import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Utils {
/** */
public static String md5(String plainText) { byte[] secretBytes = null;
try { secretBytes = MessageDigest.getInstance("md5").digest( plainText.getBytes()); } catch (NoSuchAlgorithmException e) {
throw new RuntimeException("找不到md5算法");
} String md5code = new BigInteger(1, secretBytes).toString(16); for (int i = 0; i < 32 - md5code.length(); i++) {
md5code = "0" + md5code;
}
return md5code;
}
