public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        Enfants enfants = new Enfants();

        //PrintWriter pw = response.getWriter();
        int id = Integer.parseInt(request.getParameter("id"));

    String url = "jdbc:mysql://localhost:3307/suzieloveschildren";
           String username = "root";
           String password = "";
           String driverName = "com.mysql.jdbc.Driver";
           try {
            Class.forName(driverName);
            Connection connection = DriverManager.getConnection(url, username, password);
            String sql = "SELECT Profile_Pic FROM enfants WHERE id=  " + id ;
            System.out.println(sql);
            PreparedStatement stmt = connection.prepareStatement(sql  );
            ResultSet rs = stmt.executeQuery();
            if (rs.next())
            {
              byte barray [] =  rs.getBytes(1);
              response.setContentType("image/png");

              //System.out.println("Base64 data is  " + barray);

              OutputStream img = response.getOutputStream();

              img.write(barray);
              img.flush();
              img.close();

            }
            }
            catch(Exception ex) {

                }
           }

<img style="max-width: 300px;max-height: 300px;" src="ViewEnfants?id=${enfants.id}" />

http://localhost:8080/slc/ViewEnfants?id=223