J2EE Servlet 学习笔记3

来源：互联网发布：yum install什么意思编辑：程序博客网时间：2024/05/16 06:19

<?xml version="1.0" encoding="GBK"?><web-app xmlns="http://java.sun.com/xml/ns/javaee"   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"   version="2.5">         <servlet><servlet-name>welcome_en</servlet-name><servlet-class>org.laotou99.abc.servlet.WelcomeServlet</servlet-class><init-param><param-name>msg</param-name><param-value>Welcome you</param-value></init-param>   </servlet>       <servlet-mapping><servlet-name>welcome_en</servlet-name><url-pattern>/en/welcome</url-pattern>   </servlet-mapping>   <servlet><servlet-name>welcome_zh</servlet-name><servlet-class>org.laotou99.abc.servlet.WelcomeServlet</servlet-class><init-param><param-name>msg</param-name><param-value>欢迎您</param-value></init-param>   </servlet>      <servlet-mapping><servlet-name>welcome_zh</servlet-name><url-pattern>/zh/welcome</url-pattern>   </servlet-mapping>         </web-app>

package org.laotou99.abc.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;//javac -d ..\WEB-INF\classes WelcomeServlet.javapublic class WelcomeServlet extends HttpServlet{public void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException{//req.setCharacterEncoding("gb2312");String user = req.getParameter("user");String welcomeMsg = getInitParameter("msg");resp.setContentType("text/html;charset=gb2312");PrintWriter out = resp.getWriter();out.println("<html><head><title>");out.println("Welcome Page");out.println("</title></head><body>");out.println(welcomeMsg+", "+user);out.println("</body></html>");out.close();}public void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException{doGet(req,resp);}}

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