Subversion Repositories SmartDukaan

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import javax.servlet.ServletOutputStream;

import in.shop2020.util.CRMConstants;

    private static final String SEMI_COLON = ";";

    private String attachment;

    public String[] getAttachments() {

        String attachments = activity.getAttachments();

        return attachments == null ? new String[0] : attachments.split(SEMI_COLON);

    }

    public String getAttachment() {

        return attachment;

    }

    public void setAttachment(String attachment) {

        this.attachment = attachment;

    }

    public void downloadAttachment() {

        String fileName = CRMConstants.ATTACHMENTS_ARCHIVE_DIR + attachment;

        File file = new File(fileName);

        byte[] buffer = new byte[(int)file.length()];

        try {

            InputStream input = null;

            try {

                int totalBytesRead = 0;

                input = new BufferedInputStream(new FileInputStream(file));

                while(totalBytesRead < buffer.length){

                    int bytesRemaining = buffer.length - totalBytesRead;

                    //input.read() returns -1, 0, or more :

                    int bytesRead = input.read(buffer, totalBytesRead, bytesRemaining); 

                    if (bytesRead > 0){

                        totalBytesRead = totalBytesRead + bytesRead;

                    }

                }

                /*

                 the above style is a bit tricky: it places bytes into the 'buffer' array; 

                 'buffer' is an output parameter;

                 the while loop usually has a single iteration only.

                 */

            }

            finally {

                input.close();

            }

        }

        catch (FileNotFoundException ex) {

            System.out.println("FILE NOT FOUND : " + attachment);

        }

        catch (IOException ex) {

            System.out.println("FILE NOT FOUND : " + attachment);

        }

        response.setHeader("Content-disposition", "inline; filename=" + attachment );

        ServletOutputStream sos;

        try {

            sos = response.getOutputStream();

            sos.write(buffer);

            sos.flush();

        } catch (IOException e) {

            System.out.println("Unable to stream the manifest file");

        }   

    }