tech.mhuang.ext.interchan.payment.wechat.util.MD5Util Maven / Gradle / Ivy
package tech.mhuang.ext.interchan.payment.wechat.util;
import java.security.MessageDigest;
public class MD5Util {
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];
}
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 final String hexDigits[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
}