I would like to read a shapefile in java and then draw it. Are there anyway to read a shapefile and draw it in java? Do you know any useful and easy framework?
Thanks.
You can try Geotools. You can start with this code.
public class Quickstart {
public static void main(String[] args) throws Exception {
File file = JFileDataStoreChooser.showOpenFile("shp", null);
if (file == null) {
return;
}
FileDataStore store = FileDataStoreFinder.getDataStore(file);
SimpleFeatureSource featureSource = store.getFeatureSource();
// Create a map content and add our shapefile to it
MapContent map = new MapContent();
map.setTitle("Quickstart");
Style style = SLD.createSimpleStyle(featureSource.getSchema());
Layer layer = new FeatureLayer(featureSource, style);
map.addLayer(layer);
// Display the map
JMapFrame.showMap(map);
}
}
Related
I have multiple mp4 files which are parts of a whole mp4 file. They have been just split up to smaller files.
I want to combine those files programmatically into one mp4 file using jcodec in Java. Currently, I'm using the following code to do this:
import org.jcodec.common.DemuxerTrack;
import org.jcodec.common.MuxerTrack;
import org.jcodec.common.io.SeekableByteChannel;
import org.jcodec.common.model.Packet;
import org.jcodec.containers.mp4.Brand;
import org.jcodec.containers.mp4.demuxer.MP4Demuxer;
import org.jcodec.containers.mp4.muxer.MP4Muxer;
import java.io.File;
import java.util.List;
import static org.jcodec.common.io.NIOUtils.readableChannel;
import static org.jcodec.common.io.NIOUtils.writableChannel;
public class Main {
public static void main(String[] args) throws Exception {
File outputFile = new File("file_path_output.mp4");
outputFile.mkdirs();
outputFile.delete();
File[] inputFiles = new File[]{
new File("file_path_1.mp4"),
new File("file_path_2.mp4"),
new File("file_path_3.mp4"),
};
SeekableByteChannel output = writableChannel(outputFile);
MP4Muxer mp4Muxer = MP4Muxer.createMP4Muxer(output, Brand.MP4);
MuxerTrack mixedVideoTrack = null;
MuxerTrack mixedAudioTrack = null;
for (File input : inputFiles) {
SeekableByteChannel byteChannel = readableChannel(input);
MP4Demuxer demuxer = MP4Demuxer.createMP4Demuxer(byteChannel);
List<DemuxerTrack> videoTracks = demuxer.getVideoTracks();
List<DemuxerTrack> audioTracks = demuxer.getAudioTracks();
if (mixedVideoTrack == null) {
mixedVideoTrack = mp4Muxer.addVideoTrack(videoTracks.get(0).getMeta().getCodec(), videoTracks.get(0).getMeta().getVideoCodecMeta());
}
if (mixedAudioTrack == null) {
mixedAudioTrack = mp4Muxer.addAudioTrack(audioTracks.get(0).getMeta().getCodec(), audioTracks.get(0).getMeta().getAudioCodecMeta());
}
for (DemuxerTrack videoTrack : videoTracks) {
Packet packet;
while ((packet = videoTrack.nextFrame()) != null) {
mixedVideoTrack.addFrame(packet);
}
}
for (DemuxerTrack audioTrack : audioTracks) {
Packet packet;
while ((packet = audioTrack.nextFrame()) != null) {
mixedAudioTrack.addFrame(packet);
}
}
demuxer.close();
}
mp4Muxer.finish();
output.close();
}
}
Unfortunately, it does not work as the video generated does not contain audio files nor correct frames. For example, all visual frames I get are like one below:
What is the problem and how can I fix it? Thank you very much.
You can do this with ffmpeg.
First you will need to write the file paths to a txt file
txt file with :
file '/sdcard/video/video1.mp4'
file '/sdcard/video/video2.mp4'
file '/sdcard/video/video3.mp4'
file '/sdcard/video/video4.mp4'
You can use following command.
ffmpeg -f concat -i mp4list.txt -c:v copy -c:a copy merging.mp4
You can write a wrapper over the Java code. Additionally, you can use the code below.
