template.merge output an empty file

Hi -

     I am trying to user VelocityEngine.

    Here is my code:

Properties vp = new Properties();
             vp.setProperty("file.resource.loader.path", 
templatesDirectory + "/");

             VelocityEngine ve = new VelocityEngine();

             ve.setProperty(VelocityEngine.RUNTIME_LOG_LOGSYSTEM, 
fysclLogger);
             ve.init(vp);

             VelocityContext context = new VelocityContext();
             context.put("coll", coll);
             context.put("metsArk", metsArk);

             Template template = null;

             try {
                 FileWriter fw = new FileWriter(new File(metsDirectory + 
"/" + metsFileName));

                 template = ve.getTemplate("metsTemplate.vm");

                 template.merge(context, fw);

             } catch(ResourceNotFoundException rnfe) {
                 System.out.println("Resource not found exception trying 
to get template: " + rnfe);
             } catch(ParseErrorException pee) {
                 System.out.println("Parse error exception trying to get 
template: " + pee);
             } catch(MethodInvocationException mie) {
                 System.out.println("Method invocation exception trying 
to get template: " + mie);
             } catch(Exception e) {
                 System.out.println("Exception trying to get template: " 
+ e);
             }

Here is my template (reduced for debugging):

  OBJID="${metsArk}"
  LABEL="${coll.getTitle()}"

And here is the logging output:

Initializing Velocity, Calling init()...
*******************************************************************
Starting Apache Velocity v1.7 (compiled: 2010-11-19 12:14:37)
RuntimeInstance initializing.
Default Properties File: 
org/apache/velocity/runtime/defaults/velocity.properties
Default ResourceManager initializing. (class 
org.apache.velocity.runtime.resource.ResourceManagerImpl)
ResourceLoader instantiated: 
org.apache.velocity.runtime.resource.loader.FileResourceLoader
FileResourceLoader : initialization starting.
Do unicode file recognition:  false
FileResourceLoader : adding path '/data/apps/fysclmgr/web/templates/'
FileResourceLoader : initialization complete.
ResourceCache: initialized (class 
org.apache.velocity.runtime.resource.ResourceCacheImpl) with class 
java.util.Collections$SynchronizedMap cache map.
Default ResourceManager initialization complete.
Loaded System Directive: org.apache.velocity.runtime.directive.Stop
Loaded System Directive: org.apache.velocity.runtime.directive.Define
Loaded System Directive: org.apache.velocity.runtime.directive.Break
Loaded System Directive: org.apache.velocity.runtime.directive.Evaluate
Loaded System Directive: org.apache.velocity.runtime.directive.Literal
Loaded System Directive: org.apache.velocity.runtime.directive.Macro
Loaded System Directive: org.apache.velocity.runtime.directive.Parse
Loaded System Directive: org.apache.velocity.runtime.directive.Include
Loaded System Directive: org.apache.velocity.runtime.directive.Foreach
Created '20' parsers.
Velocimacro : initialization starting.
Velocimacro : "velocimacro.library" is not set.  Trying default library: 
VM_global_library.vm
Velocimacro : Default library not found.
Velocimacro : allowInline = true : VMs can be defined inline in templates
Velocimacro : allowInlineToOverride = false : VMs defined inline may NOT 
replace previous VM definitions
Velocimacro : allowInlineLocal = false : VMs defined inline will be 
global in scope if allowed.
Velocimacro : autoload off : VM system will not automatically reload 
global library macros
Velocimacro : Velocimacro : initialization complete.
RuntimeInstance successfully initialized.
Velocity Engine initialized
ResourceManager : found metsTemplate.vm with loader 
org.apache.velocity.runtime.resource.loader.FileResourceLoader


The result is always the same, the output file is empty.


And ideas about what I can try?







-- Garey Mills Library Systems Office UC Berkeley