com.github.hdy.common.util.MD5Util Maven / Gradle / Ivy
package com.github.hdy.common.util;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
/**
* MD5密码工具类
*
* @author 贺大爷
* @date 2019/6/25
*/
public class MD5Util {
private static final String[] hexDigits = {"0", "1", "2", "3", "4", "5",
"6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
public static void main(String[] args) throws UnsupportedEncodingException {
//System.err.println(MD5Util.MD5Encode("OWU2OWU5YWFjYjc3NDdkOGQwYzQ0MzE3YmEzMjZjZmUyNWQwMjE0ZGU1YzE4NzljMzcyZDU0YjAyOTY4OGVhZgabsg_usr", "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];
}
}