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：

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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

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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

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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