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Editorial Team
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Asked: 2026-06-11T23:59:28+00:00

I have the index.jsp page: </head> <body> <form action=HelloWorldServlet method=post> <input class=button type=submit value=load

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I have the index.jsp page:

</head>
<body>
     <form action="HelloWorldServlet" method="post">
        <input class="button" type="submit" value="load list" />
     </form>
</body>
</head>

where i want to run my HelloWorldServlet by clicking the “load list”-button.

public class HelloWorldServlet extends HttpServlet {

    protected void doPost(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        PrintWriter writer = response.getWriter();
        writer.println("Hello, World!");
        writer.close();
    }
}

but instead of “Hello, World!” message, it try to load http://localhost:8080/HelloWorld/HelloWorldServlet page.. what’s the point?

Here is my web.xml:

<!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>hello</servlet-name>
    <servlet-class>HelloWorldServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>hello</servlet-name>
    <url-pattern>/hello</url-pattern>
  </servlet-mapping>
</web-app>
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1 Answer

  1. Editorial Team

    If your servlet is mapped to /hello, then your <form> should be posting to the same URL.

    <form action="hello" method="post">
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