Question

I want to get string from column no. 4 from my database to check user privileges.

Can I use rs.getString(index) to get data from column no.4?
I want to check user´s privileges…so if the column data is equal 4, the page will be redirected to AdminControlPanel.jsp
BUT, this code doesn´t work 🙁

String user=request.getParameter("login");
String pass=request.getParameter("password");
 Class.forName("com.mysql.jdbc.Driver").newInstance();
    Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/android","root","root");  
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from users where login='"+user+"' and password='"+pass+"'");
           String p = rs.getString(4);                   
           int count=0;
           while(rs.next()){
           count++;
          }
      if(count>0 && p == "4"){
             // out.println(rs);
                           response.sendRedirect("AdminControlPanel.jsp");
                      }
          else{
               out.println("aaa");
               response.sendRedirect("#");
           }
        }
                 catch(Exception e){
    System.out.println(e);
}

Answer 1

you are comparing two String objects rather than checking the values in the String.

just change the code to p.equals(“4”) and try.