AuthUtil.java

package cn.alphabets.light.util;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * Created by 罗浩 on 14/11/19.
 */
public class AuthUtil {
    public static String md5(String string) throws NoSuchAlgorithmException, UnsupportedEncodingException {
        byte[] hash = MessageDigest.getInstance("MD5").digest(string.getBytes("UTF-8"));

        StringBuilder hex = new StringBuilder(hash.length * 2);
        for (byte b : hash) {
            if ((b & 0xFF) < 0x10) hex.append("0");
            hex.append(Integer.toHexString(b & 0xFF));
        }
        return hex.toString();
    }
}