【JSP开发】JSP入门演示和静态包含与动态包含

1.JSP入门演示:

此jsp页面会显示当前时间：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" errorPage="/errors/error.jsp"%>
<%
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>
    <title>JSP入门(输出时间)</title>
  </head>

  <body>
  当前时间值是：
    <%
    	Date date=new Date();
    	String time = date.toLocaleString();

    	out.write(time);
    %>
    <br/>
    <%= time %>

  </body>
</html>

2.静态包含

静态包含是几个JSP页面包含在一个JSP页面中，翻译成的Servlet也是一个

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>include指令</title>
  </head>

  <body>
    <%@include file="/public/head.jsp" %>

    aaaaaaaaaaaaaaaaaaaaaaaaa<br/>

     <%@include file="/public/foot.jsp" %>
  </body>
</html>

3.动态包含

动态包含是几个JSP页面包含在一个JSP页面中，翻译成的Servlet也是多个，只不过是访问时服务器把多个Servlet整合在一起

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>动态包含</title>
  </head>

  <body>
  <%
     request.getRequestDispatcher("/public/head.jsp").include(request,response);
  %>

   bbbbbbbbbbbbbbbbbbbbbb<br/>

    <%
     request.getRequestDispatcher("/public/foot.jsp").include(request,response);
  %>
  </body>
</html>

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