package com.aflfte.io;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Date;
/**
* 对象流的使用
* 1.先写入后读取
* 2.读取顺序必须与写入顺序保持一致
* 3.对象流需要序列化
* 4.不是所有的对象都可以序列化 必须实现接口Serializable
*
*
* ObjectOutputStream //对象输出流
* ObjectInputStream //对象输入流
* @author root
*
*/
public class ObjectTest {
public static void main(String[] args) throws IOException, ClassNotFoundException {
ByteArrayOutputStream baos=new ByteArrayOutputStream();
ObjectOutputStream dos=new ObjectOutputStream(new BufferedOutputStream(baos));
dos.writeUTF("编码辛酸泪");
dos.writeInt(18);
dos.writeBoolean(false);
dos.writeChar('a');
dos.writeObject("谁解其中味");
dos.writeObject(new Date());
Employee emp=new Employee("马云",400);
dos.writeObject(emp);
dos.flush();
byte[] datas=baos.toByteArray();
ObjectInputStream dis=new ObjectInputStream(new BufferedInputStream(new ByteArrayInputStream(datas)));
String str=dis.readUTF();
int in=dis.readInt();
boolean bl=dis.readBoolean();
char cha=dis.readChar();
Object ob=dis.readObject();
Object date=dis.readObject();
Object employee=dis.readObject();
System.out.println(str+"|"+in+"|"+bl+"|"+cha+"|"+ob);
if(str instanceof String) {
String strobj=(String)str;
System.out.println(strobj);
}
if(date instanceof Date) {
Date da=(Date)date;
System.out.println(da);
}
if(employee instanceof Employee) {
Employee em=(Employee)employee;
System.out.println(em.getName()+"-->"+em.getSalary());
}
}
}
class Employee implements java.io.Serializable{
private String name;
private transient double salary;//加上transient表示该数据不需要序列化
public Employee() {
super();
}
public Employee(String name, double salary) {
super();
this.name = name;
this.salary = salary;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
}
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数据流的使用»
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