Como descobrir o tamanho de um arquivo (upload) com VRaptor

1 de julho de 2011 15 respostas

Rafael_Guerreiro 1 de julho de 2011

Fala pessoal.

Eu estou precisando saber como que eu vejo o tamanho do arquivo (de preferencia antes de fazer o upload) e então limitar.

Eu não posso usar o DefaultMultipartConfig pois existem uploads com diferentes tamanhos permitidos.

Será que existe alguma forma de fazer com javascript?

15 Respostas

Lucas_Cavalcanti 1 de jul. de 2011

vc pode salvar o upload num arquivo (mesmo que temporário) e pedir file.getFileSize() ou coisa do tipo

Rafael_Guerreiro 1 de jul. de 2011

Então não dá para ver antes com javascript?

Se eu pegar o tamanho do byte[] eu consigo o tamanho do arquivo, não?

Existe, também, alguma forma de somente aceitar JPGs?

Lucas_Cavalcanti 1 de jul. de 2011

dá pra usar plugins do jquery de uploads que limitam o tamanho do arquivo

garcia-jj 2 de jul. de 2011

Pelos métodos tradicionais não dá. Isso porque para você saber o tamanho do arquivo precisa enviar para o servidor. E por padrão o Javascript não possui acesso ao filesystem do cliente.

Talvez esses uploaders em Flash possam ter algo que faça isso. A única forma que eu conheço são Applets assinados.

Rafael_Guerreiro 5 de jul. de 2011

É… Eu só consigo verificar o formato do arquivo…

Agora eu estou com um problema um pouco maior. Quando eu coloco arquivos muito grandes (maior que 1MB) aparece a seguinte exception:

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Filter execution threw an exception
root cause

java.lang.NoClassDefFoundError: org/hamcrest/Description
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.reportSizeLimitExceeded(CommonsUploadMultipartInterceptor.java:145)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.intercept(CommonsUploadMultipartInterceptor.java:124)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.FlashInterceptor.intercept(FlashInterceptor.java:83)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ExceptionHandlerInterceptor.intercept(ExceptionHandlerInterceptor.java:71)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ResourceLookupInterceptor.intercept(ResourceLookupInterceptor.java:69)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.EnhancedRequestExecution.execute(EnhancedRequestExecution.java:23)
	br.com.caelum.vraptor.VRaptor$1.insideRequest(VRaptor.java:92)
	br.com.caelum.vraptor.ioc.spring.SpringProvider.provideForRequest(SpringProvider.java:58)
	br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:89)
root cause

java.lang.ClassNotFoundException: org.hamcrest.Description
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.reportSizeLimitExceeded(CommonsUploadMultipartInterceptor.java:145)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.intercept(CommonsUploadMultipartInterceptor.java:124)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.FlashInterceptor.intercept(FlashInterceptor.java:83)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ExceptionHandlerInterceptor.intercept(ExceptionHandlerInterceptor.java:71)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ResourceLookupInterceptor.intercept(ResourceLookupInterceptor.java:69)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.EnhancedRequestExecution.execute(EnhancedRequestExecution.java:23)
	br.com.caelum.vraptor.VRaptor$1.insideRequest(VRaptor.java:92)
	br.com.caelum.vraptor.ioc.spring.SpringProvider.provideForRequest(SpringProvider.java:58)
	br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:89)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.

Apache Tomcat/6.0.29

Pelo o que diz na exception é por causa do tamanho do arquivo mesmo. Mas como resolver isso? Sendo que preciso aceitar até 50 MB…

Lucas_Cavalcanti 5 de jul. de 2011

class not found exception significa geralmente que está faltando algum jar… no caso o do hamcrest (classe org.hamcrest…).

baixe-o no site do projeto ou dentro do zip do vraptor

Rafael_Guerreiro 5 de jul. de 2011

Qual que é o tamanho padrão do VRaptor? Pois eu acho que parou lá desta vez.

