JSP Syntax (10)--

js| Grammar <jsp:include>


Contains a static or dynamic file.






JSP syntax




<jsp:include page= "{relativeurl | <%= expression%>}" flush= "true"/>

Or

<jsp:include page= "{relativeurl | <%= expression%>}" flush= "true" >

<jsp:param name= "ParameterName"

Value= "{parametervalue | <%= expression%>}"/>+

</jsp:include>



Examples




<jsp:include page= "scripts/login.jsp"/>

<jsp:include page= "copyright.html"/>

<jsp:include page= "/index.html"/>



<jsp:include page= "scripts/login.jsp" >

<jsp:param name= "username" value= "jsmith"/>

</jsp:include>







Describe


<jsp:include> elements allow you to include dynamic files and static, and the results of the two include files are different. If the file is just a static file, then this includes simply adding the contents of the containing file to the JSP file, and if the file is dynamic, the included file is also executed by the JSP compiler (which is similar to the ASP)


You can't tell whether a file is dynamic or static from the filename, such as aspcn.asp

It is possible to just contain some information and not perform it. <jsp:include> can process both files at the same time, so you don't need to include them and decide whether the file is dynamic or static.


If the inclusion file is dynamic, you can also pass the parameter name and parameter values with <jsp:param>.






Property




Page= "{relativeurl | <%= expression%>}"
The parameter is a relative path, or an expression that represents a relative path.





Flush= "true"
Here you must use Flush= "true" and you cannot use false values. The default value is False





<jsp:param name= "ParameterName" value= "{parametervalue | <%= expression%>}"/>+
<jsp:param> clause allows you to pass one or more arguments to a dynamic file


You can use multiple <jsp:param> in one page to pass multiple parameters.