JAVA中对字符串进行MD5处理

public String md5(String source) {                  StringBuffer sb = new StringBuffer(32);                  try {           MessageDigest md    = MessageDigest.getInstance("MD5");           byte[] array        = md.digest(source.getBytes("utf-8"));                          for (int i = 0; i < array.length; i++) {               sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).toUpperCase().substring(1, 3));           }       } catch (Exception e) {               }                  return sb.toString();   }