import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.security.MessageDigest;/*** Md5加密方法* * @author */
public class Md5Utils
{private static final Logger log = LoggerFactory.getLogger(Md5Utils.class);private static byte[] md5(String s){MessageDigest algorithm;try{algorithm = MessageDigest.getInstance("MD5");algorithm.reset();algorithm.update(s.getBytes("UTF-8"));byte[] messageDigest = algorithm.digest();return messageDigest;}catch (Exception e){log.error("MD5 Error...", e);}return null;}private static final String toHex(byte hash[]){if (hash == null){return null;}StringBuffer buf = new StringBuffer(hash.length * 2);int i;for (i = 0; i < hash.length; i++){if ((hash[i] & 0xff) < 0x10){buf.append("0");}buf.append(Long.toString(hash[i] & 0xff, 16));}return buf.toString();}public static String hash(String s){try{return new String(toHex(md5(s)).getBytes("UTF-8"), "UTF-8");}catch (Exception e){log.error("not supported charset...{}", e);return s;}}public static void main(String[] args) {String str = "{\"test\":\"001\"}";String s = hash(str);System.out.println(s);}
}