mirror of
https://github.com/sismics/docs.git
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Index and generate thumbnails from PDF
This commit is contained in:
parent
4f8076427b
commit
d3f59554f8
@ -117,6 +117,11 @@
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<artifactId>imgscalr-lib</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.pdfbox</groupId>
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<artifactId>pdfbox</artifactId>
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</dependency>
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<!-- OCR dependencies -->
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<dependency>
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<groupId>jna</groupId>
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@ -3,11 +3,11 @@ package com.sismics.docs.core.event;
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import com.google.common.base.Objects;
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/**
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* OCR all files in database event.
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* Extract file content event.
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*
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* @author bgamard
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*/
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public class OcrFileAsyncEvent {
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public class ExtractFileAsyncEvent {
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@Override
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public String toString() {
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return Objects.toStringHelper(this)
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@ -9,33 +9,33 @@ import org.slf4j.LoggerFactory;
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import com.google.common.eventbus.Subscribe;
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import com.sismics.docs.core.dao.jpa.DocumentDao;
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import com.sismics.docs.core.dao.jpa.FileDao;
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import com.sismics.docs.core.event.OcrFileAsyncEvent;
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import com.sismics.docs.core.event.ExtractFileAsyncEvent;
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import com.sismics.docs.core.model.jpa.Document;
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import com.sismics.docs.core.model.jpa.File;
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import com.sismics.docs.core.util.FileUtil;
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import com.sismics.docs.core.util.TransactionUtil;
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/**
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* Listener on OCR all files in database.
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* Listener on extract content from all files.
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*
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* @author bgamard
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*/
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public class OcrFileAsyncListener {
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public class ExtractFileAsyncListener {
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/**
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* Logger.
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*/
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private static final Logger log = LoggerFactory.getLogger(OcrFileAsyncListener.class);
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private static final Logger log = LoggerFactory.getLogger(ExtractFileAsyncListener.class);
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/**
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* OCR all files.
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* Extract content from all files.
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*
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* @param ocrFileAsyncEvent OCR all files in database event
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* @param extractFileAsyncEvent Extract file content event
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* @throws Exception
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*/
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@Subscribe
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public void on(final OcrFileAsyncEvent ocrFileAsyncEvent) throws Exception {
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public void on(final ExtractFileAsyncEvent extractFileAsyncEvent) throws Exception {
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if (log.isInfoEnabled()) {
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log.info("OCR all files in database event: " + ocrFileAsyncEvent.toString());
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log.info("Extract file content event: " + extractFileAsyncEvent.toString());
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}
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TransactionUtil.handle(new Runnable() {
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@ -47,10 +47,9 @@ public class OcrFileAsyncListener {
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for (File file : fileList) {
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long startTime = System.currentTimeMillis();
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Document document = documentDao.getById(file.getDocumentId());
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String content = FileUtil.ocrFile(document, file);
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file.setContent(content);
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file.setContent(FileUtil.extractContent(document, file));
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TransactionUtil.commit();
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log.info(MessageFormat.format("File OCR-ized in {0}ms", System.currentTimeMillis() - startTime));
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log.info(MessageFormat.format("File content extracted in {0}ms", System.currentTimeMillis() - startTime));
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}
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}
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});
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@ -39,7 +39,7 @@ public class FileCreatedAsyncListener {
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// OCR the file
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final File file = fileCreatedAsyncEvent.getFile();
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long startTime = System.currentTimeMillis();
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final String content = FileUtil.ocrFile(fileCreatedAsyncEvent.getDocument(), file);
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final String content = FileUtil.extractContent(fileCreatedAsyncEvent.getDocument(), file);
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log.info(MessageFormat.format("File OCR-ized in {0}ms", System.currentTimeMillis() - startTime));
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// Store the OCR-ization result in the database
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@ -16,7 +16,7 @@ import com.sismics.docs.core.listener.async.DocumentDeletedAsyncListener;
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import com.sismics.docs.core.listener.async.DocumentUpdatedAsyncListener;
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import com.sismics.docs.core.listener.async.FileCreatedAsyncListener;
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import com.sismics.docs.core.listener.async.FileDeletedAsyncListener;
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import com.sismics.docs.core.listener.async.OcrFileAsyncListener;
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import com.sismics.docs.core.listener.async.ExtractFileAsyncListener;
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import com.sismics.docs.core.listener.async.RebuildIndexAsyncListener;
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import com.sismics.docs.core.listener.sync.DeadEventListener;
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import com.sismics.docs.core.model.jpa.Config;
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@ -82,7 +82,7 @@ public class AppContext {
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asyncEventBus.register(new DocumentUpdatedAsyncListener());
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asyncEventBus.register(new DocumentDeletedAsyncListener());
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asyncEventBus.register(new RebuildIndexAsyncListener());
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asyncEventBus.register(new OcrFileAsyncListener());
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asyncEventBus.register(new ExtractFileAsyncListener());
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}
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/**
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@ -6,11 +6,15 @@ import java.io.InputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.List;
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import javax.imageio.ImageIO;
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import net.sourceforge.tess4j.Tesseract;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.pdfbox.pdmodel.PDPage;
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import org.apache.pdfbox.util.PDFTextStripper;
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import org.imgscalr.Scalr;
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import org.imgscalr.Scalr.Method;
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import org.imgscalr.Scalr.Mode;
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@ -20,6 +24,7 @@ import org.slf4j.LoggerFactory;
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import com.sismics.docs.core.model.jpa.Document;
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import com.sismics.docs.core.model.jpa.File;
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import com.sismics.util.ImageUtil;
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import com.sismics.util.mime.MimeType;
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/**
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* File entity utilities.
