ObjectOutputStream和ObjectInputStream类的学习

ObjectOutputStream和ObjectInputStream类所读写的对象必须实现了Serializable的接口,对象中的transient和static类型的成员变量不会被读取和写入.

下面写个简单的例子:
1. SerializationTest.java文件

package cn.com;

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

public class SerializationTest {

	public static void main(String[] args) {

		Student student1 = new Student(19, "zhangsan", 25, "chemistry");
		Student student2 = new Student(20, "lisi", 23, "phsical");
		try {
			FileOutputStream fos = new FileOutputStream("student.txt");
			ObjectOutputStream os = new ObjectOutputStream(fos);

			os.writeObject(student1);
			os.writeObject(student2);
			os.close();

			FileInputStream fis = new FileInputStream("student.txt");
			ObjectInputStream is = new ObjectInputStream(fis);

			try {
				student1 = (Student) is.readObject();
				student2 = (Student) is.readObject();

				is.close();

				System.out.println("id1 = " + student1.id);
				System.out.println("name1 = " + student1.name);
				System.out.println("id2 = " + student2.id);
				System.out.println("name2 = " + student2.name);

			} catch (ClassNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

2.Student.java文件

package cn.com;

import java.io.Serializable;

public class Student implements Serializable {

	int id;

	String name;

	int age;

	String department;

	public Student(int id, String name, int age, String department) {
		this.id = id;
		this.name = name;
		this.age = age;
		this.department = department;
	}

}

评论

2 楼 sf_dream 2014-11-20  

我要是读写list、map之类的集合呢

1 楼 fanfubao 2010-10-27  

这个学习了，不错，但就是还是不太明白，呵呵