最后一个单元在使用Java 8 Base64时没有足够的有效位。

huangapple
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标题翻译

Last unit does not have enough valid bits with java 8 Base64

问题

Here is the translated code:

  1. import java.security.NoSuchAlgorithmException;
  2. import java.security.spec.InvalidKeySpecException;
  3. import java.security.spec.KeySpec;
  4. import java.util.Base64;
  6. import javax.annotation.PostConstruct;
  7. import javax.crypto.Cipher;
  8. import javax.crypto.SecretKey;
  9. import javax.crypto.SecretKeyFactory;
  10. import javax.crypto.spec.GCMParameterSpec;
  11. import javax.crypto.spec.PBEKeySpec;
  12. import javax.crypto.spec.SecretKeySpec;
  14. import org.slf4j.Logger;
  15. import org.slf4j.LoggerFactory;
  16. import org.springframework.beans.factory.annotation.Value;
  17. import org.springframework.stereotype.Component;
  19. @Component
  20. public class EncryptorBean {
  21.     private Logger logger = LoggerFactory.getLogger(EncryptorBean.class);
  23.     @Value("${security.encryptor.encryption-key}")
  24.     private String encryptorEncryptionKey;
  26.     @Value("${security.encryptor.salt}")
  27.     private String encryptorSalt;
  29.     @Value("${security.encryptor.password}")
  30.     private String encryptorPassword;
  32.     private static final int KEY_LENGTH = 256;
  33.     private static final String ALGORITHM = "AES";
  34.     private static final int ITERATION_COUNT = 65536;
  35.     private static final String PBE_ALGORITHM = "PBEWithHmacSHA256AndAES_128";
  36.     private static final String CIPHER_INSTANCE = "AES_256/GCM/NOPADDING";
  37.     private static final int GCM_AUTHENTICATION_TAG_SIZE = 16;
  39.     private transient SecretKey key;
  40.     Cipher cipher;
  42.     @PostConstruct
  43.     public void postConstruct() {
  44.         try {
  45.             KeySpec spec = new PBEKeySpec(encryptorPassword.toCharArray(), encryptorSalt.getBytes(), ITERATION_COUNT, KEY_LENGTH);
  46.             SecretKey skey = SecretKeyFactory.getInstance(PBE_ALGORITHM).generateSecret(spec);
  47.             key = new SecretKeySpec(skey.getEncoded(), ALGORITHM);
  48.         } catch (SecurityException | InvalidKeySpecException | NoSuchAlgorithmException ex) {
  49.             ex.printStackTrace();
  50.         }
  51.     }
  53.     public String encrypt(String plainText) {
  54.         return encrypt(plainText, encryptorEncryptionKey);
  55.     }
  57.     public String encrypt(String plainText, String encryptionKey) {
  58.         String cipherText = null;
  59.         try {
  60.             cipher = Cipher.getInstance(CIPHER_INSTANCE);
  61.             GCMParameterSpec params = new GCMParameterSpec(GCM_AUTHENTICATION_TAG_SIZE * Byte.SIZE, encryptionKey.getBytes(), 0, 12);
  62.             cipher.init(Cipher.ENCRYPT_MODE, key, params);
  64.             byte[] encrypted = cipher.doFinal(plainText.getBytes("UTF-8"));
  65.             cipherText = Base64.getEncoder().withoutPadding().encodeToString(encrypted);
  66.         } catch (Exception e) {
  67.             logger.warn(e.getMessage());
  68.         }
  69.         return cipherText;
  70.     }
  72.     public String decrypt(String cipherText) {
  73.         return decrypt(cipherText, encryptorEncryptionKey);
  74.     }
  76.     public String decrypt(String cipherText, String encryptionKey) {
  77.         String plainText = null;
  78.         try {
  79.             cipher = Cipher.getInstance(CIPHER_INSTANCE);
  80.             GCMParameterSpec params = new GCMParameterSpec(GCM_AUTHENTICATION_TAG_SIZE * Byte.SIZE, encryptionKey.getBytes(), 0, 12);
  81.             cipher.init(Cipher.DECRYPT_MODE, key, params);
  83.             byte[] bytes = Base64.getDecoder().decode(cipherText);
  84.             byte[] decrypted = cipher.doFinal(bytes);
  85.             plainText = new String(decrypted, "UTF8");
  86.         } catch (Exception e) {
  87.             logger.warn(e.getMessage());
  88.         }
  89.         return plainText;
  90.     }
  92.     public boolean isEncoded(String cipherText) {
  93.         boolean encoded = false;
  94.         if (cipherText != null && !cipherText.trim().isEmpty()) {
  95.             try {
  96.                 GCMParameterSpec params = new GCMParameterSpec(GCM_AUTHENTICATION_TAG_SIZE * Byte.SIZE, encryptorEncryptionKey.getBytes(), 0, 12);
  97.                 cipher.init(Cipher.DECRYPT_MODE, key, params);
  98.                 byte[] bytes = Base64.getDecoder().decode(cipherText);
  99.                 cipher.doFinal(bytes);
  100.                 encoded = true;
  101.             } catch (Throwable e) {
  102.                 // handle exception
  103.             }
  104.         }
  105.         return encoded;
  106.     }
  107. }

