DbSchema注册码生成
时间：2021-07-01 10:21:17
帮助过：439人阅读
java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Random;
public class DbSchemaKeyGenerator {
public static void main(String[] args) {
String name = "your_name"
;
try {
String key =
generateKey(name);
System.out.println("key: " +
key);
} catch (NoSuchAlgorithmException |
UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private static String generateKey(String name)
throws NoSuchAlgorithmException, UnsupportedEncodingException {
String salt =
getSalt();
String encryptSource = "ax5" + name + "b52w" + salt + "vb3"
;
MessageDigest localMessageDigest = MessageDigest.getInstance("MD5"
);
String hash = formatToHex(localMessageDigest.digest(encryptSource.getBytes("UTF-8"
)));
return hash.substring(0, 4) + salt + hash.substring(4
);
}
private static String formatToHex(
byte[] paramArrayOfByte) {
StringBuilder localStringBuilder =
new StringBuilder();
for (
int m = 0; m < paramArrayOfByte.length; m++
) {
if ((m % 32 == 0) && (m != 0
)) {
localStringBuilder.append("\n"
);
}
String str =
Integer.toHexString(paramArrayOfByte[m]);
if (str.length() < 2
) {
str = "0" +
str;
}
if (str.length() > 2
) {
str = str.substring(str.length() - 2
);
}
localStringBuilder.append(str);
}
return localStringBuilder.toString();
}
private static int random(
int min,
int max) {
return rand() % (max - min + 1) +
min;
}
private static int rand() {
return new Random().nextInt(Integer.MAX_VALUE);
}
private static String getSalt() {
int r = random(10000, 30000
);
return String.valueOf(r);
}
}
View Code
Tips：最后说一句，如果有条件，而且又使用的比较多的，最好还是购买正版吧，官网地址：
https://www.dbschema.com/index.html
DbSchema注册码生成
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