ObjectOutputStream把一个对像写入到一个流中 ObjectInputStream从一个流中,读取对像 demo如下 package com.yudian.io.stream; import...java.io.FileInputStream; import java.io.FileOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream...objectOutputStream.close(); ops.close(); FileInputStream ipt = new FileInputStream("C:\\project\\object.txt"); ObjectInputStream...objectInputStream = new ObjectInputStream(ipt); student1 = (Student) objectInputStream.readObject...(); student2 = (Student) objectInputStream.readObject(); objectInputStream.close(); ipt.close
序列化是一种轻量级的持久化,对象都是存活在内存中的,当JVM运行结束,对象便不存在了 如果想要对象还能够存在,或者说当你在网络中想要进行对象数据的传输的话,就需要进行序列化 说白了就是内存中的数据你要把他变成字节 ObjectInputStream...约定了从二进制读取基本类型 对象 数组 String的方法DataOutput以及 ObjectOutput也都是接口,约定了将基本类型数据 对象 数组 String 转换为字节写入二进制流的方法 ObjectInputStream...和 ObjectOutputStream 相当于继承了两个体系一个体系是IO的读写方法约定另一个是从二进制读取为数据或者数据编写二进制 两个体系结构的实现,构成了现在的ObjectInputStream...ObjectInputStream中的方法大多依赖于bin变量....的 它内部也有一个跟BlockDataInputStream 对应的BlockDataOutputStream 不再详细介绍 总结 ObjectInputStream 和 ObjectOutputStream
2.5 ObjectInputStream的用法 马克-to-win:ObjectInputStream顾名思义就是可以从流中读入一个用户自定义的对象。...一定要注意ObjectOutputStream与ObjectInputStream必须配合使用,且按同样的顺序。...ClassNotFoundException{ FileInputStream fis = new FileInputStream("c://data.txt"); ObjectInputStream...ois = new ObjectInputStream(fis); Employee e1 = (Employee)ois.readObject();
参考链接: Java ObjectInputStream类 什么是IO流? byte序列的读写,Java中的IO流是实现输入/输出的基础. ...我们可以使用java.io.ObjectInputStream和java.io.ObjectOutputStream类来完成这个任务。 1、什么是对象的序列化(Serialize)?...2、ObjectInputStream类 和ObjectOutputStream类 如果我们想要序列化一个对象,如我们自定义的User类的对象,那么这个对象必须实现Serializable接口。...下面我们使用ObjectInputStream类 和ObjectOutputStream类 向文件中写入3个User对象,追加1个User对象,最后再从文件中读回对象。 ...ois = new ObjectInputStream(fis); // 读取对象并放入List容器中 while(fis.available() > 0)
对象流ObjectInputStream和ObjectOutputStream介绍一、对象流用于存储和读取基本数据类型数据或对象的处理流。...-- 序列化用ObjectInputStream类 : 当其它程序获取了这种二进制数据,就可以恢复成原来的Java对象。...main(String[] args) throws IOException, ClassNotFoundException { //将文件中保存的字符串 读入到 内存: ObjectInputStream...ois = new ObjectInputStream(new FileInputStream(new File("d:\\Demo3.txt"))); //读取: String...ois = new ObjectInputStream(new FileInputStream(new File("d:\\Demo4.txt"))); //读入内存: Person
一、 ObjectInputStream类 1.ObjectInputStream是对象的反序列化流,它是InputStream类的子类。...2.ObjectInputStream类的构造方法 public ObjectInputStream(InputStream in):创建指定的输入流对象读取ObjectInputStream。...例子: FileInputStream fs=new FileInputStream("test.txt"); ObjectInputStream os=new ObjectInputStream(fs...三、总结 本文主要介绍了ObjectInputStream类、ObjectOutputStream类。...ObjectInputStream类是对象的反序列化流,它是InputStream类的子类,介绍了它的构造方法和方法,通过一个例子来学习使用ObjectInputStream类实现对象的反序列化。
(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348...(ObjectInputStream.java:1913) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java...(ObjectInputStream.java:1704) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1342...(ObjectInputStream.java:1989) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:...(ObjectInputStream.java:1348) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1704)
(ObjectInputStream.java:2078) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)...(ObjectInputStream.java:2211) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java...(ObjectInputStream.java:2287) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211...(ObjectInputStream.java:1573) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:...(ObjectInputStream.java:2069) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
(ObjectInputStream.java:1630) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1521...) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1781) at java.io.ObjectInputStream.readObject0...(ObjectInputStream.java:1353) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)...(ObjectInputStream.java:1630) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1521...(ObjectInputStream.java:1353) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)
(ObjectInputStream.java:2291) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2209...) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2067) at java.io.ObjectInputStream.readObject0...(ObjectInputStream.java:1571) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2285...) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2209) at java.io.ObjectInputStream.readOrdinaryObject...(ObjectInputStream.java:2067) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1571) at
