public static void main(String args[]) {                String string = "abcdef你";            KeyGenerator keyGenerator = null;             try {                 keyGenerator = KeyGenerator.getInstance("DES");                      SecretKey secretKey = keyGenerator.generateKey();                 byte[] bytesKey = secretKey.getEncoded();                 DESKeySpec desKeySpec = new DESKeySpec(bytesKey);                 SecretKeyFactory factory = SecretKeyFactory.getInstance("DES");                 SecretKey secretKey1 = factory.generateSecret(desKeySpec);                      Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");                 cipher.init(Cipher.ENCRYPT_MODE, secretKey1);                 byte[] sbytes = string.getBytes("utf-8");                 byte[] bytes = cipher.doFinal(string.getBytes());                 System.out.println("加密前 bytes[]:" + byte2hex(sbytes));                 System.out.println("加密前string:" + new String(sbytes, "UTF-8"));                 System.out.println("加密后 bytes[]:" + byte2hex(bytes));                 System.out.println("加密后string:" + new String(bytes, "UTF-8"));             } catch (InvalidKeyException e) {                 e.printStackTrace();             } catch (InvalidKeySpecException e) {                 e.printStackTrace();             } catch (BadPaddingException e) {                 e.printStackTrace();             } catch (NoSuchAlgorithmException e) {                 e.printStackTrace();             } catch (IllegalBlockSizeException e) {                 e.printStackTrace();             } catch (NoSuchPaddingException e) {                 e.printStackTrace();             } catch (UnsupportedEncodingException e) {                 e.printStackTrace();             }              }              private static String byte2hex(byte[] buffer) {             String h = "";                  for (int i = 0; i < buffer.length; i++) {                 String temp = Integer.toHexString(buffer[i] & 0xFF);                 if (temp.length() == 1) {                     temp = "0" + temp;                 }                 h = h + " " + temp;             }             return h;         }         

输出结果

加密前 bytes[]: 61 62 63 64 65 66 e4 bd a0 加密前string:abcdef你 加密后 bytes[]: e1 32 7c 94 ce 5d 08 f6 8f b0 af 32 5c d3 dc a5 加密后string:�2|��]����2�ܥ