package org.fouram.core.util;

import java.security.MessageDigest;

public class MD5 {
	public static String md5(String str) {
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(str.getBytes());
			byte[] b = md.digest();

			StringBuffer buf = new StringBuffer("");
			for (int offset = 0; offset < b.length; offset++) {
				int i = b[offset];
				if (i < 0)
					i += 256;
				if (i < 16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}
			str = buf.toString();
		} catch (Exception e) {
			LoggerUtil.error(e);
		}

		return str;
	}

	public static void main(String[] args) {
		// System.out.println(md5("31119@qq.com123456"));
		// System.out.println(md5("mj1"));
	}
}
