websphere 部暑 servlet

servlet 如下：
package Servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class HellowServlet extends HttpServlet {


public HellowServlet() {
super();
}

public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

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

response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.println("Hello World <br>");

out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}


public void init() throws ServletException {
// Put your code here
}

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>HellowServlet</servlet-name>
<display-name>This is the display name of my J2EE component</display-name>
<description>This is the description of my J2EE component</description>
<servlet-class>Servlet.HellowServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>HellowServlet</servlet-name>
<url-pattern>/HellowServlet</url-pattern>
</servlet-mapping>
</web-app>

jsp 調用：
<%@ page language="java" import="java.util.*" pageEncoding="BIG5"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<% String url=request.getContextPath() + "/HelloServlet"; %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'index.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</head>

<body>
<form method="post" action="<%=url%>">
input type="submit" name="button1">
</form>
</body>
</html>

爲會麽在websphere 訪問不了servlet 出現http 404 找不到
但在Apache Tomcat 下就可以訪問
不知websphere 下怎樣設置才能訪問servlet?