Loading csv files on Java web application start

Question

I am writing a java web application using Servlets. It contains two buttons and each one imports some data from some csv files. When a button is pressed the csv files are loaded in again.

Is there any way to load the csv files when the page is iniated? So I will Objectify the csv files to use them later instead of loading them all the time.

Each button is a servlet and it contains this code:

protected void doGet(HttpServletRequest req,HttpServletResponse resp)
            throws ServletException, IOException
    {
        String code=req.getParameter("code");
        String name= req.getParameter("name");

        CSVReader reader=new CSVReader();
        ArrayList<Person> people=reader.readPeople(); // reading from csv files
        reader.readParents();
        reader.readKids();

Dionysis Nt. · Accepted Answer · 2017-06-23 16:13:25Z

2

public class OnStart implements ServletContextListener {
    public void contextInitialized(ServletContextEvent event) {
        //Things for the application to do when it starts
    }

}

and in the web.xml file

<listener>
    <listener-class>OnStart</listener-class>
</listener>

answered Jun 23, 2017 at 16:13

Dionysis Nt.

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