Conversion between a Java object and a JSON object

Jar Package:import net.sf.json.JSONObject;

1. Parsing JSON strings

Convert the JSON string to a JSON object, and then parse the JSON object:.
Jsonobjectjsonobject = Jsonobject.fromobject (JSONSTR);
Gets its value based on the key in the JSON
Stringname = jsonobject.getstring ("name");
int age = Jsonobject.getint ("Age");

2. Converting a JSON string to a Java object
The JSON string is also converted to a JSON object before the JSON object is converted to a Java object, as shown below.
Jsonobjectobj = new Jsonobject (). Fromobject (JSONSTR);//Convert a JSON string to a JSON object
To convert a JSON object to a Java object
PERSONJB = (person) jsonobject.tobean (obj,person.class);//convert built JSON object to person object

3. Converting a Java object to a JSON string
Converts a Java object to a JSON object before converting a JSON object to a JSON string
Jsonobjectjson = Jsonobject.fromobject (obj);//Convert Java object to JSON object
Stringstr = Json.tostring ();//Convert a JSON object to a string

Instance code:

2. Package Test3;
6. Public class Person {
10. private int age;
12. public int getage () {
14. return age;
16. }
18. public void Setage (int.) {
20. this.age = age;
22. }
24. Public String GetName () {
26. return name;
28. }
30. public void SetName (String name) {
32. this.name = name;
34. }
36. private String name;
38. Public String toString () {
40. return "person [age=" + Age + ", name=" + name + "]";
42. }
44. Public person (int age, String name) {
46. super ();
48. this.age = age;
50. this.name = name;
52. }
56. Public person (String personstr) {
60. }
64. Public Person () {
68. }
70. }

2. Package Test3;
4. Import Net.sf.json.JSONObject;
10. Public class Jsontoobject {
14. /** 
16. * @param args
18. */
20. public Void Test () {
24. System.out.println ("Convert Object object, string to JSON object");
28. Person person = New Person (1, "CGF");
32. Jsonobject json = jsonobject.fromobject (person);
36. SYSTEM.OUT.PRINTLN (JSON);
40. System.out.println ("Turn the string into a JSON object and then to a custom object");
44. String jsonstring = "{" + "age" + ": 1" + " ," + "name" + ":" + " ' wbj '" + "}";
48. Jsonobject jsonobject = Jsonobject.fromobject (jsonstring);
52. System.out.println (Jsonobject);
56. Person Person1 = (person) jsonobject.tobean (jsonobject, person.   Class);
60. System.out.println ("Name:" +person1.getage () + "Age:" + person1.getname ());
64. System.out.println ("Convert Java object to JSON string");
68. Jsonobject Json1 = jsonobject.fromobject (person);
72. String jsonString1 = json1.tostring ();
76. System.out.println (JSONSTRING1);
80. }
84. public static void Main (string[] args) {
86. //TODO auto-generated method stub
90. Jsontoobject JSON = new Jsontoobject ();
94. Json.test ();
98. }
102. }

Conversion between a Java object and a JSON object