Resource to help : link
String[] cmd = new String[]{"-f", "concat", "-safe", "0", "-i", "mp4list.txt", "-c", "copy", "-preset", "ultrafast", outFile};
ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler(){
#Override
public void onFailure(String message){
}
#Override
public void onSuccess(String message){
}
#Override
public void onProgress(String message){
}
#Override
public void onStart(){
}
#Override
public void onFinish(){
}
}
I don't really know jcodec, but I've used MP4parser in the past. If you need to merge mp4 files, regardless of the library, then I suggest you this one. I'm just pitching it to you because I don't know if you're having problems in merging the files due to the complexity of the library. Might be worth to give it a shot. MP4Parser is quite easy and straightforward. I'll also leave you the link to the maven repository.
https://search.maven.org/artifact/com.googlecode.mp4parser/isoparser/1.1.22/jar
Here there's an implementation I've done to show you how to merge 2 files from the same original video (to replicate your exact case). Basically, you have a Movie class, which represents your mp4 file, containing a List of Track (only 2); one representing the video while the other the audio.
First, I've collected from the movies all the video and audio tracks in two separate arrays.
Then, I've created a List with the merged audio Track and the merged video Track in order to set it to the output file.
Finally, I've built the Movie inside a Container and saved it with a FileOutputStream.
public class Main {
public static void main(String[] args) throws IOException {
MovieCreator mc = new MovieCreator();
Movie movie1 = mc.build("./test1.mp4");
Movie movie2 = mc.build("./test2.mp4");
//Fetching the video tracks from the movies and storing them into an array
Track[] vetTrackVideo = new Track[0];
vetTrackVideo = Stream.of(movie1, movie2)
.flatMap(movie -> movie.getTracks().stream())
.filter(movie -> movie.getHandler().equals("vide"))
.collect(Collectors.toList())
.toArray(vetTrackVideo);
//Fetching the audio tracks from the movies and storing them into an array
Track[] vetTrackAudio = new Track[0];
vetTrackAudio = Stream.of(movie1, movie2)
.flatMap(movie -> movie.getTracks().stream())
.filter(movie -> movie.getHandler().equals("soun"))
.collect(Collectors.toList())
.toArray(vetTrackAudio);
//Creating the output movie by setting a list with both video and audio tracks
Movie movieOutput = new Movie();
List<Track> listTracks = new ArrayList<>(List.of(new AppendTrack(vetTrackVideo), new AppendTrack(vetTrackAudio)));
movieOutput.setTracks(listTracks);
//Building the output movie and storing it into a Container
DefaultMp4Builder mp4Builder = new DefaultMp4Builder();
Container c = mp4Builder.build(movieOutput);
//Writing the output file
FileOutputStream fos = new FileOutputStream("output.mp4");
c.writeContainer(fos.getChannel());
fos.close();
}
}
Here, I'll leave you also a link to my github repository with the test mp4 files so that you can test the merging sample.
https://github.com/daniele-aveta/MP4Merger
I created a pdf using the following example:
https://developers.itextpdf.com/examples/actions-and-annotations/clone-creating-and-adding-annotations#2260-addstamp.java
#Category(SampleTest.class)
public class AddStamp extends GenericTest {
public static final String DEST = "./target/test/resources/sandbox/annotations/add_stamp.pdf";
public static final String IMG = "./src/test/resources/img/itext.png";
public static final String SRC = "./src/test/resources/pdfs/hello.pdf";
public static void main(String[] args) throws Exception {
File file = new File(DEST);
file.getParentFile().mkdirs();
new AddStamp().manipulatePdf(DEST);
}
#Override
protected void manipulatePdf(String dest) throws Exception {
PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
ImageData img = ImageDataFactory.create(IMG);
float w = img.getWidth();
float h = img.getHeight();
Rectangle location = new Rectangle(36, 770 - h, w, h);
PdfStampAnnotation stamp = new PdfStampAnnotation(location)
.setStampName(new PdfName("ITEXT"));
PdfFormXObject xObj = new PdfFormXObject(new Rectangle(w, h));
PdfCanvas canvas = new PdfCanvas(xObj, pdfDoc);
canvas.addImage(img, 0, 0, false);
stamp.setNormalAppearance(xObj.getPdfObject());
stamp.setFlags(PdfAnnotation.PRINT);
pdfDoc.getFirstPage().addAnnotation(stamp);
pdfDoc.close();
}
}
The pdf is properly created and contains the stamp annotation
I can get the annotation using:
...
