Simpel Servlet virker ikke...
Hej.Hvad gør jeg forkert? Jeg har dette lille .html program som skulle kalde en lille Servlet, men browseren kan ikke finde Servlet'en. Hjælp, hvad gør jeg forkert? mangler jeg noget?
HTML kode:
<HTML>
<HEAD><TITLE>Random Numbers Page</TITLE></HEAD>
<BODY BGCOLOR="white">
<H1>Random Numbers</h2>
<P>This site will let you pick some random numbers for Lottery, lucky number
or other purposes, all electronically.</P>
<FORM METHOD=POST ACTION="TestServlet">
<H4>How Many Numbers Do You Want Today?</H4>
<INPUT NAME=howmany SIZE=2> (default is 5)
<BR>
<INPUT TYPE="SUBMIT" VALUE="Get YOURS!">
</FORM>
</BODY>
</HTML>
Java Servlet kode:
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Random;
/**
* Servlet implementation class TestServlet
*/
public class TestServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected final int DEFAULT_NUMBER = 5;
/**
* Default constructor.
*/
public TestServlet()
{
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
resp.setContentType("text/html");
PrintWriter out = resp.getWriter( );
// The usual HTML setup stuff.
out.println("<HTML>");
out.println("<HEAD>");
out.println("<BODY BGCOLOR=\"white\">");
// HTML for this page
out.println("<TITLE>Random Numbers</TITLE>");
out.println("<H1>Random Numbers</h2>");
out.println("<P>Here are your personal random numbers,");
out.println("<OL>");
// Figure out how many numbers to print.
int n = DEFAULT_NUMBER;
String num=req.getParameter("howmany");
if (num != null && num.length( ) != 0)
{
try
{
n = Integer.parseInt(num);
}
catch (NumberFormatException e)
{
out.println("<P>");
out.println(num);
out.println(" is too many.</P>");
}
}
// Now actually generate some random numbers.
Random r = new Random( );
for (int i=0; i<n; i++)
{
out.print("<LI>");
out.println(r.nextInt(49));
out.println("</OL>");
// Print a break and a back link.
out.println("<HR></HR>");
out.println("<A HREF=\"index.html\">Back to main Page</A>");
out.println("</HTML>");
}
}
}
