Java序列化与反序列化

public class Person implements Serializable{
private String name;
private int age;
public Person(){

}
public Person(String str, int n){
System.out.println("Inside Person's Constructor");
name = str;
age = n;
}
String getName(){
return name;
}
int getAge(){
return age;
}
}

//序列化、反序列化为一般的文件，SerializeToFlatFile.java类的代码如下：
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class SerializeToFlatFile {
public static void main(String[] args) {
SerializeToFlatFile ser = new SerializeToFlatFile();
ser.savePerson();
ser.restorePerson();
}

public void savePerson(){
Person myPerson = new Person("Jay",24);
try {
FileOutputStream fos = new FileOutputStream("E:\\workspace\\2010_03\\src\\myPerson.txt");
ObjectOutputStream oos = new ObjectOutputStream(fos);
System.out.println("Person--Jay,24---Written");
System.out.println("Name is: "+myPerson.getName());
System.out.println("Age is: "+myPerson.getAge());

oos.writeObject(myPerson);
oos.flush();
oos.close();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}

public void restorePerson() {
try {
FileInputStream fis = new FileInputStream("E:\\workspace\\2010_03\\src\\myPerson.txt");
ObjectInputStream ois = new ObjectInputStream(fis);

Person myPerson = (Person)ois.readObject();
System.out.println("\n--------------------\n");
System.out.println("Person--Jay,24---Restored");
System.out.println("Name is: "+myPerson.getName());
System.out.println("Age is: "+myPerson.getAge());
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
运行结果为（console输出），当然可以查看到myPerson.txt文件已经生成：
Inside Person's Constructor
Person--Jay,24---Written
Name is: Jay
Age is: 24

--------------------

Person--Jay,24---Restored
Name is: Jay
Age is: 24

序列化、反序列化为XML文件，我使用了XStream来序列化，需要引入xstream-1.3.1.jar包的支持， http://xstream.codehaus.org/download.html  处可以下载jar，然后引入到Eclipse中的build path中。
Serialize.java的代码如下：
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import com.thoughtworks.xstream.*;

public class Serialize {
public static void main(String[] args) {
Serialize ser = new Serialize();
ser.serializeToXml();
ser.deSerializeFromXml();
}

public void serializeToXml(){
Person[] myPerson = new Person[2];
myPerson[0] = new Person("Jay",24);
myPerson[1] = new Person("Tom",23);

XStream xstream = new XStream();
try {
FileOutputStream fos = new FileOutputStream("E:\\workspace\\2010_03\\src\\myPerson.xml");
xstream.toXML(myPerson,fos);
} catch (FileNotFoundException ex) {
ex.printStackTrace();
}
System.out.println(xstream.toXML(myPerson));
}
public void deSerializeFromXml(){
XStream xs = new XStream();
Person[] myPerson = null;

try {
FileInputStream fis = new FileInputStream("E:\\workspace\\2010_03\\src\\myPerson.xml");
myPerson=(Person[])xs.fromXML(fis);
if (myPerson != null)
{
int len = myPerson.length;
for (int i=0;i<len;i++)
{
System.out.println(myPerson[i].getName());
System.out.println(myPerson[i].getAge());
}

}
} catch (FileNotFoundException ex) {
ex.printStackTrace();
}
}
}
运行结果为（console输出），当然可以查看到myPerson.xml文件已经生成：
Inside Person's Constructor
Inside Person's Constructor
<Person-array>
<Person>
<name>Jay</name>
<age>24</age>
</Person>
<Person>
<name>Tom</name>
<age>23</age>
</Person>
</Person-array>
Jay
24
Tom
23