Hi Ersin,
The use of FormParam with "multipart/form-data" has been deprecated
(although i should log such a message to say that!)
The recommended approach is to use the jersey-multipart module:
https://jersey.dev.java.net/nonav/documentation/latest/user-guide.html
#d4e1230
and @FormDataParam:
https://jersey.dev.java.net/nonav/apidocs/latest/contribs/jersey-multipart/com/sun/jersey/multipart/FormDataParam.html
Large parts will be cached to disk.
Paul.
On Mar 24, 2010, at 4:38 PM, Ersin Er wrote:
> Hi,
>
> I have managed to upload file with a bunch of code like the following:
>
> @POST
> @Path("/upload")
> @Consumes("multipart/form-data")
> @Produces("text/plain")
> public String upload(@FormParam("file") File file) {
> return "Done.";
> }
>
> The first question is whether this is a correct way of uploading
> (big) files?
>
> My second question is related to the problem I face with. Although
> this code works fine for small files, I get heap memory exception
> for large files although I have reserved more than enough amount of
> memory such as 2GB. I get the following exception trace:
>
> javax.servlet.ServletException: Servlet execution threw an exception
> </pre></p><p><b>root cause</b> <pre>java.lang.OutOfMemoryError: Java
> heap space
> java.util.Arrays.copyOf(Arrays.java:2882)
>
> java
> .lang
> .AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100)
> java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:
> 515)
> java.lang.StringBuilder.append(StringBuilder.java:189)
>
> com
> .sun
> .jersey.core.util.ReaderWriter.readFromAsString(ReaderWriter.java:159)
>
> com
> .sun
> .jersey
> .core
> .provider
> .AbstractMessageReaderWriterProvider
> .readFromAsString(AbstractMessageReaderWriterProvider.java:111)
>
> com
> .sun
> .jersey
> .core
> .impl
> .provider.entity.BaseFormProvider.readFrom(BaseFormProvider.java:62)
>
> com
> .sun
> .jersey
> .core.impl.provider.entity.FormProvider.readFrom(FormProvider.java:70)
>
> com
> .sun
> .jersey
> .core.impl.provider.entity.FormProvider.readFrom(FormProvider.java:57)
>
> com
> .sun
> .jersey
> .spi.container.ContainerRequest.getEntity(ContainerRequest.java:444)
>
> com
> .sun
> .jersey
> .spi.container.ContainerRequest.getEntity(ContainerRequest.java:453)
>
> com
> .sun
> .jersey
> .server
> .impl
> .model
> .method
> .dispatch.FormDispatchProvider.processForm(FormDispatchProvider.java:
> 93)
>
> com.sun.jersey.server.impl.model.method.dispatch.FormDispatchProvider
> $FormParameterProvider.getInjectableValues(FormDispatchProvider.java:
> 105)
>
> com
> .sun
> .jersey
> .server
> .impl.model.method.dispatch.AbstractResourceMethodDispatchProvider
> $
> EntityParamInInvoker
> .getParams(AbstractResourceMethodDispatchProvider.java:119)
>
> com
> .sun
> .jersey
> .server
> .impl.model.method.dispatch.AbstractResourceMethodDispatchProvider
> $
> TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:
> 147)
>
> com
> .sun
> .jersey
> .server
> .impl
> .model
> .method
> .dispatch
> .ResourceJavaMethodDispatcher
> .dispatch(ResourceJavaMethodDispatcher.java:67)
>
> com
> .sun
> .jersey
> .server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259)
>
> com
> .sun
> .jersey
> .server
> .impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)
>
> com
> .sun
> .jersey
> .server
> .impl.uri.rules.ResourceObjectRule.accept(ResourceObjectRule.java:81)
>
> com
> .sun
> .jersey
> .server
> .impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)
>
> com
> .sun
> .jersey
> .server
> .impl
> .uri
> .rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71)
>
> com
> .sun
> .jersey
> .server
> .impl
> .application
> .WebApplicationImpl._handleRequest(WebApplicationImpl.java:990)
>
> com
> .sun
> .jersey
> .server
> .impl
> .application
> .WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
>
> com
> .sun
> .jersey
> .server
> .impl
> .application
> .WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
>
> com
> .sun
> .jersey.spi.container.servlet.WebComponent.service(WebComponent.java:
> 384)
>
> com
> .sun
> .jersey
> .spi
> .container.servlet.ServletContainer.service(ServletContainer.java:451)
>
> com
> .sun
> .jersey
> .spi
> .container.servlet.ServletContainer.service(ServletContainer.java:632)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>
> I get this exception when I try to upload a file of size about 300MB.
>
> One another note is that I do not yet use jersey-multipart and I do
> not know whether it can help here.
>
> Any suggestions?
>
> --
> Ersin