要序列化的了类需要实现Serializable接口
package com.mouday; import java.io.Serializable; public class Person implements Serializable { // 序列化前后的唯一标识符 private static final long serialVersionUID = 1; private String name; private int age; private int score; public void setName(String name) { this.name = name; } public void setAge(int age) { this.age = age; } @Override public String toString() { return "Person{" + "name='" + name + '\'' + ", age=" + age + ", score=" + score + '}'; } }
序列化和反序列化
import com.mouday.Person;
import org.junit.Test;import java.io.*;
public class TestDemo {
@Test
public void serialize() throws IOException {
Person person = new Person();
person.setAge(23);
person.setName("Tom");
ObjectOutputStream objectOutputStream = new ObjectOutputStream(
new FileOutputStream(
new File("person.txt")
)
);
objectOutputStream.writeObject(person);
objectOutputStream.close();
}
@Test
public void deserialize() throws IOException, ClassNotFoundException {
ObjectInputStream objectInputStream = new ObjectInputStream(
new FileInputStream(
new File("person.txt")
)
);
Person person = (Person)objectInputStream.readObject();
objectInputStream.close();
System.out.println(person);
// Person{name='Tom', age=23}
}
}
参考
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