ServletOutputStream

[Mukunthan Shanmuganathan]

Hi Guys!

Can anybody please help me to write and test a small ServletOutputStream example.

Thank You. :roll:

[Ben Souther]

Mukunthan Shanmuganathan,

Welcome to the ranch.

What type of help are you looking for?
It's a little odd to want to write a ServletOutputStream program without first having a problem to solve, unless it's a homework assignment.

Is this a homework assignment?

[Mukunthan Shanmuganathan]

Hi Thank you!

This what I did.

package com.mypack;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class MyFirstServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

byte[] bytearr = new byte[6];

for(int i=0 ; i < bytearr.length ; i++) {
bytearr[i] =(byte) i;
}

ServletOutputStream out = response.getOutputStream();

for(int j=0 ; j < bytearr.length ; j++) {
out.write(bytearr[j]);
}

}

}

When I deploy and run I get a blank screen. Why?

Since I'm new to WCD, kind enough to bear me.

Thank You.

[David O'Meara]

There are a couple of things that you are missing.

Firstly, when you send something to the browser, it needs to be something that the browse is able to display. You're code responds with 6 bytes of data, but there is a good chance you just managed to confuse the browser

The second thing is called a 'mime type', which is like a hint about what the content is. Browsers can use other tricks to find the data type, but it is better if you pass that information yourself.

ServletOutputStream out = response.getOutputStream();
response.setContentType("text/html"); // treat the content as HTML
out.print("Hello World!");

[Mukunthan Shanmuganathan]

Dear Ben Souther, David O'Meara!

I've got it.

Thank you.