序列化和反序列化的例子

以你之姓@ 2021-12-16 22:03 268阅读 0赞

Student类：

package com.test1;
    
    import java.io.Serializable;
    
    //创建一个JavaBean对象
    public class Student implements Serializable {
        
    //	serialVersionUID字段作用：用来固定这个版本，无论我们怎么修改，版本都是一致的，
    //	就能进行反序列化了
    	private static final long serialVersionUID = 111L;
    	private String name;
    	private int age;
    
    	public Student(String name, int age) {
        
    		super();
    		this.name = name;
    		this.age = age;
    	}
    
    	public Student() {
        
    		super();
    		// TODO Auto-generated constructor stub
    	}
    
    	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;
    	}
    
    	@Override
    	public String toString() {
        
    		// TODO Auto-generated method stub
    		return "Student[name=" + name + ",age=" + age + "]";
    	}
    
    }

测试类

package com.test1;
    
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    import java.io.OutputStream;
    
    public class Test {
        
    	public static void main(String[] args) {
        
    
    //		序列化：将对象转化为字节流
    		try {
        
    			OutputStream opOutputStream = new FileOutputStream("a.txt");
    			ObjectOutputStream opStream = new ObjectOutputStream(opOutputStream);
    			opStream.writeObject(new Student("曹操", 23));
    			opStream.close();
    		} catch (Exception e) {
        
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    
    //		反序列化
    		try {
        
    			InputStream inputStream = new FileInputStream("a.txt");
    			ObjectInputStream oStream = new ObjectInputStream(inputStream);
    			byte[] buffer = new byte[10];
    			int len = -1;
    			Student student = (Student) oStream.readObject();
    			System.out.println(student);
    			oStream.close();
    		} catch (Exception e) {
        
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    }