<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>注册</title> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="this is my page"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> <form method="post" action="/ServletOne/registered.do"> <table width="400px" height="300px"> <tr> <td align="right">用户名：</td> <td><input type="text" name="username"/></td> <tr> <tr> <td align="right">密码：</td> <td><input type="password" name="passwd"/></td> <tr> <tr> <td colspan="2" align="center"><input type="submit" value="注册"/></td> </tr> </table> </form> </body> </html>
package registered; import java.io.IOException; import java.io.PrintWriter; import java.util.Enumeration; 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 RegisteredServlet extends HttpServlet { public void init() throws ServletException { ServletConfig scf=this.getServletConfig(); ServletContext sct=this.getServletContext(); //获取init配置参数指定参数 config jack System.out.println("config "+scf.getInitParameter("name")); //获取整个init配置参数数组 Enumeration name Enumeration age Enumeration e=scf.getInitParameterNames(); while(e.hasMoreElements()){ System.out.println("Enumeration "+e.nextElement().toString()); } //获取context-param参数值 context ServletContextValue System.out.println("context "+sct.getInitParameter("ServletContextName")); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("DoGet()"); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("DoPost()"); String name=request.getParameter("username"); String passwd=request.getParameter("passwd"); PrintWriter out=response.getWriter(); out.write("username="+name); out.write("<br/>"); out.write("passwd="+passwd); } }
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>ServletOne</display-name> <context-param> <param-name>ServletContextName</param-name> <param-value>ServletContextValue</param-value> </context-param> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!--配置时一律小写 --> <servlet> <servlet-name>Servlet01</servlet-name> <servlet-class>servlet_1121.Servlet01</servlet-class> </servlet> <servlet-mapping> <servlet-name>Servlet01</servlet-name> <url-pattern>/s1</url-pattern> </servlet-mapping> <!-- 注册 --> <servlet> <servlet-name>RegisteredServlet</servlet-name> <servlet-class>registered.RegisteredServlet</servlet-class> <init-param> <param-name>name</param-name> <param-value>jack</param-value> </init-param> <init-param> <param-name>age</param-name> <param-value>20</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>RegisteredServlet</servlet-name> <url-pattern>/registered.do</url-pattern> </servlet-mapping> </web-app>