(ObjectInputStream.java:2043) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573...) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431) at thinking.in.java.SerializableTest.read...(ObjectInputStream.java:1885) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751...) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042) at java.io.ObjectInputStream.readObject0...(ObjectInputStream.java:1573) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
objectInputStream = new ObjectInputStream(inputStream); obj = objectInputStream.readObject...objectInputStream = new ObjectInputStream(inputStream); obj = objectInputStream.readObject...objectInputStream = null; Person obj = null; // 写入 try { objectInputStream...= new ObjectInputStream(new FileInputStream(file)); obj = (Person) objectInputStream.readObject...= null) { objectInputStream.close(); } } catch (IOException
ObjectInputStream ois = new ObjectInputStream(new FileInputStream("object.txt"));...ObjectInputStream ois = new ObjectInputStream(new FileInputStream("object.txt"));...ObjectInputStream ois = new ObjectInputStream(new FileInputStream("object.txt"));...(Unknown Source) at java.io.ObjectInputStream.readClassDesc(Unknown Source) at java.io.ObjectInputStream.readOrdinaryObject...(Unknown Source) at java.io.ObjectInputStream.readObject0(Unknown Source) at java.io.ObjectInputStream.readObject
objectInputStream = new ObjectInputStream(new FileInputStream("/Users/guanliyuan/user.txt")); ...(ObjectInputStream.java:2038) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1568...(ObjectInputStream.java:) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:) ...at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:) at java.io.ObjectInputStream.readObject0...(ObjectInputStream.java:) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:) at
利用ObjectOutputStream和ObjectInputStream序列化和反序列化时一定要实现Serializable接口,否则会报NotSerializableException异常...in = new ObjectInputStream(new FileInputStream("person.txt"))) { Person readObject = (Person...(ObjectInputStream.java:1885) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751...) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042) at java.io.ObjectInputStream.readObject0...(ObjectInputStream.java:1573) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431) 加上
(ObjectInputStream.java:2348) at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java.../java.io.ObjectInputStream.readObject(ObjectInputStream.java:514) at java.base/java.io.ObjectInputStream.readObject...(ObjectInputStream.java:2060) at java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java.../java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1742) at java.base/java.io.ObjectInputStream.readObject...(ObjectInputStream.java:514) at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java
objectInputStream = new ObjectInputStream( new FileInputStream( new File("student.txt") ) )...; Student student = (Student) objectInputStream.readObject(); objectInputStream.close();...objectInputStream = new ObjectInputStream( new FileInputStream( new File("student.txt") ) )...; Student student = (Student) objectInputStream.readObject(); objectInputStream.close();...objectInputStream = new ObjectInputStream( new FileInputStream(
反序列化通过: ObjectInputStream.readObject(). 需要进行序列化的类需要实现Serializable接口, 但是不需要实现任何方法....objectFile)); objectOutputStream.writeObject(a1); objectOutputStream.close(); ObjectInputStream...objectInputStream = new ObjectInputStream(new FileInputStream(objectFile)); A a2 = (A) objectInputStream.readObject...(); objectInputStream.close(); System.out.println(a2); } }
(ObjectInputStream.java:1574) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495...(ObjectInputStream.java:1328) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java...(ObjectInputStream.java:1848) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java...(ObjectInputStream.java:1946) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java...(ObjectInputStream.java:1946) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:
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