java序列化与反序列化流的操作，打印流的输出

Posted 2022-11-27 weixin_ancenhw

public class StreamFile 
    public static void main(String[] args) throws IOException, ClassNotFoundException 
      //序列化对象list集合
        method02();
        //反序列化
        method03();
    

    private static void method03() throws IOException, ClassNotFoundException 
        ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream("src\\\\003.txt"));
        Object readObject = objectInputStream.readObject();
        List<Persion> readObject1 = (List<Persion>) readObject;
        System.out.println(readObject1);
        for (Persion persion : readObject1) 
            System.out.println(persion);
        


    

    private static void method02() throws IOException
        ArrayList<Persion> arrayList = new ArrayList<>();
        arrayList.add(new Persion("ancen",26));
        arrayList.add(new Persion("huwei",23));
        arrayList.add(new Persion("huwei3",23));
        ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream("src\\\\003.txt"));
        outputStream.writeObject(arrayList);
        outputStream.close();
    

输出指定位置的打印流

public class StreamFile 
    public static void main(String[] args) throws IOException, ClassNotFoundException 

        PrintStream printStream = new PrintStream("src\\\\0034.txt");
        printStream.println("ancen");
        System.setOut(printStream);
        printStream.close();