CODEWITHSUNDEEP
imagegrails
Mohamed Emad Hegab
Mohamed Emad Hegab

Reputation: 2675

Grails:-How To display image in file system

I need to display image that is in file system not in project directory in grails.. i used 

< img src="${createLinkTo(dir: '/Users/ME/ddImages/reg/', file: '${userInstance.fileName}.jpg')}" alt="User Photo"/>

but that doesn't seem to work

so any help?

Upvotes: 0

Views: 3430

Answers (2)

Emmanuel John
Emmanuel John

Reputation: 2340

Think you are trying to render a file that is not in the webroot of your project. You CAN'T do this by simply passing a URL to your view. One way you can do it is read the image file as a stream and then write the byte stream to view. e.g:

<img src="${request.contextPath}/controllerName/getImage?filepath=${path_to_file_in_filesystem}" alt="whatever. alternatively, filename"/>

then the action in the controller will look like this: 

def getImage(){
    def path = params.filepath
    //returns an image to display
    BufferedImage originalImage = ImageIO.read(new File(path));
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    def fileext = path.substring(path.indexOf(".")+1, path.length())

    ImageIO.write( originalImage, fileext, baos );
    baos.flush();

    byte[] img = baos.toByteArray();
    baos.close();
    response.setHeader('Content-length', img.length.toString())
    response.contentType = "image/"+fileext // or the appropriate image content type
    response.outputStream << img
    response.outputStream.flush()
}

That should do it. Hope this helps someone.

Upvotes: 0

Aaron Saunders
Aaron Saunders

Reputation: 33345

BTW, the grails tag is depricated, use resource; and that tag will keep you within the application's base path

http://www.grails.org/Tag+-+createLinkTo

Documentation on the img tag http://www.w3schools.com/tags/att_img_src.asp,

Possible values for "src"

An absolute URL - points to another web site (like src="http://www.example.com/image.gif")
A relative URL - points to a file within a web site (like src="image.gif")

Upvotes: 2

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