PdfStampAnnotation s = (PdfStampAnnotation) pdfDoc.getFirstPage().getAnnotations().get(0);
s.?????
How can I get back the image (itext.png) of the stamp (eg: byte[]) ?
I'm really new to itext and after hours of research I'm stuck at this point...
First of all, you won't get the original image back. PDF support only very few bitmap image formats as they are: JPEG, JPEG2000, certain fax formats, but definitively not PNG. PNGs are converted into the PDF internal bitmap format, and upon extraction can best be converted back to a PNG.
Furthermore, the reason why there is no simple getImage method in the PdfStampAnnotation class is that the appearance of a stamp may be constructed like the contents of a regular page, it may contain text, it may contain vector graphics, it may contain bitmap images, it may contain an arbitrary mixture of those elements. Thus, all you can retrieve from an annotation is its appearance.
If you are sure an annotation contains only an image (or you at least are not interested in anything but the image), you can extract that image using the iText parser framework, e.g. like this:
Map<byte[], String> extractAnnotationImages(PdfStream xObject) {
final Map<byte[], String> result = new HashMap<>();
IEventListener renderListener = new IEventListener() {
#Override
public Set<EventType> getSupportedEvents() {
return Collections.singleton(RENDER_IMAGE);
}
#Override
public void eventOccurred(IEventData data, EventType type) {
if (data instanceof ImageRenderInfo) {
ImageRenderInfo imageRenderInfo = (ImageRenderInfo) data;
byte[] bytes = imageRenderInfo.getImage().getImageBytes();
String extension = imageRenderInfo.getImage().identifyImageFileExtension();
result.put(bytes, extension);
}
}
};
PdfCanvasProcessor processor = new PdfCanvasProcessor(renderListener, Collections.emptyMap());
processor.processContent(xObject.getBytes(), new PdfResources(xObject.getAsDictionary(PdfName.Resources)));
return result;
}
(ExtractAnnotationImage method)
which returns a mapping from image byte arrays to file extension to use.
I used it in this helper method:
void saveAnnotationImages(PdfDocument pdfDocument, String prefix) throws IOException {
for (int pageNumber = 1; pageNumber <= pdfDocument.getNumberOfPages(); pageNumber++) {
PdfPage page = pdfDocument.getPage(pageNumber);
int index = 0;
for (PdfAnnotation annotation : page.getAnnotations()) {
PdfDictionary normal = annotation.getAppearanceObject(PdfName.N);
if (normal instanceof PdfStream) {
Map<byte[], String> images = extractAnnotationImages((PdfStream)normal);
for (Map.Entry<byte[], String> entry : images.entrySet()) {
Files.write(new File(String.format("%s-%s-%s.%s", prefix, pageNumber, index++, entry.getValue())).toPath(), entry.getKey());
}
}
}
}
}
(ExtractAnnotationImage helper method)
to extract all images from annotations from the output of the iText example AddStamp you reference and got one image:
By the way, you'll recognize here that transparency is missing. Transparency in the PDF is modeled via a second image, a mask image, which effectively represents something like an alpha channel. One can retrieve this mask from the ImageRenderInfo.getImage() object.
I've created a report with JasperReports 6.4.3 which is normally exported to PDF. Now, I'm trying to export this report to HTML as well.
I don't want to create a HTML file via JasperExportManager, so I'm using JasperReport's HtmlExporter to wirte the report directly into an outputstream.
