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| import java.security.MessageDigest;
public class JavaMD5Util {
public static String md5(String str) {
MessageDigest messageDigest = null;
try {
messageDigest = MessageDigest.getInstance("MD5");
messageDigest.reset();
messageDigest.update(str.getBytes(StandardCharsets.UTF_8));
} catch (Exception e) {
e.printStackTrace();
}
byte[] byteArray = messageDigest.digest();
StringBuffer md5StrBuff = new StringBuffer();
for (int i = 0; i < byteArray.length; ++i) {
if (Integer.toHexString(0xFF & byteArray[i]).length() == 1) {
md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
} else {
md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
}
}
return md5StrBuff.toString();
}
public static void main(String[] args) {
System.out.println(JavaMD5Util.md5("Hello"));
}
}
|