HOWTO · Java
Java 中將物件序列化為字串
本教程演示如何在 Java 中將物件序列化為字串。
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本教程演示如何在 Java 中將物件序列化為字串。
Java 中將物件序列化為字串
要將物件序列化為字串，我們可以使用 base 64 編碼。我們可以通過建立兩個類來實現序列化，一個類將實現 Serializable 類，另一個類將用於建立 Serializable 類的物件並對其進行序列化。
請參閱 Java 示例：
package delftstack;
import java.io.*;
import java.util.*;
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 "DelftStack 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.";
}
}
上面的程式碼將建立一個 Demo_Serialize 類的物件並將該物件序列化為一個字串。上面程式碼的輸出將是：
The Serialized String
rO0ABXNyABlkZWxmdHN0YWNrLkRlbW9fU2VyaWFsaXplAAAAAAAAAAECAANJAAFpTAABZHQAEkxqYXZhL2xhbmcvRG91YmxlO0wAAXN0ABJMamF2YS9sYW5nL1N0cmluZzt4cH////9zcgAQamF2YS5sYW5nLkRvdWJsZYCzwkopa/sEAgABRAAFdmFsdWV4cgAQamF2YS5sYW5nLk51bWJlcoaslR0LlOCLAgAAeHC/8AAAAAAAAHQAGkFCQ0RFRkdISUpLTE1OT1BRUlNUVVZXWFla
The Original String
DelftStack 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.
