How to access files stored in a portal

Question

Hi All,
I have a file stored in the root directory ..somewhere in root/portalapps/myfile.csv
This is an xl file ...
I want to read the contents of this file and write it on the screen..
even though there is data in my file but i am not being able to read it..
Below is the code i am using...
Here pramFile is the corresponding file in the portal server
//Code
FileInputStream fis = null;
BufferedInputStream bis = null;
DataInputStream dis = null;
try {
     fis = new FileInputStream(pramFile.getAbsolutePath());
// Here BufferedInputStream is added for fast reading.
    bis = new BufferedInputStream(fis);
   dis = new DataInputStream(bis);
// dis.available() returns 0 if the file does not have more lines.
   while (dis.readLine() != null) {
// this statement reads the line from the file and print it to
// the console.
                                   response.write("line is "+dis.readLine());
// dispose all the resources after using them.
     fis.close();
     bis.close();
                dis.close();
     } catch (FileNotFoundException e) {
     response.write("FileNotFoundException");
e.printStackTrace();
     } catch (IOException e) {
response.write("IOException");
     e.printStackTrace();
//END
Here dis.readLine() is giving null
Kindly suggest if there is any mistake in my approach
Thanks Sundeep

Answer 1

Hello Sundeep,
As the Root/Portalapps folder is not accessible, you can only specify yourFilePath to absolute path on your file system
(ex: c:/...../Root/Portalapps/yourfile)
Using file system absolute path is not at all a good idea as the application is not portable to other servers. So my suggesion is to keep this csv file in your Applications webresource path like: ROOT/portalapps/com.yourapplication/csvfile
Now your csvfile is accessible like this: ".../irj/root/portalapps/com.yourapplication/csvfile"
Here is example how to get Image which is in public path:
IResource rs = componentRequest.getResource(IResource.IMAGE,
               "../mimes/mypicture.gif");
image.setSrc(rs.getResourceInformation().getURL(componentRequest));
Greetings,
Praveen Gudapati