md5,base64加密

import java.security.MessageDigest;   
import org.apache.commons.codec.binary.Base64;
public class MD5Util {
    /*** 
     * MD5加密 生成md5码
     * @param 待加密字符串
     * @return 返回md5码
     */
    public static String md5Encode(String inStr) throws Exception {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
            return "";
        }

        byte[] byteArray = inStr.getBytes("UTF-8");
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16) {
                hexValue.append("0");
            }
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

    /**
     * 测试主函数
     * @param args
     * @throws Exception
     */
    public static void main(String args[]) throws Exception {
        String appSecret = new String("12345678");
        String str = appSecret+WriterOrReaderTxt.readTxt()+appSecret;
        String md5=md5Encode(str);
        System.out.println("MD5后：" + md5);
        System.out.println("Base64后：" +Base64.encodeBase64String(md5.getBytes("UTF-8")));
    }
}