August 2001
Intermediate to advanced
976 pages
38h 8m
English
Content preview from Programming ColdFusionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Invoking Java Servlets
The CFSERVLET tag can
invoke a Java servlet from within a ColdFusion template. The
CFSERVLET tag requires Allaire’s JRun
software be installed in order to work. For more information on JRun,
see Allaire’s web site at http://www.allaire.com.
Assuming you already have JRun installed, invoking a servlet is a
matter of calling the CFSERVLET tag in your
template. Attributes and parameters can be passed to the Java servlet
by nesting CFSERVLETPARAM tags within the
CFSERVLET tag. Example 23-7 shows
the syntax for calling a servlet and passing it parameters.
Example 23-7. Invoking a Java Servlet with CFSERVLET
<CFSERVLET JRUNPROXY="127.0.0.1:51000" CODE="MyServlet" TIMEOUT="90" DEBUG="Yes" WRITEOUTPUT="No"> <!--- pass attributes. Each VARIABLE represents a variable created in ColdFusion ---> <CFSERVLETPARAM NAME="parString" VARIABLE="MyString" TYPE="STRING"> <CFSERVLETPARAM NAME="parDouble" VARIABLE="MyReal" TYPE="REAL"> <CFSERVLETPARAM NAME="parDate" VARIABLE="MyDate" TYPE="DATE"> <CFSERVLETPARAM NAME="parInt" VARIABLE="MyInt" TYPE="INT"> <CFSERVLETPARAM NAME="parBool" VARIABLE="MyBool" TYPE="BOOL"> <CFSERVLETPARAM NAME="parQuery" VARIABLE="MyQuery"> <CFSERVLETPARAM NAME="parStruct" VARIABLE="MyStruct"> <CFSERVLETPARAM NAME="parArray" VARIABLE="MyArray"> <!--- pass parameter ---> <CFSERVLETPARAM NAME="attString" VALUE="Hello World"> </CFSERVLET> <!--- output the text returned from the servlet to the browser ---> <CFOUTPUT> #CFServlet.Output# </CFOUTPUT> <HR> <!--- ...
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