The warning messages you are encountering usually occur when the input provided for decoding as base64 is not valid base64-encoded data. To fix this issue, you should ensure that the input you are trying to decrypt is properly base64-encoded. If you are receiving these warnings consistently, it's possible that the data you are attempting to decrypt has been corrupted or modified in some way before reaching the decryption process. Double-check the source and handling of the encrypted data to ensure its integrity.

英文翻译

I have next class for encryption and decryption:

  1. import java.security.NoSuchAlgorithmException;
  2. import java.security.spec.InvalidKeySpecException;
  3. import java.security.spec.KeySpec;
  4. import java.util.Base64;
  6. import javax.annotation.PostConstruct;
  7. import javax.crypto.Cipher;
  8. import javax.crypto.SecretKey;
  9. import javax.crypto.SecretKeyFactory;
  10. import javax.crypto.spec.GCMParameterSpec;
  11. import javax.crypto.spec.PBEKeySpec;
  12. import javax.crypto.spec.SecretKeySpec;
  14. import org.slf4j.Logger;
  15. import org.slf4j.LoggerFactory;
  16. import org.springframework.beans.factory.annotation.Value;
  17. import org.springframework.stereotype.Component;
  19. @Component
  20. public class EncryptorBean {
  21. 	private Logger logger = LoggerFactory.getLogger(EncryptorBean.class);
  23. 	@Value("${security.encryptor.encryption-key}")
  24. 	private String encryptorEncryptionKey;
  26. 	@Value("${security.encryptor.salt}")
  27. 	private String encryptorSalt;
  29. 	@Value("${security.encryptor.password}")
  30. 	private String encryptorPassword;
  32. 	private static final int KEY_LENGTH = 256;
  33. 	private static final String ALGORITHM = "AES";
  34. 	private static final int ITERATION_COUNT = 65536;
  35. 	private static final String PBE_ALGORITHM = "PBEWithHmacSHA256AndAES_128";
  36. 	private static final String CIPHER_INSTANCE = "AES_256/GCM/NOPADDING";
  37. 	private static final int GCM_AUTHENTICATION_TAG_SIZE = 16;
  39. 	// the key
  40. 	private transient SecretKey key;
  41. 	Cipher cipher;
  43. 	/**
  44. 	 * Post construct to creates secret key. In production we may want to avoid keeping the secret key hanging around in memory for very long.
  45. 	 */
  46. 	@PostConstruct
  47. 	public void postConstruct() {
  48. 		try {
  49. 			// create the PBE key
  50. 			KeySpec spec = new PBEKeySpec(encryptorPassword.toCharArray(), encryptorSalt.getBytes(), ITERATION_COUNT, KEY_LENGTH);
  51. 			SecretKey skey = SecretKeyFactory.getInstance(PBE_ALGORITHM).generateSecret(spec);
  52. 			// recast key as straightforward AES without padding.
  53. 			key = new SecretKeySpec(skey.getEncoded(), ALGORITHM);
  54. 		} catch (SecurityException | InvalidKeySpecException | NoSuchAlgorithmException ex) {
  55. 			// handle appropriately...
  56. 			ex.printStackTrace();
  57. 		}
  58. 	}
  60. 	/**
  61. 	 * Encrypt String
  62. 	 */
  63. 	public String encrypt(String plainText) {
  64. 		return encrypt(plainText, encryptorEncryptionKey);
  65. 	}
  67. 	public String encrypt(String plainText, String encryptionKey) {
  68. 		String cipherText = null;
  69. 		try {
  70. 			cipher = Cipher.getInstance(CIPHER_INSTANCE); // we must use it here to avoid java.security.InvalidAlgorithmParameterException: Cannot reuse iv for GCM encryption
  71. 			GCMParameterSpec params = new GCMParameterSpec(GCM_AUTHENTICATION_TAG_SIZE * Byte.SIZE, encryptionKey.getBytes(), 0, 12);
  72. 			cipher.init(Cipher.ENCRYPT_MODE, key, params);
  74. 			byte[] encrypted = cipher.doFinal(plainText.getBytes("UTF-8"));
  75. 			cipherText = Base64.getEncoder().withoutPadding().encodeToString(encrypted);
  76. 		} catch (Exception e) {
  77. 			logger.warn(e.getMessage());
  78. 		}
  79. 		return cipherText;
  80. 	}
  82. 	/**
  83. 	 * Decrypt String
  84. 	 */
  85. 	public String decrypt(String cipherText) {
  86. 		return decrypt(cipherText, encryptorEncryptionKey);
  88. 	}
  90. 	public String decrypt(String cipherText, String encryptionKey) {
  91. 		String plainText = null;
  92. 		try {
  93. 			cipher = Cipher.getInstance(CIPHER_INSTANCE); // we must use it here to avoid java.security.InvalidAlgorithmParameterException: Cannot reuse iv for GCM encryption
  94. 			GCMParameterSpec params = new GCMParameterSpec(GCM_AUTHENTICATION_TAG_SIZE * Byte.SIZE, encryptionKey.getBytes(), 0, 12);
  95. 			cipher.init(Cipher.DECRYPT_MODE, key, params);
  97. 			byte[] bytes = Base64.getDecoder().decode(cipherText);
  98. 			byte[] decrypted = cipher.doFinal(bytes);
  99. 			plainText = new String(decrypted, "UTF8");
  100. 		} catch (Exception e) {
  101. 			logger.warn(e.getMessage());
  102. 		}
  103. 		return plainText;
  104. 	}
  106. 	public boolean isEncoded(String cipherText) {
  107. 		boolean encoded = false;
  108. 		if (cipherText != null && !cipherText.trim().isEmpty()) {
  109. 			try {
  110. 				GCMParameterSpec params = new GCMParameterSpec(GCM_AUTHENTICATION_TAG_SIZE * Byte.SIZE, encryptorEncryptionKey.getBytes(), 0, 12);
  111. 				cipher.init(Cipher.DECRYPT_MODE, key, params);
  112. 				byte[] bytes = Base64.getDecoder().decode(cipherText);
  113. 				cipher.doFinal(bytes);
  114. 				encoded = true;
  115. 			} catch (Throwable e) {
  116. 				// handle exception. Perhaps set value to null?
  117. 				// e.printStackTrace();
  118. 			}
  119. 		}
  120. 		return encoded;
  121. 	}
  123. }

