Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.sifiso.dvs.util; import com.google.gson.Gson; import com.google.gson.JsonSyntaxException; import com.sifiso.dvs.gate.dto.PhotoUploadDTO; import com.sifiso.dvs.gate.dto.RequestDTO; import com.sifiso.dvs.gate.dto.ResponseDTO; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.math.BigDecimal; import java.util.Date; import java.util.logging.Level; import java.util.logging.Logger; import javax.ejb.Stateless; import javax.servlet.http.HttpServletRequest; import org.apache.commons.fileupload.FileItemIterator; import org.apache.commons.fileupload.FileItemStream; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.fileupload.util.Streams; import org.joda.time.DateTime; /** * * @author aubreyM */ @Stateless public class PhotoUtil { public ResponseDTO downloadPhotos(HttpServletRequest request, PlatformUtil platformUtil) throws FileUploadException { logger.log(Level.INFO, "######### starting PHOTO DOWNLOAD process\n\n"); ResponseDTO resp = new ResponseDTO(); InputStream stream = null; File rootDir; try { rootDir = dvsProperties.getImageDir(); logger.log(Level.INFO, "rootDir - {0}", rootDir.getAbsolutePath()); if (!rootDir.exists()) { rootDir.mkdir(); } } catch (Exception ex) { logger.log(Level.SEVERE, "Properties file problem", ex); resp.setMessage("Server file unavailable. Please try later"); resp.setStatusCode(114); return resp; } PhotoUploadDTO dto = null; Gson gson = new Gson(); File doctorFileDir = null, surgeryDir = null; try { ServletFileUpload upload = new ServletFileUpload(); FileItemIterator iter = upload.getItemIterator(request); while (iter.hasNext()) { FileItemStream item = iter.next(); String name = item.getFieldName(); stream = item.openStream(); if (item.isFormField()) { if (name.equalsIgnoreCase("JSON")) { String json = Streams.asString(stream); if (json != null) { logger.log(Level.INFO, "picture with associated json: {0}", json); dto = gson.fromJson(json, PhotoUploadDTO.class); if (dto != null) { surgeryDir = createSurgeryFileDirectory(rootDir, surgeryDir, dto.getSurgeryID()); if (dto.getDoctorID() > 0) { doctorFileDir = createDoctorDirectory(surgeryDir, doctorFileDir, dto.getDoctorID()); } } } else { logger.log(Level.WARNING, "JSON input seems pretty fucked up! is NULL.."); } } } else { File imageFile = null; if (dto == null) { continue; } DateTime dt = new DateTime(); String fileName = ""; if (dto.isIsFullPicture()) { fileName = "f" + dt.getMillis() + ".jpg"; } else { fileName = "t" + dt.getMillis() + ".jpg"; } if (dto.getPatientfileID() != null) { if (dto.isIsFullPicture()) { fileName = "f" + dto.getPatientfileID() + ".jpg"; } else { fileName = "t" + dto.getPatientfileID() + ".jpg"; } } // switch (dto.getPictureType()) { case PhotoUploadDTO.FILES_DOCTOR: imageFile = new File(doctorFileDir, fileName); break; case PhotoUploadDTO.FILES_SURGERY: imageFile = new File(surgeryDir, fileName); } writeFile(stream, imageFile); resp.setStatusCode(0); resp.setMessage("Photo downloaded from mobile app "); //add database System.out.println("filepath: " + imageFile.getAbsolutePath()); //create uri /*int index = imageFile.getAbsolutePath().indexOf("monitor_images"); if (index > -1) { String uri = imageFile.getAbsolutePath().substring(index); System.out.println("uri: " + uri); dto.setUri(uri); } dto.setDateUploaded(new Date()); if (dto.isIsFullPicture()) { dto.setThumbFlag(null); } else { dto.setThumbFlag(1); } dataUtil.addPhotoUpload(dto);*/ } } } catch (FileUploadException | IOException | JsonSyntaxException ex) { logger.log(Level.SEVERE, "Servlet failed on IOException, images NOT uploaded", ex); throw new FileUploadException(); } return resp; } private File createSurgeryFileDirectory(File rootDir, File surgeryFile, int id) { logger.log(Level.INFO, "task photo to be downloaded"); surgeryFile = new File(rootDir, RequestDTO.SURGERY_DIR + id); if (!surgeryFile.exists()) { surgeryFile.mkdir(); logger.log(Level.INFO, "task directory created - {0}", surgeryFile.getAbsolutePath()); } return surgeryFile; } private File createDoctorDirectory(File surgeryDir, File doctorDir, int id) { logger.log(Level.INFO, "projectSite photo to be downloaded"); doctorDir = new File(surgeryDir, RequestDTO.DOCTOR_DIR + id); if (!doctorDir.exists()) { doctorDir.mkdir(); logger.log(Level.INFO, "project site directory created - {0}", doctorDir.getAbsolutePath()); } return doctorDir; } private void writeFile(InputStream stream, File imageFile) throws FileNotFoundException, IOException { if (imageFile == null) { throw new FileNotFoundException(); } try (FileOutputStream fos = new FileOutputStream(imageFile)) { int read; byte[] bytes = new byte[2048]; while ((read = stream.read(bytes)) != -1) { fos.write(bytes, 0, read); } stream.close(); fos.flush(); } logger.log(Level.WARNING, "### File downloaded: {0} size: {1}", new Object[] { imageFile.getAbsolutePath(), imageFile.length() }); } public static double getElapsed(long start, long end) { BigDecimal m = new BigDecimal(end - start).divide(new BigDecimal(1000)); return m.doubleValue(); } static final Logger logger = Logger.getLogger("PhotoUtil"); }