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https://issues.apache.org/jira/browse/FILEUPLOAD-183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Arkadijovych Muntyanu updated FILEUPLOAD-183:
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Summary: commons-io dependency does not get loaded by maven if
only dependency to commons-fileupload is specified (was: commons-io dependency
does ont get loaded by maven if only dependency to commons-fileupload is
specified)
Affects Version/s: 1.2.1
(was: 1.2)
> commons-io dependency does not get loaded by maven if only dependency to
> commons-fileupload is specified
> --------------------------------------------------------------------------------------------------------
>
> Key: FILEUPLOAD-183
> URL: https://issues.apache.org/jira/browse/FILEUPLOAD-183
> Project: Commons FileUpload
> Issue Type: Bug
> Affects Versions: 1.2.1
> Environment: Maven 2.2.1
> Reporter: Roman Arkadijovych Muntyanu
>
> If commons-fileupload is added as dependency (without commons-io explicitly
> defined) like the following
> {code:xml}
> <dependency>
> <groupId>commons-fileupload</groupId>
> <artifactId>commons-fileupload</artifactId>
> <version>1.2.1</version>
> <scope>compile</scope>
> </dependency>
> {code}
> and fileupload is referenced in the code like
> {code:java}
> // Create a factory for disk-based file items
> FileItemFactory factory = new DiskFileItemFactory();
> // Create a new file upload handler
> ServletFileUpload upload = new ServletFileUpload(factory);
> // Parse the request
> List /* FileItem */ items = upload.parseRequest(request);
> {code}
> then NoClassDefFoundError occurs
> {code:none}
> java.lang.NoClassDefFoundError:
> org/apache/commons/io/output/DeferredFileOutputStream
> at
> org.apache.commons.fileupload.disk.DiskFileItemFactory.createItem(DiskFileItemFactory.java:196)
> at
> org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:358)
> at
> org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126)
> {code}
> The reason is that commons-fileupload artifact has *optional* dependency to
> commons-io in its pom-file
> {code:xml}
> <dependency>
> <groupId>commons-io</groupId>
> <artifactId>commons-io</artifactId>
> <version>1.3.2</version>
> <optional>true</optional>
> </dependency>
> {code}
> Which results in commons-io not being downloaded and added to the project by
> maven.
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