在Oracle中使用Java Sources

來源:互聯網
上載者:User

在Oracle中使用Java Sources

Oracle中的MD5加密用法沒有搞明白,加密結果與程式中的結果不一樣,只好將Java中的方法搬過來。
 
 STEP 1:
create or replace and compile java source named md5util as
import java.security.MessageDigest;
public class MD5Util
{
  public static String encrypt(String s)
  {
      char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd','e', 'f'};
       
        try {
                byte[] strTemp = s.getBytes();
                MessageDigest mdTemp = MessageDigest.getInstance("MD5");
                mdTemp.update(strTemp);
                byte[] md = mdTemp.digest();
               
                int j = md.length;
                char str[] = new char[j * 2];
                int k = 0;
                for (int i = 0; i < j; i++) {
                    byte byte0 = md[i];
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
                }
                return new String(str);
        }
        catch (Exception e){
            return null;
        }
  }
}
 
STEP 2:
create or replace function md5encrypt(s varchar2)
return varchar2 as
language java name 'MD5Util.encrypt(java.lang.String) return java.lang.String';
 
STEP 3:
select md5encrypt('ok') from dual

相關文章

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.