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本篇文章演示如何在 Java 中将对象序列化为字符串。

Java 中将对象序列化为字符串

要将对象序列化为字符串，我们可以使用 base 64 编码。我们可以通过创建两个类来实现序列化，一个类将实现 Serializable 类，另一个类将用于创建 Serializable 类的对象并对其进行序列化。

请参阅 Java 示例：

package delftstack;

import java.util.*;
import java.io.*;

public class Serialize_Object {

    public static void main( String [] args )  throws IOException,
                                                      ClassNotFoundException {
        String Serialized_String = To_String( new Demo_Serialize() );
        System.out.println(" The Serialized String " );
        System.out.println( Serialized_String );
        Demo_Serialize Original_object = ( Demo_Serialize ) From_String( Serialized_String );
        System.out.println( "\n\nThe Original String");
        System.out.println( Original_object );


    }

   private static Object From_String( String s ) throws IOException ,
                                                       ClassNotFoundException {
        byte [] Byte_Data = Base64.getDecoder().decode( s );
        ObjectInputStream Object_Input_Stream = new ObjectInputStream( new ByteArrayInputStream(Byte_Data) );
        Object Demo_Object  = Object_Input_Stream.readObject();
        Object_Input_Stream.close();
        return Demo_Object;
   }

    private static String To_String( Serializable Demo_Object ) throws IOException {
        ByteArrayOutputStream Byte_Array_Output_Stream = new ByteArrayOutputStream();
        ObjectOutputStream Object_Output_Stream = new ObjectOutputStream( Byte_Array_Output_Stream );
        Object_Output_Stream.writeObject( Demo_Object );
        Object_Output_Stream.close();
        return Base64.getEncoder().encodeToString(Byte_Array_Output_Stream.toByteArray());
    }
}

class Demo_Serialize implements Serializable {

    private final static long serialVersionUID = 1;

    int i    = Integer.MAX_VALUE;
    String s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    Double d = new Double( -1.0 );
    public String toString(){
        return  "jiyik.com is a resource for everyone interested in "
        		+ "programming, embedded software, and electronics. "
        		+ "It covers the programming languages like Python, "
        		+ "C/C++, C#, and so on in this website's first "
        		+ "development stage. Open-source hardware also falls "
        		+ "in the website's scope, like Arduino, Raspberry Pi, and BeagleBone.";
    }
}

上面的代码将创建一个 Demo_Serialize 类的对象并将该对象序列化为一个字符串。上面代码的输出将是：

The Serialized String 
rO0ABXNyAA5EZW1vX1NlcmlhbGl6ZQAAAAAAAAABAgADSQABaUwAAWR0ABJMamF2YS9sYW5nL0RvdWJsZTtMAAFzdAASTGphdmEvbGFuZy9TdHJpbmc7eHB/////c3IAEGphdmEubGFuZy5Eb3VibGWAs8JKKWv7BAIAAUQABXZhbHVleHIAEGphdmEubGFuZy5OdW1iZXKGrJUdC5TgiwIAAHhwv/AAAAAAAAB0ABpBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWg==


The Original String
jiyik.com is a resource for everyone interested in programming, embedded software, and electronics. It covers the programming languages like Python, C/C++, C#, and so on in this website's first development stage. Open-source hardware also falls in the website's scope, like Arduino, Raspberry Pi, and BeagleBone.