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A Simple Tool Operations Class
package com.luues.util.encryption;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.util.concurrent.atomic.AtomicInteger;
public class MD5Util {
private static final String[] hexDigits = { "0", "1", "2", "3", "4", "5",
"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
//"c6a82f34f5ebb087";
private static AtomicInteger count = new AtomicInteger(0);
public static void main(String[] args) throws UnsupportedEncodingException {
//System.err.println(MD5Encode(MD5Util.MD5Encode("admin2018", "utf-8"), "utf-8"));
/*for(int i = 0 ; i < 20; i ++) {
int number = count.getAndAdd(1);
int lookupKey = number % 2;
System.err.println(lookupKey);
}*/
System.err.println(URLEncoder.encode("http://4iqkg4.natappfree.cc/bind", "utf-8"));
}
public static String MD5Encode(String origin, String charsetname) {
String resultString = null;
try {
resultString = new String(origin);
MessageDigest md = MessageDigest.getInstance("MD5");
if (charsetname == null || "".equals(charsetname))
resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
else
resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
} catch (Exception exception) {
}
return resultString;
}
private static String byteArrayToHexString(byte b[]) {
StringBuffer resultSb = new StringBuffer();
for (int i = 0; i < b.length; i++)
resultSb.append(byteToHexString(b[i]));
return resultSb.toString();
}
private static String byteToHexString(byte b) {
int n = b;
if (n < 0)
n += 256;
int d1 = n / 16;
int d2 = n % 16;
return hexDigits[d1] + hexDigits[d2];
}
}