Calling a ColdFusion page from a JSP page

<%@page import="java.util.*" %>

Imports the java.util package. This contains methods required in the JSP page.

<% request.setAttribute("myvariable", 
"This");%>

Uses the setAttribute method of the JSP request object to set the value of the Request scope variable myVariable.

The JSP page must use all lowercase characters to refer to all request scope variables that it shares with CFML pages. You can use any case on the CFML page, but if you use mixed case to all uppercase on the JSP page, the JSP page will not share it with the ColdFusion page.

<% ((Map)session.getAttribute("myApp"))
.put("myVariable", "is a");%> 

Uses the getAttribute method of the JSP session object to get the myApp object (the Application scope). Casts this to a Java Map object and uses the set method to set the myVariable value.

CFML pages and JSP pages share Session variables independent of the variable name case. The variable on the JSP page can have any case mixture and still share the value with the ColdFusion page. For example, instead of myVariable, you could use MYVARIABLE or myvariable on this line.

<% ((Map)application.getAttribute
("myApp")).put("myVariable",
"test.");%>

Uses the getAttribute method of the JSP application object to get myApp object (the Application scope) and casts it to a Map object. It then sets the value of myVariable in the myApp application scope object.

CFML pages and JSP pages share Application variables independent of the variable name case. The variable on the JSP page can have any case mixture and still share the value with the ColdFusion page. For example, instead of myVariable, you could use MYVARIABLE or myvariable on this line.

<jsp:include page="hello.cfm"> 
    <jsp:param name="name" value="Robert" />
</jsp:include>

Sets the name parameter to Robert and calls the ColdFusion page hello.cfm.

<cfapplication name="myApp"
sessionmanagement="yes">

Specifies the application name as myApp and enables session management. In most applications, this tag is in the Application.cfm page.

<cfoutput>
<h2>Hello #URL.name#!</h2>

Displays the name passed using the jsp:param tag on the JSP page. The parameter name is not case-sensitive.

Request.myVariable:
#Request.myVariable#<br>
Session.myVariable:
#Session.myVariable#<br>
Application.myVariable:
#Application.myVariable#<br>
</cfoutput>

Displays the Request.myVariable, Session. myVariable, and Application.myVariable values. Note that all variable names on CFML pages are case independent.