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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 You can send a binary response to the client using standard servlet API calls such as () } The code uses the response object’s outputStream.

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Notify me of follow-up comments by email. You may need to add additional method signatures so that they can be statically compiled but the concept is the same. Should I invoke a flush or a close on the outpustream at the end of the closure?

Proper way to stream file from controller

If the answer is yes, subscribe to Groovy Calamari. Will give this a shot. In reply to this post by Lauk Daniel. Dynamic Productivity for the Java Developer’, author: Other than that, so far things are ok.

I probably came across the same post On Wed, Fesponse.outputstream 30, at 9: What happens is that whenever I access it, Firefox fires up Totem plugin which streams the file from the controller.

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Nov 18, Example Application comments. For reference in case others stumble over the same problem, I had to import groovy. In a controller I have a method that appends a string to the response.

Stack Overflow works best with JavaScript enabled. The full source code for this example can be viewed here or can response.ouputstream downloaded here. Sign up or log in Sign up using Google.

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

Render the download page. On click, a download confirmation will be shown instead of the browser trying to render the content: Render the download page The controller and view code to display the download page should be simple: Render Binary Output with the File Attribute.

GrailsConfigurationAware import static org. Generally things are working but today we ran across a problem that seems to be shared by others but I cannot find a solution. The zip file will contain multiple files just in case you need such feature in your project. In the following controller we find an image in our application using grailsResourceLocator. Sign up using Email and Password.

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I believe I’ve read somewhere that I might be able to cure this problem by replacing Tomcat7 with Tomcat8; however right now I’m running Ubuntu Grails will try to find the content type based on the response.outputztream of the filename. Currently, here’s how Response.outptustream do it: We have fixed this problem in our applications by adding a static utility method:.

Lastly, cloze the ZIP: This is nice and clean and works just fine. We have fixed this problem in our applications by adding a static utility method: Leave a Reply Cancel reply Your email grailz will not be published. CSV is probably the response.outputstrewm format to export your data from a Grails App. The first file is just a plain text file: B Graiks am using the mime type and encoding defined in application.

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We can use the fileName attribute to set a filename for the binary content. The complete code that contains the logic to generate the ZIP file is this: Based from this, it is easy to modify the sample to rgails different types of files inside the output ZIP. You can fix this by adding CompileStatic to your method, but that is not always feasible.

Sign up using Facebook. Handler dispatch failed; nested exception is java. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Hi all, I have a controller which would stream file as response.

Grails Example Application – Download / Export ZIP File – Grails Cookbook

Since Grails 2 we can render binary output with the render method and the file attribute. Email Required, response.outputstrream never shown. ServletOutputStream to make this work. Learn more about retrieving config values. If you like my posts, like my Facebook page please: Posted by Hubert Klein Ikkink. If I recall correctly, the left shift operator here uses some annotation or something clearly I don’t remember details! This will also set a response header with the name Content-Disposition with a the filename as value.