Conversion of Java objects and collections to JSON

Summarize the conversion between the Java object and the collection and JSON:

1. Create the User class:

Package Com.ghj.packageofdomain;public class User {private int id;private string Name;private string Gender;public User () {}public User (int id, string name, String gender) {this.id = Id;this.name = Name;this.gender = gender;} public int getId () {return ID;} public void setId (int id) {this.id = ID;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;} Public String Getgender () {return gender;} public void Setgender (String gender) {This.gender = gender;} @Overridepublic String toString () {return "id=" + ID + ", name=" + name + ", gender=" + Gender;}}

2. Conversion between Java objects and collections and JSON:
I, the conversion between Java objects and JSON:

Package Com.ghj.packageoftest;import Net.sf.json.jsonobject;import Com.ghj.packageofdomain.user;public class Test{ public static void Main (string[] args) {System.out.println (objecttojsonstring ()); Jsonstringtoobject ( Objecttojsonstring ());} /** * Convert Java object to JSON string *  * @author Gao Yingjie */static string objecttojsonstring () {Jsonobject jsonobject = Jsonobject.fromo Bject (New User (1, "Zhang San", "male"));    return jsonobject.tostring ();} /** * Convert JSON string to Java Object *  * @author Gao Yingjie */static void Jsonstringtoobject (String jsonstring) {Jsonobject Jsonobject = JS Onobject.fromobject (jsonstring); User user = (user) Jsonobject.tobean (jsonobject, User.class); SYSTEM.OUT.PRINTLN (user);}}

II, the conversion between the Java collection and JSON:

Conversion of Java objects and collections to JSON