blocks|key|1435222|text|序列化是将内存中的“活动”对象转换为可以存储在某个地方的格式(例如。在内存中，在磁盘上)，然后“反序列化”回一个活动的对象。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1435223|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Serialization is taking a "live" object in memory and converting it to a format that can be stored somewhere (eg. in memory, on disk) and later "deserialized" back into a live object.

blocks|key|1649879|text|序列化是将对象的状态转换为位以便可以将其存储在硬盘驱动器上的过程。当您反序列化同一对象时，它将在以后保持其状态。它允许您重新创建对象，而不必手动保存对象的属性。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1649880|http://en.wikipedia.org/wiki/Serialization|offset|length|1649881|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|16|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Serialization is the process of converting an object's state to bits so that it can be stored on a hard drive. When you deserialize the same object, it will retain its state later. It lets you recreate objects without having to save the objects' properties by hand.

<a href="http://en.wikipedia.org/wiki/Serialization" rel="noreferrer">http://en.wikipedia.org/wiki/Serialization</a>

blocks|key|1435314|text|序列化是将对象转换为一系列字节，以便可以轻松地将对象保存到永久存储或通过通信链路进行流式传输。然后，字节流可以被反序列化-转换为原始对象的副本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1435315|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Serialization is the conversion of an object to a series of bytes, so that the object can be easily saved to persistent storage or streamed across a communication link. The byte stream can then be deserialized - converted into a replica of the original object.

blocks|key|1435362|text|序列化是将Java对象转换为字节数组，然后再转换回保留状态的对象的过程。对于通过网络发送对象或将内容缓存到磁盘之类的各种事情都很有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1435363|从this+short+article+which+explains+programming+part+of+the+process+quite+well阅读更多内容，然后转到Serializable+javadoc。您可能还会对阅读this+related+question感兴趣。|offset|length|1435364|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/developer/technicalArticles/Programming/serialization/|1|http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html|2|https://stackoverflow.com/questions/352117/how-does-javas-serialization-work-and-when-it-should-be-used-instead-of-some-oth^0|0|1|24|0|2G|K|1|39|L|2|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]|$D|W|E|X|1|Y]|$D|Z|E|10|1|11]]|A|$]]|$1|F|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]|P|$5|I|J|K|A|$L|Q]]]]

Serialization is the process of turning a Java object into byte array and then back into object again with its preserved state. Useful for various things like sending objects over network or caching things to disk.

Read more from <a href="http://java.sun.com/developer/technicalArticles/Programming/serialization/" rel="nofollow noreferrer">this short article which explains programming part of the process quite well</a> and then move over to to <a href="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html" rel="nofollow noreferrer">Serializable javadoc</a>. You may also be interested in reading <a href="https://stackoverflow.com/questions/352117/how-does-javas-serialization-work-and-when-it-should-be-used-instead-of-some-oth">this related question</a>.

blocks|key|1650002|text|序列化意味着在java中持久化对象。如果您希望保存对象的状态，并希望稍后重新构建状态(可能在另一个JVM中)，则可以使用序列化。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1650003|请注意，对象的属性只会被保存。如果你想再次复活对象，你应该有类文件，因为只会存储成员变量，而不会存储成员函数。|1650004|例如：|1650005|ObjectInputStream+oos+=+new+ObjectInputStream(+++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++new+FileInputStream(++new+File("o.ser"))+)+;
SerializationSample+SS+=+(SearializationSample)+oos.readObject();|code-block|syntax|javascript|1650006|Searializable是一个标记接口，它标记你的类是可序列化的。标记接口意味着它只是一个空接口，使用该接口将通知JVM该类可以序列化。|1650007|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|R|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Serialization means persisting objects in java. If you want to save the state of the object and want to rebuild the state later (may be in another JVM) serialization can be used.

Note that the properties of an object is only going to be saved. If you want to resurrect the object again you should have the class file, because the member variables only will be stored and not the member functions.

eg: 

<pre><code>ObjectInputStream oos = new ObjectInputStream( 
 new FileInputStream( new File("o.ser")) ) ;
SerializationSample SS = (SearializationSample) oos.readObject();
</code></pre>

The Searializable is a marker interface which marks that your class is serializable. Marker interface means that it is just an empty interface and using that interface will notify the JVM that this class can be made serializable.

blocks|key|1435449|text|我喜欢@OscarRyz呈现的方式。虽然我在这里继续story+of+serialization，它最初是由@amitgupta编写的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1435450|即使知道了机器人的类结构，并且有序列化的数据，地球的科学家也不能反序列化可以使机器人工作的数据。|1435451|Exception+in+thread+"main"+java.io.InvalidClassException:
SerializeMe;+local+class+incompatible:+stream+classdesc
:|code-block|syntax|javascript|1435452|火星的科学家们一直在等待全额付款。一旦付款完成，火星的科学家就与地球的科学家分享了serialversionUID。地球科学家将其设置为机器人类，一切都变得很好。|1435453|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/2475448/need-of-serialization-in-java/6321929#6321929|1|http://www.javablogging.com/what-is-serialversionuid/^0|Q|M|0|0|0|0|15|G|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]|U|$5|P|Q|R|C|$S|V]]]]

I liked the way @OscarRyz presents. Although here i am continuing the <a href="https://stackoverflow.com/questions/2475448/need-of-serialization-in-java/6321929#6321929">story of serialization</a> which was originally written by @amitgupta.

Even though knowing about the robot class structure and having serialized data Earth's scientist were not able to deserialize the data which can make robots working.

