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我用java写了一个RSA加密实用程序，在本地PC上加解密就可以了。我将它部署到weblogic server 8.1，发现它无法正确解密字符串，并得到“javax.crypto.BadPaddingException: Decryption error”。

我将它部署到 apache-tomcat-9.0.10 并运行相同的程序，它工作正常。我错过了什么吗？有人可以给我解决方案或一些相关的关键字吗？

这是我的代码：

public class EncryptUtil {
 private KeyPair keyPair;
 private static EncryptUtil encryptUtil;
 private Cipher cipher;
 /** 加解密模組 */
 public static EncryptUtil getEncryptUtil() {
      if (encryptUtil == null) {
          encryptUtil = new EncryptUtil();
      }
      return encryptUtil;
 }
 private EncryptUtil() {
      Security.addProvider(new  org.bouncycastle.jce.provider.BouncyCastleProvider());
      try {
          //cipher = Cipher.getInstance("RSA");
          cipher =  Cipher.getInstance("RSA/ECB/PKCS1Padding");
      } catch (NoSuchAlgorithmException e1) {
          // TODO Auto-generated catch block
          e1.printStackTrace();
      } catch (NoSuchPaddingException e1) {
          // TODO Auto-generated catch block
          e1.printStackTrace();
      }
      if (keyPair == null) {
          try {
               keyPair = loadKeyPair();
          } catch (Exception e) {
               e.printStackTrace();
          }
      }
 }
 /**
  * 私鑰解密
  *
  * @param privateKey 私鑰
  * @param encryptStr 解密內容
  */
 public String decrypt(String encryptStr)
          throws NoSuchAlgorithmException,  NoSuchPaddingException, InvalidKeyException,  IllegalBlockSizeException,
          BadPaddingException, FormatException {
      //Cipher cipher = Cipher.getInstance("RSA");
      // 傳遞私鑰，設定為解密模式。
      cipher.init(Cipher.DECRYPT_MODE,  keyPair.getPrivate());
      // 解密器解密由Base64解碼後的密文,獲得明文位元組陣列
      byte[] b = cipher.doFinal(new  BASE64Decoder().decode(encryptStr));
      // 轉換成字串
      return new String(b);
 }
 /**
  * 公鑰加密
  *
  * @param rawStr    要加密的內容
  * @param publicKey 公鑰
  * @return
  */
 public String encrypt(String rawStr) throws  NoSuchAlgorithmException, NoSuchPaddingException,
          InvalidKeyException,  IllegalBlockSizeException, BadPaddingException {
      // 獲取一個加密演算法為RSA的加解密器物件cipher。
      //Cipher cipher = Cipher.getInstance("RSA");
      // 設定為加密模式,並將公鑰給cipher。
      cipher.init(Cipher.ENCRYPT_MODE,  keyPair.getPublic());
      // 獲得密文
      byte[] secret =  cipher.doFinal(rawStr.getBytes());
      // 進行Base64編碼並返回
      return new BASE64Encoder().encode(secret);
 }
 /**
  * 載入金鑰
  *
  * @param path 檔案路徑
  */
 public KeyPair loadKeyPair()
          throws IOException,  NoSuchAlgorithmException, InvalidKeySpecException {
      // Initiate the factory with specified  algorithm.
      KeyFactory keyFactory =  KeyFactory.getInstance("RSA");
      // Read public key from file.
      // File fileForPublicKey = Paths.get(path,  "public.key").toFile();
      File fileForPublicKey = new  File("C://encrypt//public.key");
      PublicKey publicKey = null;
      FileInputStream PublicFis = null;
      try {
          PublicFis = new  FileInputStream(fileForPublicKey);
          byte[] loadedBytes = new byte[(int)  fileForPublicKey.length()];
          PublicFis.read(loadedBytes);
          X509EncodedKeySpec spec = new  X509EncodedKeySpec(loadedBytes);
          publicKey =  keyFactory.generatePublic(spec);
      } catch (Exception e) {
          e.printStackTrace();
      } finally {
          try {
               if (PublicFis != null)
                    PublicFis.close();
          } catch (IOException e) {
               e.printStackTrace();
          }
      }
      // Read private key from file.
      // File fileForPrivateKey = Paths.get(path,  "private.key").toFile();
      File fileForPrivateKey = new  File("C://encrypt//private.key");
      PrivateKey privateKey = null;
      FileInputStream PrivateFis = null;
      try {
          PrivateFis = new  FileInputStream(fileForPrivateKey);
          byte[] loadedBytes = new byte[(int)  fileForPrivateKey.length()];
          PrivateFis.read(loadedBytes);
          PKCS8EncodedKeySpec privateKeySpec = new  PKCS8EncodedKeySpec(loadedBytes);
          privateKey =  keyFactory.generatePrivate(privateKeySpec);
      } catch (Exception e) {
          e.printStackTrace();
      } finally {
          try {
               if (PrivateFis != null)
                    PrivateFis.close();
          } catch (IOException e) {
               e.printStackTrace();
          }
      }
      return new KeyPair(publicKey, privateKey);
 }

}

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