一 pageContext对象 二 pageContext对象常用方法 三 pageContext方法测试 代码1： %@ page language = "java" import = "java.util.*,java.text.*" contentType = "text/html; charset=utf-8" % % String path = request.getContextPath();
二 pageContext对象常用方法
三 pageContext方法测试 代码1： <%@ page language = "java" import = "java.util.*,java.text.*" contentType = "text/html; charset=utf-8" %> <% 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 'index.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"> --> </ head > < body > < h1 > session内置对象 </ h1 > < hr > <% SimpleDateFormat sdf = new SimpleDateFormat( "yyyy年MM月dd日 HH:mm:ss" ); Date d = new Date(session.getCreationTime()); session.setAttribute( "username" , "admin" ); session.setAttribute( "password" , "123456" ); session.setAttribute( "age" , 20); //设置当前session最大生成期限单位是秒 //session.setMaxInactiveInterval(10);//10秒钟 %> Session创建时间： <%= sdf.format(d) %> < br > Session的ID编号： <%= session.getId() %> < BR > 从Session中获取用户名： <%= session.getAttribute( "username" ) %> < br > < a href = "session_page2.jsp" target = "_blank" > 跳转到Session_page2. jsp </ a > </ body > </ html > 代码2： <%@ page language = "java" import = "java.util.*,java.text.*" contentType = "text/html; charset=utf-8" %> <% String path = request.getContextPath(); String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ; Date date = new Date(); SimpleDateFormat sdf = new SimpleDateFormat( "yyyy年MM月dd日" ); String s = sdf.format(date); out.println(s+ "<br>" ); %> 代码3： <%@ page language = "java" import = "java.util.*" contentType = "text/html; charset=utf-8" %> <% 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 'index.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"> --> </ head > < body > < h1 > pageContext内置对象 </ h1 > < hr > 用户名是： <%= pageContext.getSession().getAttribute( "username" ) %> < br > <% //跳转到注册页面 //pageContext.forward("reg.jsp"); pageContext.include( "include.jsp" ); %> </ body > </ html > 验证结果：
四 config对象