<pre><code>Exception in thread "main" java.io.InvalidClassException:
SerializeMe; local class incompatible: stream classdesc
:
</code></pre>

Mars's scientists were waiting for the complete payment. Once the payment was done Mars's scientists shared the <a href="http://www.javablogging.com/what-is-serialversionuid/" rel="nofollow noreferrer">serialversionUID</a> with Earth's scientists. Earth's scientist set it to robot class and everything became fine.

blocks|key|1435474|text|将文件作为对象返回：http://www.tutorialspoint.com/java/java_serialization.htm|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1435475|++++++++import+java.io.*;

++++++++public+class+SerializeDemo
++++++++{
+++++++++++public+static+void+main(String+[]+args)
+++++++++++{
++++++++++++++Employee+e+=+new+Employee();
++++++++++++++e.name+=+"Reyan+Ali";
++++++++++++++e.address+=+"Phokka+Kuan,+Ambehta+Peer";
++++++++++++++e.SSN+=+11122333;
++++++++++++++e.number+=+101;

++++++++++++++try
++++++++++++++{
+++++++++++++++++FileOutputStream+fileOut+=
+++++++++++++++++new+FileOutputStream("/tmp/employee.ser");
+++++++++++++++++ObjectOutputStream+out+=+new+ObjectOutputStream(fileOut);
+++++++++++++++++out.writeObject(e);
+++++++++++++++++out.close();
+++++++++++++++++fileOut.close();
+++++++++++++++++System.out.printf("Serialized+data+is+saved+in+/tmp/employee.ser");
++++++++++++++}catch(IOException+i)
++++++++++++++{
++++++++++++++++++i.printStackTrace();
++++++++++++++}
+++++++++++}
++++++++}

++++import+java.io.*;
++++public+class+DeserializeDemo
++++{
+++++++public+static+void+main(String+[]+args)
+++++++{
++++++++++Employee+e+=+null;
++++++++++try
++++++++++{
+++++++++++++FileInputStream+fileIn+=+new+FileInputStream("/tmp/employee.ser");
+++++++++++++ObjectInputStream+in+=+new+ObjectInputStream(fileIn);
+++++++++++++e+=+(Employee)+in.readObject();
+++++++++++++in.close();
+++++++++++++fileIn.close();
++++++++++}catch(IOException+i)
++++++++++{
+++++++++++++i.printStackTrace();
+++++++++++++return;
++++++++++}catch(ClassNotFoundException+c)
++++++++++{
+++++++++++++System.out.println("Employee+class+not+found");
+++++++++++++c.printStackTrace();
+++++++++++++return;
++++++++++}
++++++++++System.out.println("Deserialized+Employee...");
++++++++++System.out.println("Name:+"+%2B+e.name);
++++++++++System.out.println("Address:+"+%2B+e.address);
++++++++++System.out.println("SSN:+"+%2B+e.SSN);
++++++++++System.out.println("Number:+"+%2B+e.number);
++++++++}
++++}|code-block|syntax|javascript|1435476|entityMap|0|LINK|mutability|MUTABLE|url|http://www.tutorialspoint.com/java/java_serialization.htm^0|A|1L|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Return the file as an Object : <a href="http://www.tutorialspoint.com/java/java_serialization.htm" rel="nofollow noreferrer">http://www.tutorialspoint.com/java/java_serialization.htm</a>

<pre><code> import java.io.*;

 public class SerializeDemo
 {
 public static void main(String [] args)
 {
 Employee e = new Employee();
 e.name = "Reyan Ali";
 e.address = "Phokka Kuan, Ambehta Peer";
 e.SSN = 11122333;
 e.number = 101;

 try
 {
 FileOutputStream fileOut =
 new FileOutputStream("/tmp/employee.ser");
 ObjectOutputStream out = new ObjectOutputStream(fileOut);
 out.writeObject(e);
 out.close();
 fileOut.close();
 System.out.printf("Serialized data is saved in /tmp/employee.ser");
 }catch(IOException i)
 {
 i.printStackTrace();
 }
 }
 }

 import java.io.*;
 public class DeserializeDemo
 {
 public static void main(String [] args)
 {
 Employee e = null;
 try
 {
 FileInputStream fileIn = new FileInputStream("/tmp/employee.ser");
 ObjectInputStream in = new ObjectInputStream(fileIn);
 e = (Employee) in.readObject();
 in.close();
 fileIn.close();
 }catch(IOException i)
 {
 i.printStackTrace();
 return;
 }catch(ClassNotFoundException c)
 {
 System.out.println("Employee class not found");
 c.printStackTrace();
 return;
 }
 System.out.println("Deserialized Employee...");
 System.out.println("Name: " + e.name);
 System.out.println("Address: " + e.address);
 System.out.println("SSN: " + e.SSN);
 System.out.println("Number: " + e.number);
 }
 }
</code></pre>

blocks|key|1435518|text|序列化是通过将对象转换为字节码来保存对象的特定状态的过程。这个转换后的字节码用于在2个JVM之间传输对象状态，其中接收JVM对字节码进行反序列化，以检索共享对象的状态。序列化和反序列化在所涉及的JVMS中使用serialVersionUID作为引用来完成。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1435519|在Java中，使用序列化和外部化接口也可以实现同样的目的|1435520|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Serialization is a process of saving the specific state of an object by converting it into byte code. This converted byte code is used to transfer object states between 2 JVM where the receiving JVM deserialises the bytecode to retrieve the state of the object that was shared.
The serialization and de-serialization is done using serialVersionUID as reference in JVMS involved.
In Java the same is achieved using Serialization and Externalisation interfaces

What is meant by "object serialization"? Can you please explain it with some examples?

What is object serialization?

Java

什么是“对象序列化”？你能用一些例子来解释一下吗？

问什么是对象序列化？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问什么是对象序列化？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问什么是对象序列化？
EN