Java序列化和反序列化简单实例

1.创建JavaBean类

public class People {
	
	private String name;
	private int age;
	private char sex;
	
	public People() {
		
	}

	public People(String name, int age, char sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public char getSex() {
		return sex;
	}

	public void setSex(char sex) {
		this.sex = sex;
	}
	
}

创建的规则：

私有成员变量
对成员变量操作的公共get/set方法
实现Serializable接口
一定有公有无参的构造方法

2.序列化

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;

public class Serialization {
	public static void main(String[] args) {
		// 创建一个对象指向分配的空间并赋值
		People people = new People("张三", 20, '女');
		FileOutputStream fos = null;
		ObjectOutputStream oos = null;
		try {
			fos = new FileOutputStream("F:/001.txt");
			//把对象转为二进制进行保存
			oos = new ObjectOutputStream(fos);
			//把转换后的对象保存到本地
			oos.writeObject(people);
			//清理内存
			oos.flush();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			//关流
			if (oos != null) {
				try {
					oos.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			if (fos != null) {
				try {
					fos.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
}

3.反序列

import java.io.EOFException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;

public class Deserialization {
	public static void main(String[] args) {
		FileInputStream fis = null;
		ObjectInputStream ois = null;
		try {
			fis = new FileInputStream("F:/001.txt");
			//把二级制文件转为类对象
			ois = new ObjectInputStream(fis);
			//读取二进制文件
			Object obj = ois.readObject();
			if (obj instanceof People) {
				People people = (People) obj;
				System.out.println(people);
			}
		} catch (EOFException e) {
			// TODO: handle exception
			System.out.println("已读取");
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			//关流
			if (ois != null) {
				try {
					ois.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			if (fis != null) {
				try {
					fis.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
}