对象字节输出流

序列化对象注意事项

必须实现序列化接口

Serializable

对象字节输出流 （写入）

package ObjectOutputstreamTeast;
 
import java.io.FileOutputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
 
public class ObjectOS {
    // 目标：掌握对象字节输出流的使用 序列化对象
    public static void main(String[] args) {
 
        try ( //创建字节对象
              ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream("src/zfile1/mamat002.txt"));
              ){
            //创建对象
            OBuser u=new OBuser("admin","mamat",26,"6666888zx");
            oos.writeObject(u);
            System.out.println("序列化成功");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
}
 

package ObjectOutputstreamTeast;
 
import java.io.Serializable;
 
public class OBuser  implements Serializable {
 
 
    private String loginName;
    private String userName;
    private int age;
    private transient String password;
    //加上 transient  这个成员不参加序列化
    public OBuser() {
    }
 
    public OBuser(String loginName, String userName, int age, String password) {
        this.loginName = loginName;
        this.userName = userName;
        this.age = age;
        this.password = password;
    }
 
    public String getLoginName() {
        return loginName;
    }
 
    public void setLoginName(String loginName) {
        this.loginName = loginName;
    }
 
    public String getUserName() {
        return userName;
    }
 
    public void setUserName(String userName) {
        this.userName = userName;
    }
 
    public int getAge() {
        return age;
    }
 
    public void setAge(int age) {
        this.age = age;
    }
 
    public String getPassword() {
        return password;
    }
 
    public void setPassword(String password) {
        this.password = password;
    }
 
    @Override
    public String toString() {
        return "OBuser{" +
                "loginName='" + loginName + '\'' +
                ", userName='" + userName + '\'' +
                ", age=" + age +
                ", password='" + password + '\'' +
                '}';
    }
}

2：对象字节输入流 （读取）

读的时候不用出现密码那么 加上 transient 这个成员不参序列化

 

package ObjectOutputstreamTeast;
 
import java.io.FileInputStream;
import java.io.ObjectInputStream;
 
public class Test {
    public static void main(String[] args) {
        //创建一个对象字符输入管道，包装 低级的输入流与源文件接通
        try ( ObjectInputStream ois=  new ObjectInputStream(new FileInputStream("src/zfile1/mamat002.txt"));
        ){
            System.out.println((OBuser)(ois.readObject()));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}