以下为list与jSONArray互相转换代码。

javaBean代码：

package com.test.json;

public class Student {

private int id;
private String name;
private String sex;
private int age;
private String[] hobby;

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 getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
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;
}
}

转换测试代码：

package com.test.json; import java.util.ArrayList; import java.util.List; import net.sf.json.JSONArray; public class TestJSONObjectList { @SuppressWarnings("unchecked") public static void main(String[] args) throws Exception { Student student1 = new Student(); student1.setId(1); student1.setName("jag"); student1.setSex("man"); student1.setAge(25); student1.setHobby(new String[]{"篮球","上网","跑步","游戏"}); Student student2 = new Student(); student2.setId(1); student2.setName("jag"); student2.setSex("man"); student2.setAge(25); student2.setHobby(new String[]{"篮球","游戏"}); List<Student> list = new ArrayList<Student>(); list.add(student1); list.add(student2); // List 转 JSONArray JSONArray jsonMessage = JSONArray.fromObject(list); //输出转换后的JSON串 System.out.println(jsonMessage.toString()); List<Student> listO = (List<Student>) JSONArray.toCollection(JSONArray.fromObject(jsonMessage),Student.class); Student student = null; for(int i = 0; i < listO.size(); i++) { student = listO.get(i); System.out.println(student.getName()); } } }