Re: Problem using JavaLoader with Railo: No matching Method/Function for Struct.iterator() found

[Barnaby Relph]

I'm sure you're already aware, but railo 4 ships with POI 3.8. I was using java loader in railo 3.3 but switched to using the built in POI in 4.0.

On 19 Mar 2013 13:04, "Ron Stewart" <ron.s...@gmail.com> wrote:

I'm clearly doing something wrong... I'm trying to use JavaLoader to load the Apache POI jars in a simple test file running under Railo 4.0.4.001 and failing miserably. I'm new to using JavaLoader, so I'm sure the problem is something really simple on my end...

Consider the following code:

<cfscript>

variables.jarsPaths = ArrayNew(1);

variables.jarPaths[1] = ExpandPath("poi/poi-3.9-20121203.jar");

variables.jl = CreateObject("component", "javaloader.JavaLoader").init(variables.jarPaths);

</cfscript>

Running it generates the following error:

Railo 4.0.4.001 Error (expression)
Message	No matching Method/Function for Struct.iterator() found
Stacktrace	The Error Occurred in  /Users/ron/Sites/local/www/javaloader/JavaLoader.cfc: line 205 203: <cffunction name="loadClasses" hint="loads up the classes in the system" access="private" returntype="void" output="false"> 204: <cfscript> 205: var iterator = getClassLoadPaths().iterator(); 206: var file = 0; 207: var classLoader = 0;  called from/Users/ron/Sites/local/www/javaloader/JavaLoader.cfc: line 51 49: ensureNetworkClassLoaderOnServerScope(); 50:  51: loadClasses(); 52:  53: if(structKeyExists(arguments, "sourceDirectories") AND ArrayLen(arguments.sourceDirectories))  called from/Users/ron/Sites/local/www/jltest.cfm: line 4 2: variables.jarsPaths = ArrayNew(1); 3: variables.jarPaths[1] = ExpandPath("poi/poi-3.9-20121203.jar"); 4: variables.jl = CreateObject("component", "javaloader.JavaLoader").init(variables.jarPaths); 5: </cfscript>
Java Stacktrace	No matching Method/Function for Struct.iterator() found    at railo.runtime.reflection.Reflector.throwCall(Reflector.java:831):831    at railo.runtime.reflection.Reflector.callMethod(Reflector.java:797):797    at railo.runtime.type.util.MemberUtil.call(MemberUtil.java:74):74    at railo.runtime.type.util.StructSupport.call(StructSupport.java:236):236    at railo.runtime.util.VariableUtilImpl.callFunctionWithoutNamedValues(VariableUtilImpl.java:723):723    at railo.runtime.PageContextImpl.getFunction(PageContextImpl.java:1506):1506    at javaloader.javaloader_cfc$cf._1(/Users/ron/Sites/local/www/javaloader/JavaLoader.cfc:205):205    at javaloader.javaloader_cfc$cf.udfCall(/Users/ron/Sites/local/www/javaloader/JavaLoader.cfc):-1    at railo.runtime.type.UDFImpl.implementation(UDFImpl.java:103):103    at railo.runtime.type.UDFImpl._call(UDFImpl.java:371):371    at railo.runtime.type.UDFImpl.call(UDFImpl.java:284):284    at railo.runtime.type.scope.UndefinedImpl.call(UndefinedImpl.java:775):775    at railo.runtime.util.VariableUtilImpl.callFunctionWithoutNamedValues(VariableUtilImpl.java:723):723    at railo.runtime.PageContextImpl.getFunction(PageContextImpl.java:1506):1506    at javaloader.javaloader_cfc$cf._1(/Users/ron/Sites/local/www/javaloader/JavaLoader.cfc:51):51    at javaloader.javaloader_cfc$cf.udfCall(/Users/ron/Sites/local/www/javaloader/JavaLoader.cfc):-1    at railo.runtime.type.UDFImpl.implementation(UDFImpl.java:103):103    at railo.runtime.type.UDFImpl._call(UDFImpl.java:371):371    at railo.runtime.type.UDFImpl.call(UDFImpl.java:284):284    at railo.runtime.ComponentImpl._call(ComponentImpl.java:607):607    at railo.runtime.ComponentImpl._call(ComponentImpl.java:490):490    at railo.runtime.ComponentImpl.call(ComponentImpl.java:1781):1781    at railo.runtime.util.VariableUtilImpl.callFunctionWithoutNamedValues(VariableUtilImpl.java:723):723    at railo.runtime.PageContextImpl.getFunction(PageContextImpl.java:1506):1506    at jltest_cfm$cf.call(/Users/ron/Sites/local/www/jltest.cfm:4):4 ... (snipped)

I'd be grateful if someone could point out what I'm doing wrong...

Thanks in advance.

-- 

/ron

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[Ron Stewart]

Yeah, I'm aware... I'm actually trying to work around a different problem at this point and am trying to prototype a solution, but got stuck right out of the gate.

[Leigh]

> variables.jarsPaths = .... > variables.jarPaths[1] = .... There is a typo in the variable name after the first line. So you are actually passing a structure into javaLoader.init() not an array.  Make it "jarPaths" all the way through and it will work. -Leigh

[Ron Stewart]

GAH! Thank you, Leigh. Talk about embarrassing...

[Leigh]

Haha, no worries. I did not catch it right off the bat either... despite seeing "STRUCT.iterator()" ;-) -Leigh

[Ron Stewart]

Now, I just need to find a way to delete this entire thread and crawl back under my rock...