JSONObject

依赖的jar包

package nettest.json;

public class Grade {

    private Student student;
    
    private String num;

    public Student getStudent() {
        return student;
    }
    public void setStudent(Student student) {
        this.student = student;
    }
    public String getNum() {
        return num;
    }
    public void setNum(String num) {
        this.num = num;
    }
    
}

package nettest.json;

public class Student {

    private String name;
    private int age;
    private String[] hobby;
    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String[] getHobby() {
        return hobby;
    }
    public void setHobby(String[] hobby) {
        this.hobby = hobby;
    }
}

package nettest.json;

import java.util.HashMap;
import java.util.Map;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class JsonTestOne {

    public static void main(String[] args) {
        
        //JSONObject对象和Java对象的互相转换
        toJsonJsonConfig();
        
        toJson();
        
        toJsonMap();
    }

    public static JSONObject common(){
        Grade newGrade = new Grade();
        newGrade.setNum("One");
        Student newStudent = new Student();
        newStudent.setAge(2);
        newStudent.setName("Ziv");
        newStudent.setHobby(new String[]{"篮球","足球"}); 
        newGrade.setStudent(newStudent);
        JSONObject js =  JSONObject.fromObject(newGrade);
        System.out.println(js.toString());
        return js;
    }
    
    
    
    public static void toJsonJsonConfig(){
        JSONObject js = common();
        Object ob =  js.toBean(js);
    }
    
    public static void toJson(){
        JSONObject js = common();
        Grade g =  (Grade) js.toBean(js, Grade.class);
        System.out.println(g.getStudent().getName());
        
        
        JSONObject map =  (JSONObject) js.get("student");
        JSONArray hobby =  map.getJSONArray("hobby"); 
        Student  st = (Student) js.toBean(map, Student.class);
        System.out.println(st.getAge());
        
        
//        JSONObject jsonObject =  JSONObject.fromObject("{"num":"One","student":{"name":"Ziv","age":2,"hobby":["篮球","足球"]}}");
    }
    
    public static void toJsonMap(){
        JSONObject js = common();
        Map conMap = new HashMap();
        conMap.put("stu", Student.class);
        conMap.put("gra", Grade.class);
        
        Student  st = (Student)JSONObject.toBean(js, Student.class, conMap);
        
    }
    
}