fileuploadbean.java

仿照著名的petstore写的网上书店

                        ee.printStackTrace();
                    }
                } else {
                    PetstoreUtil.getLogger().log(Level.INFO, "A \"proxyHost\" and \"proxyPort\" isn't set as a web.xml context-param. A proxy server may be necessary to reach the open internet.");
                }
                
                // use component to get points based on location (this uses Yahoo's map service
                String totAddr=addressx.toString();
                double latitude=0;
                double longitude=0;
                if(totAddr.length() > 0) {
                    try {
                        GeoPoint points[]=geoCoder.geoCode(totAddr);
                        if ((points == null) || (points.length < 1)) {
                            PetstoreUtil.getLogger().log(Level.INFO, "No addresses for location - " + totAddr);
                        } else if(points.length > 1) {
                            PetstoreUtil.getLogger().log(Level.INFO, "Matched " + points.length + " locations, taking the first one");
                        }
                        
                        // grab first address in more that one came back
                        if(points != null && points.length > 0) {
                            // set values to used for map location
                            latitude = points[0].getLatitude();
                            longitude = points[0].getLongitude();
                        }
                    } catch (Exception ee) {
                        PetstoreUtil.getLogger().log(Level.WARNING, "geocoder.lookup.exception", ee);
                    }
                }
                BigDecimal pricex;
                try {
                    pricex=new BigDecimal(price).setScale(2, BigDecimal.ROUND_HALF_UP);
                } catch (NumberFormatException nf) {
                    pricex=BigDecimal.valueOf(-1);
                    PetstoreUtil.getLogger().log(Level.INFO, "Price isn't in a proper number - " + price);
                }
                Address addr = new Address(street1,"",city,state,zip,
                        latitude,longitude);
                SellerContactInfo contactInfo = new SellerContactInfo(firstName, lastName, email);
                Item item = new Item(prodId,name,desc,fileName, thumbPath, pricex,
                        addr,contactInfo,0,0);
                
                // validate item
                String[] errors=item.validateWithMessage();
                if(bDebug) System.out.println("*** validation errors = " + errors.length);
                if(errors.length > 0) {
                    // some validation errors have been hit through an exception
                    StringBuilder sbMess=new StringBuilder();
                    for(String mesg : errors) {
                        sbMess.append(mesg);
                        sbMess.append("\n");
                    }
                    
                    sendErrorResponse(response, writer, sbMess.toString());
                    return;
                }
                
                if (catalogFacade == null) {
                    Map<String,Object> contextMap = context.getExternalContext().getApplicationMap();
                    this.catalogFacade = (CatalogFacade)contextMap.get("CatalogFacade");
                }
                
                // now parse tags for item
                StringTokenizer stTags=new StringTokenizer(tags, " ");
                String tagx=null;
                while(stTags.hasMoreTokens()) {
                    tagx=stTags.nextToken().toLowerCase();
                    Tag tag=null;
                    if(bDebug) System.out.println("Adding TAG = " + tagx);
                    // see if tag is already in item
                    if(!item.containsTag(tagx)) {
                        // add correct tag reference to item
                        item.getTags().add(catalogFacade.addTag(tagx));
                    }
                }
                
                itemId=catalogFacade.addItem(item);
                PetstoreUtil.getLogger().log(Level.FINE, "Item " + name + " has been persisted");
                
            } catch (Exception ex) {
                // since this method is access through an ajax call, must send back a message
                // so the client can forward the user to the systemerror page
                PetstoreUtil.getLogger().log(Level.SEVERE, "fileupload.persist.exception", ex);
                response.sendError(response.SC_INTERNAL_SERVER_ERROR, ex.toString());
                return;
            }
            
            String responseMessage = firstName+", Thank you for submitting your book "+name+" !";
            FileUploadResponse fuResponse = new FileUploadResponse(
                    itemId,
                    prodId,
                    responseMessage,
                    status.getStatus(),
                    Long.toString(status.getUploadTime()),
                    status.getUploadTimeString(),
                    status.getStartUploadDate().toString(),
                    status.getEndUploadDate().toString(),
                    Long.toString(status.getTotalUploadSize()),
                    thumbPath);
            session.removeAttribute(FILE_UL_RESPONSE);
            session.setAttribute(FILE_UL_RESPONSE, fuResponse);
            /** the following writer operation is for the case when iframe
             * bug is fixed. they are not used currently in the client
             */
            StringBuffer sb=new StringBuffer();
            response.setContentType("text/xml;charset=UTF-8");
            response.setHeader("Pragma", "No-Cache");
            response.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
            response.setDateHeader("Expires", 1);
            sb.append("<response>");
            sb.append("<message>");
            sb.append(responseMessage);
            sb.append("</message>");
            sb.append("<status>");
            sb.append(status.getStatus());
            sb.append("</status>");
            sb.append("<duration>");
            sb.append(status.getUploadTime());
            sb.append("</duration>");
            sb.append("<duration_string>");
            sb.append(status.getUploadTimeString());
            sb.append("</duration_string>");
            sb.append("<start_date>");
            sb.append(status.getStartUploadDate());
            sb.append("</start_date>");
            sb.append("<end_date>");
            sb.append(status.getEndUploadDate());
            sb.append("</end_date>");
            sb.append("<upload_size>");
            sb.append(status.getTotalUploadSize());
            sb.append("</upload_size>");
            sb.append("<thumbnail>");
            sb.append(thumbPath);
            sb.append("</thumbnail>");
            sb.append("<itemId>");
            sb.append(itemId);
            sb.append("</itemId>");
            sb.append("<productId>");
            sb.append(prodId);
            sb.append("</productId>");
            sb.append("</response>");
            if(bDebug) System.out.println("Response:\n" + sb);
            writer.write(sb.toString());
            writer.flush();
            
        } catch (IOException iox) {
            PetstoreUtil.getLogger().log(Level.SEVERE, "FileUploadPhaseListener error writting AJAX response", iox);
        }
    }
    
    private String constructThumbnail(String path) {
        String thumbPath = null;
        File file = new File(path);
        String aPath = file.getAbsolutePath();
        
        // first, construct the file name for thumbnail
        if (file.exists()) {
            int idx = aPath.lastIndexOf(".");
            if (idx > 0) {
                thumbPath = aPath.substring(0, idx)+"_thumb"+aPath.substring(idx, aPath.length());
            }
        }
        try {
            ImageScaler imgScaler = new ImageScaler(aPath);
            imgScaler.keepAspectWithWidth();
            imgScaler.resizeWithGraphics(thumbPath);
        } catch (Exception e) {
            PetstoreUtil.getLogger().log(Level.SEVERE, "ERROR in generating thumbnail", e);
        }
        return thumbPath;
    }
    
    private String getStringValue(Hashtable htUpload, String key)  {
        if(key == null) return null;
        
        String sxTemp=(String)htUpload.get(key);
        if(sxTemp == null) {
            sxTemp="";
        }
        return sxTemp;
    }
    
    public String getUploadImageDirectory() {
        return PetstoreConstants.PETSTORE_IMAGE_DIRECTORY + "/images";
    }
    
    private void sendErrorResponse(HttpServletResponse response, ResponseWriter writer, String mess) throws IOException {
        response.setContentType("text/xml;charset=UTF-8");
        response.setHeader("Pragma", "No-Cache");
        response.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
        response.setDateHeader("Expires", 1);
        writer.write("<response>");
        writer.write("<message>");
        writer.write("Validation Error");
        writer.write("</message>");
        writer.write("<detail>");
        writer.write(mess);
        writer.write("</detail>");
        writer.write("</response>");
    }
    
    
}