<<< Java生成Md5

 

package cn.sevennight.test;



import java.security.MessageDigest;



public class md5{



  	public static String MD5(String text) {

		try {

			MessageDigest md = MessageDigest.getInstance("MD5");

			md.update(text.getBytes());

			byte b[] = md.digest();

			int i;

			StringBuffer buf = new StringBuffer("");

			for (int offset = 0; offset < b.length; offset++) {

				i = b[offset];

				if (i < 0)

					i += 256;

				if (i < 16)

					buf.append("0");

				buf.append(Integer.toHexString(i));

			}

			return new String(buf.toString());

		} catch (Exception e) {

			e.printStackTrace();

			return "";

		}

	} 

        public static void main(String[] args) {

		String md5 =MD5("123456");

		System.out.println(md5);

	} 

}