JAVA MD5 加密
代码如下：import java.io.UnsupportedEncodingException;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;public class MD5 {private String getMD5Str(String str) { MessageDigest messageDigest = null; try { messageDigest = MessageDigest.getInstance("MD5"); messageDigest.reset(); messageDigest.update(str.getBytes("UTF-8")); } catch (NoSuchAlgorithmException e) { System.out.println("NoSuchAlgorithmException caught!"); System.exit(-1); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } byte[] byteArray = messageDigest.digest(); StringBuffer md5StrBuff = new StringBuffer(); for (int i = 0; i < byteArray.length; i++) { if (Integer.toHexString(0xFF & byteArray).length() == 1) md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray)); else md5StrBuff.append(Integer.toHexString(0xFF & byteArray)); } return md5StrBuff.toString(); }public static void main(String[] args){MD5 obj = new MD5();System.out.println(obj.getMD5Str("111111"));}} 参考：http://warren.iteye.com/blog/107386
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