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public class Encryption {
/**
* @param args
*/
public static void main(String[] args) {
System.out.println(Encryption.getMD5Str("1111"));
}
public static String getMD5Str(String str) {
MessageDigest messageDigest = null;
try {
messageDigest = MessageDigest.getInstance("MD5");
messageDigest.reset();
messageDigest.update(str.getBytes("UTF-8"));
} catch (NoSuchAlgorithmException e) {
System.out.println("NoSuchAlgorithmException caught!");
System.exit(-1);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
byte [] byteArray = messageDigest.digest();
StringBuffer md5StringBuffer = new StringBuffer();
for(int i = 0; i < byteArray.length; ++ i) {
if(Integer.toHexString(0xFF & byteArray[i]).length() == 1) {
md5StringBuffer.append("0");
md5StringBuffer.append(Integer.toHexString(0xFF & byteArray[i]));
} else {
md5StringBuffer.append(Integer.toHexString(0xFF & byteArray[i]));
}
}
return md5StringBuffer.toString();
}
}
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