ObjectOutputStream读取文件多个对象时报出EOFException问题

缺乏、安全感 2022-06-09 22:58 184阅读 0赞

写入Student对象到Student.txt

public class WriterStudent {
    
        public static void main(String[] args) {
            try {
                ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("Student.txt"));
                Student stu1 = new Student("徐恺",19);
                Student stu2 = new Student("路娟娟",18);
                Student stu3 = new Student("崔亚涛",20);
                oos.writeObject(stu1);
                oos.writeObject(stu2);
                oos.writeObject(stu3);
                //写入结束标志方便读取（非常重要，如果不写入，在读取的时候无法定位读取结束）；
                oos.writeObject(null);
                oos.close();
            }catch (IOException e) {
    
                e.printStackTrace();
            }
    
        }
    
    }

读取Student对象到console

public class ReaderStudent {
    
        public static void main(String[] args) {
            ObjectInputStream ois = null;
            try {
                ois = new ObjectInputStream(new FileInputStream("Student.txt"));
                try {
                    Student s = null;
                    while(true){
                        if((s = (Student)ois.readObject()) != null){
                            s.showInfo();
    
                        }else{
                            break;
                        }
                    }
                } catch (ClassNotFoundException e) {
    
                    e.printStackTrace();
                }
                ois.close();
            } catch (IOException e) {
    
                e.printStackTrace();
            }
        }
    
    }

序列化Student类

package com.lanou3g.job11;
    
    import java.io.Serializable;
    
    public class Student implements Serializable{ 
    
        private String name;
        private int age;
        public Student() {
            super();
    
        }
        public Student(String name, int age) {
            super();
            this.name = name;
            this.age = age;
        }
        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 void showInfo(){
            System.out.println("姓名:" + name + ",年龄" + age);
        }
    
    }