Grails Programmer: How to output CSV from a Grails 3 Controller. 20 / 1 Reply def outs = Stream. = (). response. Should I invoke a flush or a close on the outpustream at the end of the closure? () or GRAILS IllegalStateException error for return the Stream # Closed. graemerocher opened this Issue on Oct 29, ยท 0 comments.

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Grails Programmer : How to output CSV from a Grails 3 Controller

Email Required, but never shown. You may need to add additional method signatures so that they can be statically compiled but the concept is the same. The file attribute can be assigned a byte[]FileInputStream or String value. If we run the app and call the controller we will download a CSV file as this: A weekly curated email newsletter about the Groovy ecosystem.

Thanks If you are using Grails 2, just change the setConfiguration part to this: Responxe forum by Nabble. If the answer is yes, subscribe to Groovy Calamari. I should add that I had tried a similar approach following another StackExchange post maybe yours?

Grails User (Old Archive) – Proper way to stream file from controller

My code is only a little different, in that I don’t set the “Content-disposition” header and flush afterwards. We have fixed this problem in our applications by adding a static utility method:. Other than that, so far things are ok. If the byte arrays in your examples are large, or if the ‘download’ action is called frequently, you could run into problems. Are you facing any problems with that? A I will recommend to put the logic fetching iutputstream lines in a Service.


C If you want the file to download you need to setup the Content-disposition header. In reply to this post by Lauk Daniel. If that’s the case, copy from stream to stream.

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I wrote a post; in Spanish though. CSV is probably respones best format to export your data from a Grails App.

On Wed, Jul 30, at 9: Generally things are working but today we ran across a problem that seems to be shared by others but I cannot find a solution. I have found it beneficial to use some of the new ‘Groovy’ methods on the File class in particular the File.


A CSV file is easy to import in Excel. Does anyone have any suggestions for me? Handler dispatch failed; nested exception is java. Sign up using Email and Password. I have a Grails application that I have recently upgraded to 3. We can use the fileName respinse to set a filename for the binary content. Should I invoke a flush or a close on gtails outpustream at the end of the closure?

Grails Programmer : How to output CSV from a Grails 3 Controller | Sergio del Amo

GrailsConfigurationAware import static org. We have fixed this problem in our applications by adding a static utility method: Then we use the render method and the file and contenType attributes to render the image in a browser:. On Wed, Jul 30, at 2: Grails will try to determine the content type for files, but we can also use the contentType attribute to set the content type.

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