Java之使用json-lib进行对象与json字符串之间的转换

1、首先需要下载json-lib-2.4-jdk15.jar包。

下载地址：http://sourceforge.net/projects/json-lib/files/json-lib/json-lib-2.4/。也可以下载到源码

其他需要的jar:

a.commons-beanutils.jar

b.commons-collections.jar

c.commons-lang.jar

d.commons-logging.jar

e.ezmorph-1.0.6.jar

2、主要使用JSONObject进行对象与Json字符串之间的转换

方法：fromObject(object)

          把对象转换为JSONObject对象，使用toString方法就可以获取json字符串

          这个方法既可以传入对象，也可以传入json字符串

方法：toBean(JSONObject, class)

          把json字符串转为对象

示例：

 public static void main(String[] args) {
         Student student = new Student("cb", 24, "04050102");
         JSONObject object = JSONObject.fromObject(student);
         String json = object.toString();
         System.out.println(json);
         JSONObject jO = JSONObject.fromObject(object.toString());
         Object object2 = JSONObject.toBean(jO, Student.class);
         Student student2  = (Student)object2;
         System.out.println(student2.getClassName());
     }

 

Student类

 public class Student {
     private Person mPerson;
     private String mClassName;

     public Student() {

     }

     public Student(String name, int age, String className) {
         mPerson = new Person(name, age);
         mClassName = className;
     }

     public Person getPerson() {
         return mPerson;
     }

     public void setPerson(Person person) {
         mPerson = person;
     }

     public String getClassName() {
         return mClassName;
     }

     public void setClassName(String className) {
         mClassName = className;
     }
 }

 

Person类

 public class Person {
     private String mName;
     private int mAge;

     public Person() {

     }

     public Person(String name, int age) {
         mName = name;
         mAge = age;
     }

     public String getName() {
         return mName;
     }

     public void setName(String name) {
         mName = name;
     }

     public int getAge() {
         return mAge;
     }

     public void setAge(int age) {
         mAge = age;
     }
 }

 

源码下载点击打开链接