java反序列化，举一个例子

Java反序列化是将二进制数据流转换为Java对象。以下是一个简单的Java反序列化例子：

假设我们有以下Java类：

import java.io.Serializable;

public class Person implements Serializable {
    private static final long serialVersionUID = 1L;

    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }
}

我们可以将一个Person对象序列化为一个字节数组：

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;

public class SerializationExample {
    public static void main(String[] args) throws IOException {
        Person person = new Person("Alice", 25);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);
        oos.writeObject(person);
        byte[] data = baos.toByteArray();
        System.out.println("Serialized data: " + data);
    }
}

现在我们可以将字节数组反序列化为一个Person对象：

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;

public class DeserializationExample {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        byte[] data = { -84, -19, 0, 5, 115, 114, 0, 22, 80, 101, 114, 115, 111, 110, 6, 0, 0, 0, 0, 0, 0, 0, 1, 0, 3, 97, 103, 101, -126, -14, -12, 86, 1, 0, 4, 110, 97, 109, 101, 116, 0, 5, 65, 108, 105, 99, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        ByteArrayInputStream bais = new ByteArrayInputStream(data);
        ObjectInputStream ois = new ObjectInputStream(bais);
        Person person = (Person) ois.readObject();
        System.out.println("Deserialized Person: " + person.getName() + ", " + person.getAge());
    }
}

这个例子中，我们将Person对象序列化为字节数组，然后将字节数组反序列化为一个新的Person对象。