如何在Java中加密和解密Properties文件

在Java中加密和解密Properties文件可以通过使用Java的加密库实现。以下是一个示例代码，演示如何使用AES加密算法加密和解密Properties文件：

import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Properties;  public class PropertiesEncryption {      private static final String SECRET_KEY = "ThisIsASecretKey";      public static void encryptPropertiesFile(String inputFilePath, String outputFilePath) throws Exception {         Properties properties = new Properties();         properties.load(new FileInputStream(inputFilePath));          Cipher cipher = Cipher.getInstance("AES");         SecretKeySpec secretKeySpec = new SecretKeySpec(SECRET_KEY.getBytes(), "AES");         cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);          FileOutputStream outputStream = new FileOutputStream(outputFilePath);         properties.storeToXML(outputStream, "Encrypted Properties");         outputStream.close();     }      public static void decryptPropertiesFile(String inputFilePath, String outputFilePath) throws Exception {         Properties properties = new Properties();         FileInputStream inputStream = new FileInputStream(inputFilePath);         properties.loadFromXML(inputStream);         inputStream.close();          Cipher cipher = Cipher.getInstance("AES");         SecretKeySpec secretKeySpec = new SecretKeySpec(SECRET_KEY.getBytes(), "AES");         cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);          FileOutputStream outputStream = new FileOutputStream(outputFilePath);         properties.store(outputStream, "Decrypted Properties");         outputStream.close();     }      public static void main(String[] args) {         try {             encryptPropertiesFile("input.properties", "encrypted.properties");             decryptPropertiesFile("encrypted.properties", "decrypted.properties");         } catch (Exception e) {             e.printStackTrace();         }     } } 

在上面的示例中，我们使用AES加密算法来加密和解密Properties文件。您可以将SECRET_KEY更改为自己的密钥。您可以使用properties.storeToXML()方法将Properties对象保存到XML文件中，以便在加密和解密时保留属性的结构。您可以根据需要更改加密和解密的文件路径和名称。