<!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>
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