Hello,
I would like to upload a file using a tapestry form. I have followed the
example presented here:
http://tapestry.apache.org/tapestry5/tapestry-upload/
HTML :
<t:form>
<t:errors/>
<input t:type="upload" t:id="file" validate="required"/>
<br/>
<input type="submit" value="Upload"/>
</t:form>
JAVA :
public class UploadExample
{
private UploadedFile _file;
public UploadedFile getFile()
{
return _file;
}
public void setFile(UploadedFile file)
{
_file = file;
}
public void onSuccess()
{
File copied = new File("/my/file/location/" +
_file.getFileName());
_file.write(copied);
}
}
But when I try to access the page, I get a java.lang.NullPointerException.
And I don’t understand which variable should be initialized.
I used FileUpload 1.2
org.apache.tapestry.ioc.internal.util.TapestryException
location
classpath:… / UploadExample.html, line 13, column 65
<body>
<t:form>
<t:errors/>
<input t:type="upload" t:id="file" validate="required"/>
<br/>
<input type="submit" value="Upload"/>
</t:form>
</body>
java.lang.NullPointerException
Stack trace
•
org.apache.tapestry.upload.components.Upload.beginRender(Upload.java:146)
• org.apache.tapestry.upload.components.Upload.beginRender(Upload.java)
•
org.apache.tapestry.internal.structure.ComponentPageElementImpl$10$1.run(ComponentPageElementImpl.java:345)
•
org.apache.tapestry.internal.structure.ComponentPageElementImpl.invoke(ComponentPageElementImpl.java:931)
•
org.apache.tapestry.internal.structure.ComponentPageElementImpl.access$100(ComponentPageElementImpl.java:69)
• ……
Does someone knows how to solve this ?
Thank you very much,
Martin
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