Her is my code:
public void exportToHtml(OutputStream outputStream, JRDataSource jrDataSource, Map<String, Object> parameter, File reportFile)
throws IOException {
try {
JasperPrint jasperprint = JasperFillManager.fillReport(reportFile.getAbsolutePath(), parameter, jrDataSource);
HtmlExporter exporter = new HtmlExporter();
SimpleHtmlExporterOutput exporterOutput = new SimpleHtmlExporterOutput(outputStream);
Map<String, String> images = Maps.newHashMap();
exporterOutput.setImageHandler(new HtmlResourceHandler() {
#Override
public void handleResource(String id, byte[] data) {
System.err.println("id" + id);
images.put(id, "data:image/jpg;base64," + Base64.encodeBytes(data));
}
#Override
public String getResourcePath(String id) {
return images.get(id);
}
});
exporter.setExporterOutput(exporterOutput);
exporter.setExporterInput(new SimpleExporterInput(jasperprint));
SimpleHtmlExporterConfiguration exporterConfiguration = new SimpleHtmlExporterConfiguration();
exporterConfiguration.setBetweenPagesHtml("<div style='page-break-after:always'></div>");
exporter.setConfiguration(exporterConfiguration);
exporter.exportReport();
} catch (JRException jrException) {
throw new IOException(jrException);
}
}
The output looks good, but I need to add some styles to the HTML output. So I wonder if it is possible to add a reference to a css file to the exported html report.
Similarly to how you are setting the between pages HTML, you could do the same for the header/footer with:
exporterConfiguration.setHtmlHeader("...");
exporterConfiguration.setHtmlFooter("...");
The default HTML code for header is set here and the one for footer is set here.
You need to match the opening/closing tags when modifying any of them.
I am writing a program in Java (I am using Ubuntu). I am using Jodconverter to convert the document to PDF. I have to convert the document to landscape mode but I have read that Jodconverter doesn't support orientation changes. I also tried with OpenOffice API but I am facing the same issue.
Is there any Java library that does conversion to landscape?
From a similar question regarding using Jodconverter with an Open Office document:
http://groups.google.com/group/jodconverter/browse_thread/thread/dc96df64c7d60ada/c1692fee92513b7a
Short answer: you can't. The page orientation is a property of the
document (menu Format > Page in Calc), not a PDF export option. So it
should be set already in the XLS document.
Export to PDF and then use a PDF library like PDFbox to rotate the pages by 90 degrees.
Try PDPage.setRotation(int) on all pages (PDDocument.getDocumentCatalog().getAllPages()).
I have found the solution. I have converted document to landscape pdf using open office API for java. Here is the code for the same.
System.out.println("starting...");
String oooExeFolder = "/usr/lib/openoffice/program";
XComponentContext xContext = BootstrapSocketConnector.bootstrap(oooExeFolder);
XMultiComponentFactory xMCF = xContext.getServiceManager();
Object oDesktop = xMCF.createInstanceWithContext("com.sun.star.frame.Desktop", xContext);
XComponentLoader xCLoader = (XComponentLoader) UnoRuntime.queryInterface(XComponentLoader.class, oDesktop);
System.out.println("loading ");
PropertyValue[] printerDesc = new PropertyValue[1];
printerDesc[0] = new PropertyValue();
printerDesc[0].Name = "PaperOrientation";
printerDesc[0].Value = PaperOrientation.LANDSCAPE;
// Create a document
XComponent document = xCLoader.loadComponentFromURL(loadUrl, "_blank", 0, printerDesc);
// Following property will convert doc into requested orientation.
