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- 来自专栏JAVA技术站
JAVA流之ObjectOutputStream，ObjectInputStream
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
44140发布于 2018-08-16 - 来自专栏noteless
JavaIO之ObjectInputStream 和 ObjectOutputStream
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
90210发布于 2018-09-14 - 来自专栏java大数据
java中讲讲ObjectInputStream的用法，举例？
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();
1.6K20发布于 2021-05-07 - 来自专栏bit哲学院
Java IO之对象的序列化、ObjectInputStream和ObjectOutputStream类
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)
1.4K30发布于 2021-04-25 - 来自专栏Lansonli技术博客
大数据必学Java基础（七十四）：对象流ObjectInputStream和ObjectOutputStream介绍
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
76041编辑于 2022-10-11 - 来自专栏Java进阶学习交流
ObjectInputStream类实现对象的反序列，ObjectOutputStream类实现对象的序列化流
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。
66120发布于 2021-11-19 - 来自专栏java编程那点事
java.io.IOException: unexpected exception type
(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)
48510编辑于 2023-02-25 - 来自专栏牛肉圆粉不加葱
Spark Streaming Failed to read checkpoint from directory ...现象解决方案及原因
(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)
77520发布于 2018-08-24 - 来自专栏大数据-BigData
Flink问题汇总
(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
1.2K10编辑于 2022-01-18 - 来自专栏让技术和时代并行
一次搞懂序列化和反序列化
(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)
55420发布于 2019-11-28 - 来自专栏用户2276240的专栏（5）
Java 序列化使用指南-Java快速入门教程
ObjectInputStream 和 ObjectOutputStream 都是分别扩展 java.io.InputStream 和 java.io.OutputStream 的高级类。 然后，可以使用 ObjectInputStream 读取这些流。 objectInputStream = new ObjectInputStream(fileInputStream); Person p2 = (Person) objectInputStream.readObject ObjectInputStream 选取此流并将其转换为名为 p2 的新对象。 最后，将测试加载对象的状态，并确保它与原始对象的状态匹配。 请注意，必须将加载的对象显式转换为 Person 类型。 objectInputStream = new ObjectInputStream(fileInputStream); Employee e2 = (Employee) objectInputStream.readObject
34000编辑于 2025-04-05 - 来自专栏Ray学习笔记
Serializable接口心得总结
(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)
60430发布于 2020-01-21 - 来自专栏Ray学习笔记
Serializable接口心得总结
(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)
68830发布于 2020-01-21 - 来自专栏程序员奇点
Java 序列化问题
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
70530发布于 2020-03-25 - 来自专栏全栈开发工程师
Java序列化流详解
1、简介 将文件中保存的对象以流的方式读取出来，叫读对象，也叫对象的反序列化； 2、构造方法 ObjectInputStream(InputStream in) 创建从指定 InputStream 读取的 ObjectInputStream； 参数说明： InputStream in：字节输入流； 3、特有成员方法 Object readObject()： 从ObjectInputStream读取对象 ； 4、使用步骤 ①创建ObjectInputStream对象，构造方法中传入字节输入流； ②使用ObjectInputStream中的readObject方法，读取文件中保存的对象； ③释放资源； ④ 对象，构造方法中传入字节输入流； ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream ； Object object1 = objectInputStream.readObject();//一次读一个对象 Object object2 = objectInputStream.readObject
24610编辑于 2025-01-06 - 来自专栏技术进阶之路
Design Patterns 之原型模式
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
43120发布于 2020-12-02 - 来自专栏csdn
[填坑篇]Java序列化与反序列化注意事项与细节探究
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
41510编辑于 2024-04-10 - 来自专栏无敌码农
Java对象为啥要实现Serializable接口？
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
1.3K30发布于 2019-07-30 - 来自专栏网络安全攻防
CVE-2016-3510:Weblogic反序列化
(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:
2.6K20发布于 2021-07-21 - 来自专栏红队蓝军
Java安全之Commons Collections4-7分析
inputStream=new ObjectInputStream(new FileInputStream("test.out")); inputStream.readObject() inputStream = new ObjectInputStream(new FileInputStream("test.out")); inputStream.readObject ")); objectOutputStream.writeObject(hashSet); objectOutputStream.close(); ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream("test.out")); objectInputStream.readObject objectInputStream = new ObjectInputStream(new FileInputStream("test.out")); objectInputStream.readObject
31110编辑于 2022-05-17
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