Invoking a servlet from an unix shell script

Question

I have successfully created a servlet that when loaded via a browser takes input values in a form. After hitting "submit" the results are returned to the browser.
Now I would like to create an unix shell script that:
1. takes input values from the command line
2. invokes the servlet that does the necessary processing
3. returns the results (via echo, or in a text file, etc.)
Please give me any clues, hints, directions on
1. how to convert my existing servlet to accommodate a shell script
2. how to invoke the script within the shell script
Please refer me to any existing examples if available.
Thanks,
George

Answer 1

Using the code below as an example I think you are saying I should take the following steps in a java sample program:
1. in a sample program create an Testservlet object -
Testservlet newservlet = new Testservlet();
2. to send input to the servlet execute -
newservlet.doGet( ? , ? );
I'm not sure what the parameters should look like
but I guess one of them is the input value.
3. to get output from the servlet execute -
String results = null;
results = newservlet.doPost( ? , ? );
Again, I'm not sure what the parameters
should look like.
public class TESTservlet extends HttpServlet
String connPool;
public void init(ServletConfig config)
throws ServletException
super.init(config);
connPool = getInitParameter("dataSource");
if (connPool == null) {
System.err.println("This servlet requires a " +
" dataSource initArg." );
public void doPost(HttpServletRequest req,
HttpServletResponse res)
throws ServletException, IOException
// first, set the "content type" header of the response
res.setContentType("text/html");
//Get the response's PrintWriter to return text to the client.
PrintWriter pw = res.getWriter();
pw.println("test");
String testinput = null;
try
testinput = req.getParameter("testinput");
catch (Exception e)
e.printStackTrace();
pw.println("testinput = " + testinput");
finally
pw.close();
public void doGet(HttpServletRequest req,
HttpServletResponse res)
throws ServletException, IOException
res.setContentType("text/html");
PrintWriter pw = res.getWriter();
pw.println("Test Servlet");
putForm(req, pw);
pw.println("</body></html>");
pw.close();
* putForm() writes an HTML form to the response
public void putForm(HttpServletRequest req,
PrintWriter pw)
throws IOException
pw.println("<form action=\"" +
req.getRequestURI() +
"\" method=post>");
pw.println("<p><strong>Test Input: </strong>");
pw.println("<input type=\"text\" " +
"name=\"testinput\" value=\" \" size=12 maxlength=12>");
pw.println("<p><input type=\"submit\" " +
" value=\"Submit Entries\" ");
pw.println("<p><input type=\"reset\" " +
" value=\"Clear Entries\" ");
pw.println("</form>");
} // END OF SERVLET