Hi all,
Thanks for your tips, and I have some silly question about this.
1:) a directory that's not part of the app's exploded WAR file
The direcotry tree like this, and Where is i can create a well
defined directory
that's not part of the app's exploded WAR file ? I'm not familiar
with this.
###
demo
--src
--main
--resources
--i18n
--props
--scala
--webapp
--test
--target
###
2:) If I store images to the RDBMS, and how can it be shown in the
webpage ?
###
FileParamHolder(_, mime, name, data)
....
item.receipt(data).receiptMime(mime) // ( Array[Byte] that saved
into database )
###
:)
Thanks very much !
Cheers,
Neil
On Nov 15, 5:43 am, David Pollak <[email protected]>
wrote:
> On Sat, Nov 14, 2009 at 10:25 AM, Neil.Lv <[email protected]> wrote:
>
> > Tim,
>
> > haha, yeah.
>
> > I use this code to get the images folder(the full path) of the app.
>
> > LiftRules.getResource("/images/").open_!.toString.substring(6)
> > (The code is so redundant !)
> > -> G:\project\demo\src\main\webapp\images\
>
> You cannot rely on being able to write to a directory in an application.
> This is dependent on how the specific web app container handles things, but
> I would strongly suggest you write images to a directory that's not part of
> the app's exploded WAR file. And "strongly" is a very weak description of
> how forceful I'm being about this. This kind of code may change behaviour
> between your dev box and production, between versions of your app container.
>
> If you want to store images to serve, either use a well defined directory
> outside your WAR file or put stuff in your RDBMS or put stuff up on Amazon
> (like Twitter does with images). Amazon has much better infrastructure for
> dealing with serving static content than just about anyone else.
>
>
>
> > :)
>
> > Thank you very much !
>
> > Cheers,
> > Neil
>
> > On Nov 15, 1:50 am, Timothy Perrett <[email protected]> wrote:
> > > Hmm, I guess you must be new to the JVM - you cant write a file inside a
> > WAR file; it does not work like that.
>
> > > You'll need to write to a fully qualified path (as per my example).
>
> > > Cheers, tim
>
> > > On 14 Nov 2009, at 17:34, Neil.Lv wrote:
>
> > > > It show this error message:
>
> > > > ERROR - java.io.FileNotFoundException: \images\003.jpg
>
> > > > ######### this is the code
>
> > > > val receiptOk = fileHolder match {
> > > > case Full(FileParamHolder(_, null, _, _)) => true
> > > > case Full(FileParamHolder(_, mime, name, data))
> > > > if mime.startsWith("image/") => {
> > > > var buff = new java.io.BufferedInputStream(new ByteArrayInputStream
> > > > (data))
> > > > try {
> > > > var fos = new java.io.FileOutputStream(new File("/images/" +
> > > > name))
> > > > var in = 0
> > > > do {
> > > > in = buff.read()
> > > > if (in != -1){
> > > > fos.write(in)
> > > > }
> > > > } while((in != -1))
> > > > fos = null
> > > > in = 0
> > > > } catch {
> > > > case e => Log.error(e)
> > > > } finally {
> > > > buff.close()
> > > > }
> > > > buff = null
> > > > true
> > > > }
> > > > case Full(_) => {
> > > > S.error(S.??("invalid.receipt.attachment"))
> > > > false
> > > > }
> > > > case _ => true
> > > > }
>
> > > > #########
>
> > > > Maybe this code is wrong ?
>
> > > > new File("/images/" + name)
>
> > > > I want to save it in the main\webapp\images\ folder.
> > > > -> main\webapp\images\ 003.jpg
>
> > > > :)
>
> > > > Cheers,
> > > > Neil
>
> > > > On Nov 15, 12:23 am, Timothy Perrett <[email protected]> wrote:
> > > >> Neil,
>
> > > >> Try something like:
>
> > > >> var buff = new java.io.BufferedInputStream(input)
> > > >> try {
> > > >> var fos = new java.io.FileOutputStream(new File("/some/root/
> > > >> filepath/" + image_hash_filename))
> > > >> var in = 0
> > > >> do {
> > > >> in = buff.read()
> > > >> if (in != -1){
> > > >> fos.write(in)
> > > >> }
> > > >> } while((in != -1))
> > > >> fos = null
> > > >> in = 0} catch {
>
> > > >> case e => Log.error(e)
>
> > > >> } finally {
> > > >> buff.close()
> > > >> }
> > > >> buff = null
> > > >> }
>
> > > >> In my case, I had the data as an input stream - manipulate this code
> > > >> to take it however you need.
>
> > > >> Cheers, Tim
>
> > > >> On Nov 14, 7:55 am, "Neil.Lv" <[email protected]> wrote:
>
> > > >>> Here is some code , but it's wrong!
>
> > > >>> --> java.io.FileNotFoundException: \images\1.jpeg
>
> > > >>> if mime.startsWith("image/") => {
> > > >>> try{
> > > >>> var file: File = new File("/images/1.jpeg");
> > > >>> var fos:FileOutputStream = new FileOutputStream(file);
> > > >>> fos.write(data)
> > > >>> } catch {
> > > >>> case e => println("exception: " + e)
> > > >>> }
> > > >>> e.receipt(data).receiptMime(mime)
> > > >>> true
> > > >>> }
>
> > > >>> I don't know how to write the code in the try catch statement.
>
> > > >>> Does anyone can help me ?~
>
> > > >>> Thanks very much !
>
> > > >>> Cheers,
> > > >>> Neil
>
> > > >>> On Nov 14, 1:58 pm, "Neil.Lv" <[email protected]> wrote:
>
> > > >>>> Hi all,
>
> > > >>>> How to save the uploaded image into the folder via fileUpload in
> > > >>>> Lift?
>
> > > >>>> I don't want to save it in the database, the example code in the
> > > >>>> Pocketchangeapp
>
> > > >>>> ###
> > > >>>> val receiptOk = fileHolder match {
> > > >>>> case Full(FileParamHolder(_, null, _, _)) => true
> > > >>>> case Full(FileParamHolder(_, mime, _, data))
> > > >>>> if mime.startsWith("image/") => {
> > > >>>> // How can i save the data into a image in the folder.
> > > >>>> e.receipt(data).receiptMime(mime)
> > > >>>> true
> > > >>>> }
> > > >>>> case Full(_) => {
> > > >>>> S.error("Invalid receipt attachment")
> > > >>>> false
> > > >>>> }
> > > >>>> case _ => true
> > > >>>> }
> > > >>>> ###
>
> > > >>>> To save the image into the webapp\images folder, and it's shown
> > > >>>> just use this link:
> > > >>>> /images/img1.jpg
>
> > > >>>> Thanks for any suggestion!
>
> > > >>>> Cheers,
> > > >>>> Neil
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Surf the harmonics
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