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@ -33,18 +38,32 @@ public class FileUtil {
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private static final Logger log = LoggerFactory.getLogger(FileUtil.class);
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/**
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* OCR a file.
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* Extract content from a file.
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*
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* @param document Document linked to the file
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* @param file File to extract
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* @return Content extract
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*/
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public static String extractContent(Document document, File file) {
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String content = null;
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if (ImageUtil.isImage(file.getMimeType())) {
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content = ocrFile(document, file);
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} else if (file.getMimeType().equals(MimeType.APPLICATION_PDF)) {
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content = extractPdf(file);
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}
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return content;
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}
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/**
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* Optical character recognition on a file.
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*
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* @param document Document linked to the file
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* @param file File to OCR
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* @return OCR-ized content
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* @return Content extracted
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*/
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public static String ocrFile(Document document, final File file) {
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if (!ImageUtil.isImage(file.getMimeType())) {
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// The file is not OCR-izable
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return null;
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}
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private static String ocrFile(Document document, File file) {
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Tesseract instance = Tesseract.getInstance();
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java.io.File storedfile = Paths.get(DirectoryUtil.getStorageDirectory().getPath(), file.getId()).toFile();
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String content = null;
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@ -72,6 +91,35 @@ public class FileUtil {
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return content;
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}
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/**
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* Extract text from a PDF.
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*
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* @param file File to extract
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* @return Content extracted
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*/
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private static String extractPdf(File file) {
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String content = null;
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PDDocument pdfDocument = null;
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java.io.File storedfile = Paths.get(DirectoryUtil.getStorageDirectory().getPath(), file.getId()).toFile();
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try {
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PDFTextStripper stripper = new PDFTextStripper();
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pdfDocument = PDDocument.load(storedfile);
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content = stripper.getText(pdfDocument);
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} catch (IOException e) {
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log.error("Error while extracting text from the PDF " + storedfile, e);
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} finally {
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if (pdfDocument != null) {
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try {
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pdfDocument.close();
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} catch (IOException e) {
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// NOP
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}
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}
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}
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return content;
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}
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/**
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* Save a file on the storage filesystem.
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*
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@ -84,7 +132,12 @@ public class FileUtil {
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Files.copy(is, path);
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// Generate file variations
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saveVariations(file, path.toFile());
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try {
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saveVariations(file, path.toFile());
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} catch (IOException e) {
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// Don't rethrow Exception from file variations generation
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log.error("Error creating file variations", e);
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}
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}
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/**
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@ -95,8 +148,22 @@ public class FileUtil {
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* @throws IOException
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*/
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public static void saveVariations(File file, java.io.File originalFile) throws IOException {
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BufferedImage image = null;
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if (ImageUtil.isImage(file.getMimeType())) {
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BufferedImage image = ImageIO.read(originalFile);
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image = ImageIO.read(originalFile);
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} else if(file.getMimeType().equals(MimeType.APPLICATION_PDF)) {
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// Generate preview from the first page of the PDF
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PDDocument pdfDocument = PDDocument.load(originalFile);
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@SuppressWarnings("unchecked")
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List<PDPage> pageList = pdfDocument.getDocumentCatalog().getAllPages();
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if (pageList.size() > 0) {
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PDPage page = pageList.get(0);
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image = page.convertToImage();
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}
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}
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if (image != null) {
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// Generate thumbnails from image
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BufferedImage web = Scalr.resize(image, Scalr.Method.AUTOMATIC, Scalr.Mode.AUTOMATIC, 1280, Scalr.OP_ANTIALIAS);
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BufferedImage thumbnail = Scalr.resize(image, Scalr.Method.AUTOMATIC, Scalr.Mode.AUTOMATIC, 256, Scalr.OP_ANTIALIAS);
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image.flush();
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@ -1,2 +0,0 @@
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- Extract text from PDF for indexing, see PDFBox (server)
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- Make thumbnail of the first page of PDF, see PDFBox (server)
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@ -15,7 +15,7 @@
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<maven.compiler.target>1.7</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<!-- Dependencies version (external) -->
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<!-- Dependencies version (external) -->
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<org.apache.commons.commons-compress.version>1.5</org.apache.commons.commons-compress.version>
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<commons-lang.commons-lang.version>2.6</commons-lang.commons-lang.version>
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<commons-io.commons-io.version>2.1</commons-io.commons-io.version>
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@ -62,6 +62,7 @@
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<org.mortbay.jetty.jetty-maven-plugin.version>8.1.2.v20120308</org.mortbay.jetty.jetty-maven-plugin.version>
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<org.vafer.jdeb.version>1.0.1</org.vafer.jdeb.version>
