Exporting to Other Formats - JasperReports for Java Developers

Java Reference

In-Depth Information

Notice that for this example, we loaded an already filled report from the file system

and streamed it to the browser as HTML. It is also possible to load a Jasper template,

fill it, then export the resulting report to HTML, and stream it to the browser. To

accomplish this, we would load the Jasper template from the file system, fill it using

the JasperFillManager.fillReport() method, and then export the resulting

JasperPrint object to HTML. The following example is a modified version of the

previous servlet. This new version illustrates this procedure.

package net.ensode.jasperbook;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintWriter;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.util.HashMap;

import javax.servlet.ServletException;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import net.sf.jasperreports.engine.JRException;

import net.sf.jasperreports.engine.JRExporterParameter;

import net.sf.jasperreports.engine.JasperFillManager;

import net.sf.jasperreports.engine.JasperPrint;

import net.sf.jasperreports.engine.export.JRHtmlExporter;

import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;

import net.sf.jasperreports.j2ee.servlets.ImageServlet;

public class HtmlReportServlet2 extends HttpServlet

{

public static final String REPORT_DIRECTORY = "/reports";

protected void doGet(HttpServletRequest request, HttpServletResponse

response) throws ServletException, IOException

{

Connection connection;

String reportName = request.getParameter("reportName");

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