XPrintable xPrintable = (XPrintable) UnoRuntime.queryInterface(XPrintable.class, document);
xPrintable.setPrinter(printerDesc);
PropertyValue[] conversionProperties = new PropertyValue[3];
conversionProperties[1] = new PropertyValue();
conversionProperties[1].Name = "FilterName";
conversionProperties[1].Value = "writer_pdf_Export";//
conversionProperties[0] = new PropertyValue();
conversionProperties[0].Name = "Overwrite ";
conversionProperties[0].Value = new Boolean(true);
System.out.println("closing");
XStorable xstorable = (XStorable) UnoRuntime.queryInterface(XStorable.class, document);
xstorable.storeToURL(storeUrl, conversionProperties);
System.out.println("closing");
XCloseable xcloseable = (XCloseable) UnoRuntime.queryInterface(XCloseable.class, document);
xcloseable.close(false);
Try overriding OfficeDocumentConverter
OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager) {
private Map<String, Object> createDefaultLoadProperties() {
Map<String, Object> loadProperties = new HashMap<String, Object>();
loadProperties.put("Hidden", true);
loadProperties.put("ReadOnly", true);
loadProperties.put("UpdateDocMode", UpdateDocMode.QUIET_UPDATE);
return loadProperties;
}
#Override
public void convert(File inputFile, File outputFile, DocumentFormat outputFormat) throws OfficeException {
String inputExtension = FilenameUtils.getExtension(inputFile.getName());
DocumentFormat inputFormat = getFormatRegistry().getFormatByExtension(inputExtension);
inputFormat.setLoadProperties(Collections.singletonMap("PaperOrientation", PaperOrientation.LANDSCAPE));
StandardConversionTask conversionTask = new StandardConversionTask(inputFile, outputFile, outputFormat) {
#Override
protected void modifyDocument(XComponent document) throws OfficeException {
PropertyValue[] printerDesc = OfficeUtils.toUnoProperties(Collections.singletonMap("PaperOrientation", PaperOrientation.LANDSCAPE));
XPrintable xPrintable = cast(XPrintable.class, document);
try {
xPrintable.setPrinter(printerDesc);
} catch (com.sun.star.lang.IllegalArgumentException e) {
logger.error(e.getMessage());
}
super.modifyDocument(document);
}
};
conversionTask.setDefaultLoadProperties(createDefaultLoadProperties());
conversionTask.setInputFormat(inputFormat);
officeManager.execute(conversionTask);
}
};
I am using ICEPDF to show and print a PDF doc within my Java Application.
I get the following exception:
org.icepdf.core.pobjects.Catalog <clinit>
INFO: ICEsoft ICEpdf Core 4.1.4
Exception in thread "Thread-4" java.lang.ArrayIndexOutOfBoundsException: 0
at org.icepdf.ri.common.PrintHelper.getSetupDialog(PrintHelper.java:526)
at org.icepdf.ri.common.PrintHelper.setupPrintService(PrintHelper.java:199)
at org.icepdf.ri.common.SwingController.initialisePrinting(SwingController.java:2590)
at org.icepdf.ri.common.SwingController.access$400(SwingController.java:102)
at org.icepdf.ri.common.SwingController$3.run(SwingController.java:2548)
at java.lang.Thread.run(Thread.java:680)
The code I am using is:
public class ViewerComponentExample {
public static void main(String[] args) {
// Get a file from the command line to open
String filePath = "boll.pdf";
// build a component controller
SwingController controller = new SwingController();
SwingViewBuilder factory = new SwingViewBuilder(controller);
JPanel viewerComponentPanel = factory.buildViewerPanel();
// add interactive mouse link annotation support via callback
controller.getDocumentViewController().setAnnotationCallback(
new org.icepdf.ri.common.MyAnnotationCallback(
controller.getDocumentViewController()));
JFrame applicationFrame = new JFrame();
applicationFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
applicationFrame.getContentPane().add(viewerComponentPanel);
// Now that the GUI is all in place, we can try openning a PDF
controller.openDocument(filePath);
// show the component
applicationFrame.pack();
applicationFrame.setVisible(true);
}
}
The above shows the viewer fine and it allows all operations apart from printing! (see exception above).
Any help is highly appreciated.
Thanks
Unfortunatly, this exception appears when no printer is available on you OS.
Here is the icepdf source code:
return ServiceUI.printDialog(graphicsConfiguration,
point.x,
point.y,
services, services[0],
DocFlavor.SERVICE_FORMATTED.PRINTABLE,
printRequestAttributeSet);
"services" is defined like this:
private PrintService[] lookForPrintServices() {
PrintService[] services = PrintServiceLookup.lookupPrintServices(
DocFlavor.SERVICE_FORMATTED.PRINTABLE, null);
PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
if (defaultService != null && services.length > 1) {
PrintService printService;
for (int i = 1, max = services.length; i < max; i++) {
printService = services[i];
if (printService.equals(defaultService)) {
PrintService tmp = services[0];
services[0] = defaultService;
services[i] = tmp;
break;
}
}
}
return services;
}
If no services match, the "services" array is zero-length:
http://docs.oracle.com/javase/6/docs/api/javax/print/PrintServiceLookup.html#lookupPrintServices(javax.print.DocFlavor, javax.print.attribute.AttributeSet)
Maybe a solution would be to create a "/dev/null" printer. I don't know how if this is easy to do...