JSP的九大内置/隐式对象、jsp的动态标签、静态包含和动态包含的区别(页码JSP2)

叁歲伎倆 2023-07-18 06:21 7阅读 0赞

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![在这里插入图片描述][20200325175257597.png]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwOTIyODQ1_size_16_color_FFFFFF_t_70 3]

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
    	<% 
    		//使用pageContext向request域存数据
    		request.setAttribute("name","zhangsan");
    		pageContext.setAttribute("name", "sunba");
    		pageContext.setAttribute("name","lisi",PageContext.REQUEST_SCOPE);
    		pageContext.setAttribute("name","wangwu",PageContext.SESSION_SCOPE);
    		pageContext.setAttribute("name","tianqi",PageContext.APPLICATION_SCOPE);
    	%>
    	
    	<%=request.getAttribute("name") %>
    	<%=pageContext.getAttribute("name",PageContext.REQUEST_SCOPE) %>
    	<%=pageContext.getAttribute("name",PageContext.SESSION_SCOPE) %>
    	<%=pageContext.getAttribute("name",PageContext.APPLICATION_SCOPE) %>
    	
    	
    	
    	<%=pageContext.findAttribute("name") %>
    	
    	<%
    		pageContext.getRequest();
    		pageContext.getOut();
    	%>
    </body>
    </html>

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![在这里插入图片描述][20200325175925541.png]  
动态包含  
include1.jsp

include2.jsp

静态包含  
include\_1.jsp

include\_2.jsp

静态包含编译后是两个html页面拼接而成的  
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动态页面编译后不会在一个一面内拼接另一个页面，而是翻译成include语句  
include1.jsp  
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include2.jsp  
![在这里插入图片描述][20200325180923203.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwOTIyODQ1_size_16_color_FFFFFF_t_70 7]  
使用jsp:forward完成转发  
forward1.jsp

forward2.jsp

[(页码JSP1)JSP技术、脚本和注释、page\\include\\taglib指令][JSP1_JSP_page_include_taglib]  
[(页码JSP2)JSP的九大内置/隐式对象、jsp的动态标签、静态包含和动态包含的区别][JSP2_JSP_jsp]

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[20200325175257597.png]: /images/20230528/c962a45f58ea4b1ba6086e927c409934.png
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[20200325175925541.png]: /images/20230528/b7f264fa9b05472a83a8e7356f51e6b3.png
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[20200325180923203.png]: /images/20230528/4e481af825e3455785b70d70eb10ce23.png
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[JSP1_JSP_page_include_taglib]: https://blog.csdn.net/qq_40922845/article/details/105058543
[JSP2_JSP_jsp]: https://blog.csdn.net/qq_40922845/article/details/105078700