AES_ENCRYPT與MySQL Server 5.5

Question

我試圖使用准備好的語句以加密格式將數據插入MySQL。 但我收到此錯誤。 我認為我的查詢是正確的。

    Connection con=null;
    PreparedStatement psmt1=null;

    String tit=request.getParameter("tit");
    String min=request.getParameter("minvalue");
    String max=request.getParameter("maxvalue");
   String disc=request.getParameter("disc");
    System.out.println(tit);
    String [] title=tit.split(":");

   try{
   con=databasecon.getconnection();
  psmt1=con.prepareStatement("insert into medication(tid,titname,minvalue,maxvalue,disc) values(AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'))");

psmt1.setString(1,title[0]);
psmt1.setString(2,title[1]);
psmt1.setString(3,min);
psmt1.setString(4,max);
psmt1.setString(5,disc);
psmt1.executeUpdate();
}
catch(Exception ex)
{
out.println("Error in connection : "+ex);
}

下面是我的連接類

package databaseconnection;
import java.sql.*;

public class databasecon
{
    static Connection con;
    public static Connection getconnection()
    {


        try
        {
            Class.forName("com.mysql.jdbc.Driver"); 
            con = DriverManager.getConnection("jdbc:mysql://localhost:3306/cam","root","root");
        }
        catch(Exception e)
        {
            System.out.println("class error");
        }
        return con;
    }

}

最后的錯誤是

Error in connection : java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'maxvalue,disc) values(AES_ENCRYPT('6', 'key'),AES_ENCRYPT('systolic bp', 'key'),' at line 1

根據我的開發人員的同等要求，我正在發布我的餐桌擺設

Answer 1

我不知道為什么會這樣，但是您需要將字節數組作為第二個參數傳遞給MySQL的AES_ENCRYPT ：

psmt1 = con.prepareStatement("insert into medication(tid,titname,minvalue,maxvalue,disc) values(AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'),AES_ENCRYPT(?, 'key'))");

byte[] keyBytes = "key".getBytes();
psmt1.setString(1, title[0]);
psmt1.setBytes(2, keyBytes);
psmt1.setString(3, title[1]);
psmt1.setBytes(4, keyBytes);
psmt1.setString(5, min);
psmt1.setBytes(6, keyBytes);
psmt1.setString(7, max);
psmt1.setBytes(8, keyBytes);
psmt1.setString(9, disc);
psmt1.setBytes(10, keyBytes);
psmt1.executeUpdate();

我說我沒有解釋，因為MySQL文檔暗示AES_ENCRYPT兩個參數都是字符串。 我本人會犯這個錯誤。