In a JSP file , how to call a Scriptlet code within a javascript

Question

I have a static scriptlet code which works fine. I want to call this static code when the user clicks on a button in the html page. So is it possible to create a function in javascript, which is called when the user clicks the html button and inside the function the scriptlet code be placed?

Please give the exact code of how to achieve this

My static scriptlet code is as follows:

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%@ page import="java.io.*" %>
<%@ page import="com.lowagie.text.Document" %>
<%@ page import="com.lowagie.text.Element" %>
<%@ page import="com.lowagie.text.html.simpleparser.HTMLWorker" %>
<%@ page import="com.lowagie.text.html.simpleparser.StyleSheet" %>
<%@ page import="com.lowagie.text.pdf.PdfWriter" %>
<%@ page import="com.lowagie.text.pdf.codec.Base64" %>
<%@ page import="java.util.ArrayList" %>
<%
    // This scriptlet declares and initializes "date"
    Document pdfDocument = new Document();
        Reader htmlreader = new BufferedReader(new InputStreamReader(
                                 new FileInputStream("E:\\test.html")
                                ));


        htmlreader.read();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PdfWriter.getInstance(pdfDocument, baos);
        pdfDocument.open();

        StyleSheet styles = new StyleSheet();
        styles.loadTagStyle("body", "font", "Bitstream Vera Sans");
        ArrayList arrayElementList = HTMLWorker.parseToList(htmlreader, styles);
        for (int i = 0; i < arrayElementList.size(); ++i) {
            Element e = (Element) arrayElementList.get(i);
            pdfDocument.add(e);
        }
        pdfDocument.close();



        byte[] bs = baos.toByteArray();
        String pdfBase64 = Base64.encodeBytes(bs); //output
        File pdfFile = new File("E:\\test.pdf");
        FileOutputStream output = new FileOutputStream(pdfFile);
        output.write(bs);
        output.close();
    System.out.println( "Evaluating date now" );
    java.util.Date date = new java.util.Date();
%>
Hello!  The time is now
<%
    // This scriptlet generates HTML output
    out.println( String.valueOf( date ));
%>
</body>
</html>

Jon Adams · Accepted Answer · 2012-03-10 20:26:40Z

1

is it possible to create a function in javascript which is called when the 
user clicks the html button

Answer: Yes

and inside the function the scriptlet code be placed?

Answer: No

The solution is to make use of Javascript ajax. If you are using jquery make use of jquery ajax.

edited Mar 10, 2012 at 20:26

Jon Adams

25.3k18 gold badges85 silver badges122 bronze badges

answered Mar 3, 2012 at 18:55

dku.rajkumar

18.6k8 gold badges43 silver badges58 bronze badges

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