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From Maurizio Cucchiara <maurizio.cucchi...@gmail.com>
Subject Re: [S2] Struts doesn't upload 0 byte files?
Date Tue, 18 Jan 2011 21:35:32 GMT
My guess is that is more a java thing  (File.renameTo method)
Assuming that you don't need empty files you could use expression validation:

<field name="fileUpload">
		<field-validator type="fieldexpression">
			<param name="expression"><![CDATA[fileUpload.length() > 0]]></param>
			<message>File cannot be empty</message>
		</field-validator>
</field>


2011/1/18 Burton Rhodes <burtonrhodes@gmail.com>:
> Bump.
>
> Has anyone tried to upload an empty file using Struts2/Apache/Tomcat
> configuration - e.g. test.txt with 0 bytes?  I have stepped through
> the FileUploadInterceptor Class and cannot locate why an empty file is
> not uploaded to the "work" directory.  When I upload a file that is 1+
> bytes in size, everything works fine.  This is true for both my Jetty
> development enivronment & Tomcat testing server.  A 0 byte file is not
> NULL, so I wondering why there is an issue.  Anyone experienced this
> or would you be able to test on one of your applications to know if
> I'm crazy or not?  Or is this entirely unrelated to Struts?
>
> Any thoughts are appreciated.
>
> On Mon, Jan 17, 2011 at 5:46 PM, Burton Rhodes <burtonrhodes@gmail.com> wrote:
>> For some reason when a user uploades a file to my Struts application
>> that has a size of "0 bytes", the file is not copied to the work
>> directory of my tomcat server.  Is this a bug or a feature?  Below is
>> a stacktrace of when I tried to upload "test2.txt" with no data (0
>> bytes).  Shouldn't Struts copy the file regardless of the size?  Or is
>> this not related to struts?  Thanks!
>>
>> FATAL: Error uploading transaction attachment.
>> java.io.FileNotFoundException:
>> /var/lib/tomcat6/work/Catalina/localhost/afs/upload__31e58b4_12d9656546d__8000_00000017.tmp
>> (No such file or directory)
>>        at java.io.FileInputStream.open(Native Method)
>>        at java.io.FileInputStream.<init>(FileInputStream.java:137)
>>        at com.afs.util.MyFileUtil.copyFile(MyFileUtil.java:37)
>>        at com.afs.web.action.xaction.XactionAttachmentUploadAction.addFileToXaction(XactionAttachmentUploadAction.java:208)
>>        at com.afs.web.action.xaction.XactionAttachmentUploadAction.upload(XactionAttachmentUploadAction.java:156)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>        at java.lang.reflect.Method.invoke(Method.java:616)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)
>>        at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
>>        at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
>>        at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
>>        at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
>>        at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
>>        at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:314)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:142)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:166)
>>        at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.afs.web.interceptor.SessionInterceptor.intercept(SessionInterceptor.java:57)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at com.afs.web.interceptor.NoCacheInterceptor.intercept(NoCacheInterceptor.java:31)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:314)
>>        at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
>>        at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
>>        at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:485)
>>        at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
>>        at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
>>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
>>        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
>>        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:119)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:109)
>>        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
>>        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
>>        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
>>        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
>>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>        at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:113)
>>        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
>>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>>        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>>        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:465)
>>        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>>        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
>>        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
>>        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
>>        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
>>        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
>>        at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
>>        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
>>        at java.lang.Thread.run(Thread.java:636)
>>
>
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-- 
Maurizio Cucchiara

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