List All Init Parameters in Servlet : Introduction « Servlet « Java Tutorial

1. Java Tutorial
2. Servlet
3. Introduction

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

public class MyServlet extends HttpServlet {

  public void service(ServletRequest req, ServletResponse res)
                             throws ServletException, IOException {
    res.setContentType("text/plain");
    PrintWriter out = res.getWriter();

    out.println("Init Parameters:");
    Enumeration e = getInitParameterNames();
    while (e.hasMoreElements()) {
      String name = (String) e.nextElement();
      out.println(name + ": " + getInitParameter(name));
    }
  }
}

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
    "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app>
    <servlet><servlet-name>MyServletName</servlet-name>
             <servlet-class>MyServlet</servlet-class>
        <init-param>
            <param-name>
                initial
            </param-name>
            <param-value>
                1000
            </param-value>
            <description>
                The initial value for the counter  <!-- optional -->
            </description>
        </init-param>
             
    </servlet>
    
    <servlet-mapping><servlet-name>MyServletName</servlet-name>
        <url-pattern>/index.html</url-pattern>
    </servlet-mapping>
</web-app>

25.1.Introduction
	25.1.1.	Your First Servlet
	25.1.2.	Setup Servlet Environment
	25.1.3.	Servlet Converter from Kilometers to Miles
	25.1.4.	List All Init Parameters in Servlet
	25.1.5.	Get all Server Related Parameters