/**

 *对字符串进行md5加密

 *@param md5String

 *@param md5Key

 *@return md5加密后的密文

 */

private static String md5String(String md5String,String md5Key){

String md5Value =MD5Encoder(md5String+ md5Key);

    return

md5Value;

}

public final static String MD5Encoder(String s) {

return MD5Encoder(s,"utf-8");

}

public final static String MD5Encoder(String s, String charset){

try {

byte[] btInput =

s.getBytes(charset);

MessageDigestmdInst = MessageDigest.getInstance("MD5");

mdInst.update(btInput);

        byte

[] md =

mdInst.digest();

StringBuffer sb = new StringBuffer();

        for

(int i = 0; i < md.length; i++) {

int val = ((int) md[i]) & 0xff;

            if

(val < 16){

                sb.append(

"0");

}

            sb.append(Integer.toHexString(val))

;

}

return sb.toString();

} catch (Exception e) {

        ATSLog.info(

"MD5Encoder异常：" + e.getMessage());

        return null;

}

}

加密方法调用：String md5Value =md5String(req,md5Key);