[Java] Creating a Microsoft Word Report Easily using Servlet and A Plain HTML Template
Yesterday one of my friend, Edward Barchia, asked me a very simple question, “how can i creating an MSWord Report without using Jasper Report”. Because somehow, jasper report creates a very weird output when exported into Word file (.doc).
One fastest solution is using a html file, and renamed into .doc. Not an elegant solution, but perhaps (at that moment) is the best solution we had.
Okay, so basically what i need is only 2 files, 1 html template and a java servlet files. This is my HTML template, i put it on drie E and name it hello.html
<html>
<head></head>
<body>
Test, hello ${name}
</body>
</html>
And this is my servlet file,
package com.edw.testdownloaddoc.servlet;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.IOUtils;
@WebServlet(name = "downloadServlet", urlPatterns = {"/downloadServlet"})
public class DownloadServlet extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
BufferedReader downloadFile = new BufferedReader(new FileReader("e:\\hello.html"));
FileInputStream inputStream = null;
OutputStream outStream = null;
try {
String s;
StringBuilder sb = new StringBuilder();
while ((s=downloadFile.readLine()) != null) {
if(s.contains("${name}"))
s = s.replace("${name}", "Edwin");
sb.append(s);
}
response.setContentLength((int) sb.toString().length());
response.setContentType("application/msword");
// response header
String nameFile = "hello.doc";
String headerKey = "Content-Disposition";
String headerValue = String.format("attachment; filename=\"%s\"",nameFile);
response.setHeader(headerKey, headerValue);
// Write response
outStream = response.getOutputStream();
IOUtils.write(sb.toString(), outStream);
} catch (Exception e) {
e.printStackTrace();
} finally{
IOUtils.closeQuietly(downloadFile);
IOUtils.closeQuietly(inputStream);
IOUtils.closeQuietly(outStream);
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
}
Oh, and before i forgot, this is my pom.xml dependencies
<dependencies> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>javax</groupId> <artifactId>javaee-web-api</artifactId> <version>7.0</version> <scope>provided</scope> </dependency> </dependencies>
This is the final output looks like,
2 Comments
Manjunathimagin
about 3 years agoHi Edwin , I am compiling above java program as "javac DownloadServlet.java" then I am getting errors like 1.) Cannot find the symbol (example : HTTPServlet request not found ) 2.) Package does not exist ( IOUtils does not exists ) please help me to solve the issue. Thank You
Replyedwin
about 3 years agoHi Manju, you can add commons-io on Maven pom.xml, it solve IOUtils problem as for HTTPServlet, it suppose to be automatically added when selecting java web project