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Compute md5
import org.apache.commons.lang.StringUtils;
private String computeMD5(String string) throws NoSuchAlgorithmException {
byte[] stringBytes = string.getBytes();
MessageDigest messageDigest = MessageDigest.getInstance("MD5");
messageDigest.update(stringBytes, 0, stringBytes.length);
String md5 = new BigInteger(1, messageDigest.digest()).toString(16);
md5 = StringUtils.leftPad(md5, 32, '0');
return md5;
}
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