Java tutorial
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(By way * of non-limiting example, you will not contribute any code obtained by you under the GNU General Public License or other * so-called "reciprocal" license.) *******************************************************************************/ package edu.stanford.epad.common.dicom; import java.io.BufferedReader; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import javax.servlet.http.HttpServletResponse; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.io.IOUtils; import edu.stanford.epad.common.util.EPADConfig; import edu.stanford.epad.common.util.EPADLogger; import edu.stanford.epad.common.util.WadoUrlBuilder; public class DCM4CHEEUtil { private static final String dicomServerPort = EPADConfig.dicomServerPort; private static final String aeTitle = EPADConfig.aeTitle; private static final EPADLogger log = EPADLogger.getInstance(); public static int downloadDICOMFileFromWADO(DICOMFileDescription dicomFileDescription, File outputDicomFile) throws IOException { String studyUID = dicomFileDescription.studyUID; String seriesUID = dicomFileDescription.seriesUID; String imageUID = dicomFileDescription.imageUID; return downloadDICOMFileFromWADO(studyUID, seriesUID, imageUID, outputDicomFile); } public static int downloadDICOMFileFromWADO(String studyUID, String seriesUID, String imageUID, File outputDicomFile) throws IOException { String wadoHost = EPADConfig.dcm4CheeServer; int wadoPort = EPADConfig.dcm4cheeServerWadoPort; String wadoBaseURL = EPADConfig.wadoURLExtension; WadoUrlBuilder wadoUrlBuilder = new WadoUrlBuilder(wadoHost, wadoPort, wadoBaseURL, WadoUrlBuilder.ContentType.FILE); wadoUrlBuilder.setStudyUID(studyUID); wadoUrlBuilder.setSeriesUID(seriesUID); wadoUrlBuilder.setObjectUID(imageUID); String wadoUrl = wadoUrlBuilder.build(); try { HttpClient client = new HttpClient(); GetMethod method = new GetMethod(wadoUrl); int statusCode = client.executeMethod(method); if (statusCode == HttpServletResponse.SC_OK) { OutputStream outputStream = null; try { outputStream = new FileOutputStream(outputDicomFile); InputStream inputStream = method.getResponseBodyAsStream(); int read = 0; byte[] bytes = new byte[4096]; while ((read = inputStream.read(bytes)) != -1) { outputStream.write(bytes, 0, read); } } finally { IOUtils.closeQuietly(outputStream); method.releaseConnection(); } } else { log.warning("Wado URL:" + wadoUrl + " Status:" + statusCode); } return statusCode; } catch (IOException x) { log.warning("Error downloading from WADO Url:" + wadoUrl, x); throw x; } } public static void dcmsnd(String inputPathFile, boolean throwException) throws Exception { InputStream is = null; InputStreamReader isr = null; BufferedReader br = null; try { String dcmServerTitlePort = aeTitle + "@localhost:" + dicomServerPort; dcmServerTitlePort = dcmServerTitlePort.trim(); log.info("Sending file - command: ./dcmsnd " + dcmServerTitlePort + " " + inputPathFile); String[] command = { "./dcmsnd", dcmServerTitlePort, inputPathFile }; ProcessBuilder pb = new ProcessBuilder(command); String dicomBinDirectoryPath = EPADConfig.getEPADWebServerDICOMBinDir(); log.info("DICOM binary directory: " + dicomBinDirectoryPath); pb.directory(new File(dicomBinDirectoryPath)); Process process = pb.start(); process.getOutputStream(); is = process.getInputStream(); isr = new InputStreamReader(is); br = new BufferedReader(isr); String line; StringBuilder sb = new StringBuilder(); while ((line = br.readLine()) != null) { sb.append(line).append("\n"); log.info("./dcmsend output: " + line); } try { int exitValue = process.waitFor(); log.info("dcmsnd exit value is: " + exitValue); if (sb.toString().contains("Sent 0 objects")) { log.warning("Zero objects sent to dcm4che, some error has occurred"); throw new Exception("Error sending files to dcm4che"); } } catch (InterruptedException e) { log.warning("Error sending DICOM files in: " + inputPathFile, e); } String cmdLineOutput = sb.toString(); if (cmdLineOutput.toLowerCase().contains("error")) { throw new IllegalStateException("Failed for: " + cmdLineOutput); } } catch (Exception e) { if (e instanceof IllegalStateException && throwException) { throw e; } log.warning("dcmsnd failed: " + e.getMessage()); if (throwException) { throw new IllegalStateException("dcmsnd failed", e); } } catch (OutOfMemoryError oome) { log.warning("dcmsnd ran out of memory", oome); if (throwException) { throw new IllegalStateException("dcmsnd ran out of memory", oome); } } finally { IOUtils.closeQuietly(br); IOUtils.closeQuietly(isr); } } }