But when i use it i always get a warning messages:

> Illegal base64 character 40
>
> and
>
> Last unit does not have enough valid bits

And actually in other environment i got this:

  1. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Last unit does not have enough valid bits
  2. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  3. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  4. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  5. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  6. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  7. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  8. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  9. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  10. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  11. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  12. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  13. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  14. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  15. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  16. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  17. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  18. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  19. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  20. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  21. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  22. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  23. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  24. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  25. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  26. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  27. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  28. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  29. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  30. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  31. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  32. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  33. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  34. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  35. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  36. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  37. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  38. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  39. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  40. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  41. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 5f
  42. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  43. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  44. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  45. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  46. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  47. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  48. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  49. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  50. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  51. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  52. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  53. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  54. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  55. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  56. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  57. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  58. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  59. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  60. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  61. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  62. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  63. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  64. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  65. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  66. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  67. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  68. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  69. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  70. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  71. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  72. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  73. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  74. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  75. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  76. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  77. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  78. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  79. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  80. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  81. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  82. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  83. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  84. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  85. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  86. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  87. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  88. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  89. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  90. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  91. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 2e
  92. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  93. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  94. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  95. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  96. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  97. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  98. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  99. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24
  100. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 40
  101. WARN 1 --- [nio-8080-exec-1] xxx.xxx.xxx.EncryptorBean  : Illegal base64 character 24

So why i got this warning? and how to fix it?

huangapple
  • 本文由 发表于 2020年3月17日 01:32:31
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