MD5Util.java

package gov.anzong.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Util
{
	public static String MD5(String plainText ) {
		StringBuffer buf = null;
		try {
		MessageDigest md = MessageDigest.getInstance("MD5");
		md.update(plainText.getBytes());
		byte b[] = md.digest();
		int i;
		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));
		}
		} catch (NoSuchAlgorithmException e) {
		e.printStackTrace();
		}
		return buf.toString();
		}
}