ServletContext(Application)初始化配置文件

ServletContext(Application)初始化配置文件：

package com.wansha.servlet;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

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

public class InitServlet extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doGet(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
	}
	
	@Override
	public void init(ServletConfig config) throws ServletException {
		Properties ps = new Properties();
		ServletContext servletContext = config.getServletContext();
		try {
			InputStream is = servletContext.getResourceAsStream("WEB-INF/message.properties");
			ps.load(is);
			servletContext.setAttribute("ps", ps);
			is.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}