JAVA EE JSP_EL

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Java EE

JSP Java Servlet CSS Cache

http://www.javapassion.com/j2ee/

http://hi.baidu.com/livinggame/blog/item/0118eceffebbd437adafd50d.html

<%@ page isELIgnored="true"%>

表示是否禁用EL语言,TRUE表示禁止.FALSE表示不禁止.JSP2.0中默认的启用EL语言.

登陆用户名和密码后,若密码错误则保留用户名.

package com.lindows.action;

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;

public class login extends HttpServlet {



	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//String name = request.getAttribute("uname").toString();
		String nameString = (String)request.getParameter("uname");
		System.out.println(nameString);
		//request.setAttribute("name", name);
	}



}

web.xml

	<servlet>
		<servlet-name>login</servlet-name>
		<servlet-class>com.lindows.action.login</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>login</servlet-name>
		<url-pattern>/login</url-pattern>
	</servlet-mapping>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page isELIgnored="false" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'login.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
    <script>
    	function funsub()
    	{
    		alert(document.getElementById("uname").value);
    		document.fm.action="<%=request.getContextPath()%>/login";
    		document.fm.submit();
    	}
    </script>
  </head>
  
  <body>
	<form method=get action="/register.jsp"> 
		username:<input type="text" value="username">
	</form>
    <form name="fm" method="post">
    <input type="text" name="uname" >
    <input type="button" value="ok" onclick="funsub()">
    </form>
  </body>
</html>

end

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js tools / framework / firebug | java math

2009-02-21 17:28
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