<%@page import="javax.servlet.annotation.MultipartConfig"%>
<%@page import="java.sql.*"%>
<%@page import="java.io.InputStream"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>


<%
    request.setCharacterEncoding("UTF-8");
    Part p = request.getPart("image");
    InputStream inputStream = null;
    if (p != null) {
        inputStream = p.getInputStream();
    }

    String driver = "com.mysql.jdbc.Driver";
    String url = "jdbc:mysql://localhost:3306/test42";
    Class.forName(driver);
    Connection con = DriverManager.getConnection(url, "root", "1234");

    String sqlString = "INSERT INTO test42.images items(idimages) values(" + inputStream + ");";

    String msg = p.toString();

%>

<form method="post" action="mainPage.jsp" enctype="multipart/form-data">
                choose file :
                <input type="file" name="image" />

                <input type="submit" value="submit">
            </form>

java.lang.IllegalStateException: Request.getPart is called without multipart configuration. Either add a @MultipartConfig to the servlet, or a multipart-config element to web.xml