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.util.MissingResourceException: Can't find bundle for base name messages, locale pt_BR
	java.util.ResourceBundle.throwMissingResourceException(Unknown Source)
	java.util.ResourceBundle.getBundleImpl(Unknown Source)
	java.util.ResourceBundle.getBundle(Unknown Source)
	br.com.caelum.vraptor.validator.Validations.&lt;init&gt;(Validations.java:57)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor$1.&lt;init&gt;(CommonsUploadMultipartInterceptor.java:145)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.reportSizeLimitExceeded(CommonsUploadMultipartInterceptor.java:145)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.intercept(CommonsUploadMultipartInterceptor.java:124)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ExceptionHandlerInterceptor.intercept(ExceptionHandlerInterceptor.java:71)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.InstantiateInterceptor.intercept(InstantiateInterceptor.java:48)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.FlashInterceptor.intercept(FlashInterceptor.java:83)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ResourceLookupInterceptor.intercept(ResourceLookupInterceptor.java:69)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.EnhancedRequestExecution.execute(EnhancedRequestExecution.java:23)
	br.com.caelum.vraptor.VRaptor$1.insideRequest(VRaptor.java:92)
	br.com.caelum.vraptor.ioc.spring.SpringProvider.provideForRequest(SpringProvider.java:58)
	br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:89)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.

Apache Tomcat/6.0.29

Lucas_Cavalcanti 5 de jul. de 2011

o tamanho padrão é 2Mb… essa exception tá te pedindo pra criar um arquivo messages.properties no classpath…

Se vc está com a última versão do VRaptor não deveria dar essa exception

Rafael_Guerreiro 5 de jul. de 2011

Eu estou com a 3.3.1…

Lucas_Cavalcanti 5 de jul. de 2011

estranho =(

crie um messages.properties vazio na pasta src

Rafael_Guerreiro 5 de jul. de 2011

Como que eu sobrescrevo o limite máximo padrão?

Rafael_Guerreiro 5 de jul. de 2011

agora o erro mudou... diz que eu não redirecionei o validator... mas eu estou redirecionando...

validator.onErrorRedirectTo(this).formularioNovo();

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

br.com.caelum.vraptor.InterceptionException: There are validation errors and you forgot to specify where to go. Please add in your method something like:
validator.onErrorUse(page()).of(AnyController.class).anyMethod();
or any view that you like.
If you didn't add any validation error, it is possible that a conversion error had happened.
	br.com.caelum.vraptor.interceptor.ExecuteMethodInterceptor.intercept(ExecuteMethodInterceptor.java:71)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:56)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:56)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.LazyInterceptorHandler.execute(LazyInterceptorHandler.java:61)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:56)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.LazyInterceptorHandler.execute(LazyInterceptorHandler.java:61)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ParametersInstantiatorInterceptor.intercept(ParametersInstantiatorInterceptor.java:89)
	br.com.caelum.vraptor.core.LazyInterceptorHandler.execute(LazyInterceptorHandler.java:59)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:56)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.InstantiateInterceptor.intercept(InstantiateInterceptor.java:48)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ExceptionHandlerInterceptor.intercept(ExceptionHandlerInterceptor.java:71)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.multipart.CommonsUploadMultipartInterceptor.intercept(CommonsUploadMultipartInterceptor.java:131)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.FlashInterceptor.intercept(FlashInterceptor.java:83)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.interceptor.ResourceLookupInterceptor.intercept(ResourceLookupInterceptor.java:69)
	br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54)
	br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54)
	br.com.caelum.vraptor.core.EnhancedRequestExecution.execute(EnhancedRequestExecution.java:23)
	br.com.caelum.vraptor.VRaptor$1.insideRequest(VRaptor.java:92)
	br.com.caelum.vraptor.ioc.spring.SpringProvider.provideForRequest(SpringProvider.java:58)
	br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:89)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.

Apache Tomcat/6.0.29

Lucas_Cavalcanti 5 de jul. de 2011

a validação acontece antes de vc usar o uploadedFile?

vc pode criar uma classe @Component que implementa MultipartConfig e configurar os limites

Rafael_Guerreiro 5 de jul. de 2011

não, ela acontece depois que eu recebo tudo… Mas o arquivo q eu tento subir é de 4 MB… Então deve estar parando no validator padrão e tentando redirecionar…

Lucas_Cavalcanti 5 de jul. de 2011

crie a classe que implementa MultipartConfig

Criado 1 de julho de 2011

Ultima resposta 5 de jul. de 2011

Respostas 15

Participantes 3

15 Respostas

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