 
57 public static void xmlToJSON(){
58 System.out.println("xml    json   ");
59 String xml = "123456  ";
60 JSON json=XMLSerializer.read(xml);
61 System.out.println("xml--->json 
"+json.toString());
62 }
63 
64 public static void main(String args[]) {
65 // javaToJSON();
66 // jsonToJAVA();
67 // jsonToXML();
68 // javaBeanToJSON();
69 // javaBeanToXML();
70 xmlToJSON();
71 }
72 }

 1 package json;
 2 
 3 public class UserInfo {
 4 public String username;
 5 public String password;
 6 public String getUsername() {
 7 return username;
 8 }
 9 public void setUsername(String username) {
10 this.username = username;
11 }
12 public String getPassword() {
13 return password;
14 }
15 public void setPassword(String password) {
16 this.password = password;
17 }
18 
19 }