代码：
import org.springframework.security.crypto.password.PasswordEncoder;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Utils implements PasswordEncoder {
/**
* 使用md5的算法进行加密
*/
public static String md5(String plainText) {
byte[] secretBytes = null;
try {
secretBytes = MessageDigest.getInstance("md5").digest(
plainText.getBytes());
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException("没有md5这个算法！");
}
String md5code = new BigInteger(1, secretBytes).toString(16);// 16进制数字
// 如果生成数字未满32位，需要前面补0
for (int i = 0; i < 32 - md5code.length(); i++) {
md5code = "0" + md5code;
}
return md5code;
}
public static void main(String[] args) {
System.out.println(md5("1234"));
}
@Override
public String encode(CharSequence charSequence) {
return null;
}
@Override
public boolean matches(CharSequence charSequence, String s) {
return false;
}
}
Original: https://www.cnblogs.com/Mayday-zhou/p/16313612.html
Author: Mayday-zhou
Title: DM5加密的工具类
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