获取servlet初始化参数

package cn.itcast.web.servlet;

import java.io.IOException;
import java.util.Enumeration;

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

//通过servletCOnfig获取servlet配置的初始化参数
//
public class ServletDemo4 extends HttpServlet {

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

        ServletConfig config = this.getServletConfig();

        //获取配置的初始化参数的方式1 
        //String value = config.getInitParameter("charset");

        Enumeration e = config.getInitParameterNames();
        while(e.hasMoreElements()){
            String name = (String) e.nextElement();
            String value = config.getInitParameter(name);
            System.out.println(name + "=" + value);
        }


    }

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






}