Dynamically generate XLS using servlet
To dynamically generate XLS using servlet below are needed:
- Eclipse 3.2 or above (Download eclipse from here) — We are using Eclipse Kepler for this demo
- JDK 1.6 or above (Download from here)
- Tomcat 6 or above (Please follow link to install and configure tomcat in eclipse: Configure and Run Tomcat server in eclipse)
After all set up and configuration you will see below generated XLS sheet:
Please follow below steps:
- Create dynamic web project in eclipse name: GenerateXLSReport (Please use this link if you are not familiar how to create dynamic project in eclipse: Create Dynamic Web Project Eclipse)
- Once you create dynamic project it should look as below structure:
- Create package name com.javahonk inside src folder
- Create servlet class name ReportServlet.java inside com.javahonk package and copy paste below code:
package com.javahonk; import java.io.IOException; import java.util.ArrayList; import java.util.Iterator; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class ReportServlet */ @WebServlet("/ReportServlet") public class ReportServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public ReportServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, * HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("application/vnd.ms-excel"); String reportName = "GenerateXLS_Report_" +System.currentTimeMillis()+".xls"; response.setHeader("Content-disposition", "attachment; " + "filename=" + reportName); ArrayList<String> rows = new ArrayList<String>(); rows.add("First Name"); rows.add("\t"); rows.add("Last name"); rows.add("\t"); rows.add("Test"); rows.add("\n"); for (int i = 0; i < 5; i++) { rows.add("Java"); rows.add("\t"); rows.add("Honk"); rows.add("\t"); rows.add("Success"); rows.add("\n"); } Iterator<String> iter = rows.iterator(); while (iter.hasNext()){ String outputString = (String) iter.next(); response.getOutputStream().print(outputString); } response.getOutputStream().flush(); } }
- Create index.jsp inside WebContent folder and copy paste below code:
<%@ 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>Generate XLS report</title> </head> <body> <form action="ReportServlet"> <input type="submit" value="Generate XLS report"> </form> </body> </html>
- Final project structure will be as below:
- Now we are ready to generate XLS using tomcat server. If you haven’t done tomcat set up in eclipse yet please use this link: Configure and Run Tomcat server in eclipse. Now right click project –>Run As –> Run on server.
- You will see below jsp page:
- Click Generate XLS report. You will see below pop-up with Open, Save and Cancel button. For demo we have clicked Open button to open generated XLS file:
- Once you clicked Open button finally you will see below generated XLS file:
- That’s it dynamically generate XLS using servlet created successfully.
Download GenerateXLSReport
