package com.spoon.tools; import java.security.MessageDigest; public class XrEncryptionUtil { /** * MD5加密 */ public static String md5Encryption(String str) { try { MessageDigest md5Digest = MessageDigest.getInstance("MD5"); byte[] byteArray = str.getBytes("UTF-8"); byte[] md5Bytes = md5Digest.digest(byteArray); StringBuffer hexValue = new StringBuffer(); for (int i = 0; i < md5Bytes.length; i++) { int val = ((int) md5Bytes[i]) & 0xff; if (val < 16) { hexValue.append("0"); } hexValue.append(Integer.toHexString(val)); } return hexValue.toString(); } catch (Exception e) { e.printStackTrace(); } return null; } }