Showing the thumbnail view of the uploaded image

Question

Hello Experts,
I am developing a website in jsp, where i have a module for patron uploading their photo into the server.
After a lot of gooling and searches in this site, i found code to upload the image and it uploads perfectly into the specified folder at server also. But my need is showing the uploaded image at once, after the image is uploaded. i used
<img src="images\<%=filepath%>"> and also
<img src="ImageServlet\file=<%=filepath%>"> both are not working.
any suggession will be greatly appreciated.
Regards,
Sri.

Answer 1

Thanks for your suggessions, i have placed my code below, i think i am closing the file afrer writing.
If anything is failed to close, please let me know.
            if (request.getParameter("upload") != null) {
                String contentType = request.getContentType();
                if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {
                    DataInputStream in = new DataInputStream(request.getInputStream());
                    int formDataLength = request.getContentLength();
                    byte dataBytes[] = new byte[formDataLength];
                    int byteRead = 0;
                    int totalBytesRead = 0;
                    while (totalBytesRead < formDataLength) {
                        byteRead = in.read(dataBytes, totalBytesRead, formDataLength);
                        totalBytesRead += byteRead;
                    String file = new String(dataBytes);
                    String saveFile = file.substring(file.indexOf("filename=\"") + 10);
                    saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
                    saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1, saveFile.indexOf("\""));
                    String ext = "";
                    if (saveFile.indexOf(".") != -1) {
                        ext = saveFile.substring(saveFile.lastIndexOf("."));
                    int lastIndex = contentType.lastIndexOf("=");
                    String boundary = contentType.substring(lastIndex + 1, contentType.length());
                    int pos;
                    pos = file.indexOf("filename=\"");
                    pos = file.indexOf("\n", pos) + 1;
                    pos = file.indexOf("\n", pos) + 1;
                    pos = file.indexOf("\n", pos) + 1;
                    int boundaryLocation = file.indexOf(boundary, pos) - 4;
                    int startPos = ((file.substring(0, pos)).getBytes()).length;
                    int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
                    if (ext.equalsIgnoreCase(".jpeg") || ext.equalsIgnoreCase(".jpg") || ext.equalsIgnoreCase(".gif") || ext.equalsIgnoreCase(".png") || ext.equalsIgnoreCase(".tiff")) {
                        String strFilePath = "";
                        String strCopyPath = "";
                        Properties props = new Properties();
                        try {
                            File filDBConfig = new File(strFilePath);
                            FileInputStream fiStream = new FileInputStream("C:\\sansri\\config.properties");
                            props.load(fiStream);
                            strFilePath = props.getProperty("db.photopath");
                            strCopyPath = props.getProperty("db.copypath");
                            fiStream.close();
                            filDBConfig = null;
                        } catch (Exception e) {
                            e.printStackTrace();
                            Photo = "Invalid File";
                        System.out.println("strFilePath " + strFilePath);
                        File fff = new File(strFilePath);
                        if (fff.exists() == false) {
                            fff.mkdirs();
                        fff = new File(strCopyPath);
                        if (fff.exists() == false) {
                            fff.mkdirs();
                        //copying into build to show uploaded image at once
                        Photo = request.getParameter("upload").concat(ext);
                        FileOutputStream fileOut = new FileOutputStream(strFilePath + "\\" + Photo);
                        fileOut.write(dataBytes, startPos, (endPos - startPos));
                        fileOut.flush();
                        fileOut.close();
                        //copying into web also to avoid unavailability of image while rebuilding
                        fileOut = new FileOutputStream(strCopyPath + "\\" + Photo);
                        fileOut.write(dataBytes, startPos, (endPos - startPos));
                        fileOut.flush();
                        fileOut.close();
                    } else {
                        Photo = "Invalid File";
            }{code}