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<com.samaxes.maven.minify-maven-plugin.version>1.7</com.samaxes.maven.minify-maven-plugin.version>
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<org.apache.pdfbox.pdfbox.version>1.8.2</org.apache.pdfbox.pdfbox.version>
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</properties>
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<scm>
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@ -436,24 +437,30 @@
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<version>${org.imgscalr.imgscalr-lib.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.pdfbox</groupId>
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<artifactId>pdfbox</artifactId>
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<version>${org.apache.pdfbox.pdfbox.version}</version>
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</dependency>
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<!-- OCR dependencies -->
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<dependency>
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<groupId>jna</groupId>
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<artifactId>jna</artifactId>
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<version>1.0</version>
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</dependency>
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<dependency>
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<groupId>jai</groupId>
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<artifactId>imageio</artifactId>
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<version>1.0</version>
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</dependency>
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<dependency>
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<groupId>tess4j</groupId>
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<artifactId>tess4j</artifactId>
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<version>1.0</version>
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</dependency>
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<groupId>jna</groupId>
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<artifactId>jna</artifactId>
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<version>1.0</version>
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</dependency>
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<dependency>
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<groupId>jai</groupId>
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<artifactId>imageio</artifactId>
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<version>1.0</version>
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</dependency>
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<dependency>
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<groupId>tess4j</groupId>
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<artifactId>tess4j</artifactId>
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<version>1.0</version>
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</dependency>
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</dependencies>
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</dependencyManagement>
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@ -478,64 +485,64 @@
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-install-plugin</artifactId>
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<version>2.3.1</version>
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<executions>
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<execution>
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<id>install-jna</id>
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<phase>validate</phase>
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<configuration>
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<file>${project.basedir}/lib/jna.jar</file>
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<repositoryLayout>default</repositoryLayout>
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<groupId>jna</groupId>
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<artifactId>jna</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<generatePom>true</generatePom>
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</configuration>
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<goals>
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<goal>install-file</goal>
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</goals>
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</execution>
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<execution>
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<id>install-jai-imageio</id>
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<phase>validate</phase>
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<configuration>
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<file>${project.basedir}/lib/jai_imageio.jar</file>
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<repositoryLayout>default</repositoryLayout>
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<groupId>jai</groupId>
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<artifactId>imageio</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<generatePom>true</generatePom>
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</configuration>
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<goals>
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<goal>install-file</goal>
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</goals>
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</execution>
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<execution>
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<id>install-tess4j</id>
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<phase>validate</phase>
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<configuration>
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<file>${project.basedir}/lib/tess4j.jar</file>
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<repositoryLayout>default</repositoryLayout>
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<groupId>tess4j</groupId>
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<artifactId>tess4j</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<generatePom>true</generatePom>
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</configuration>
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<goals>
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<goal>install-file</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-install-plugin</artifactId>
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<version>2.3.1</version>
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<executions>
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<execution>
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<id>install-jna</id>
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<phase>validate</phase>
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<configuration>
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<file>${project.basedir}/lib/jna.jar</file>
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<repositoryLayout>default</repositoryLayout>
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<groupId>jna</groupId>
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<artifactId>jna</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<generatePom>true</generatePom>
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</configuration>
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<goals>
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<goal>install-file</goal>
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</goals>
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</execution>
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<execution>
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<id>install-jai-imageio</id>
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<phase>validate</phase>
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<configuration>
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<file>${project.basedir}/lib/jai_imageio.jar</file>
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<repositoryLayout>default</repositoryLayout>
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<groupId>jai</groupId>
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<artifactId>imageio</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<generatePom>true</generatePom>
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</configuration>
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<goals>
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<goal>install-file</goal>
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</goals>
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</execution>
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<execution>
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<id>install-tess4j</id>
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<phase>validate</phase>
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<configuration>
|
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<file>${project.basedir}/lib/tess4j.jar</file>
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<repositoryLayout>default</repositoryLayout>
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<groupId>tess4j</groupId>
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<artifactId>tess4j</artifactId>
|
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<version>1.0</version>
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<packaging>jar</packaging>
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<generatePom>true</generatePom>
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</configuration>
|
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<goals>
|
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<goal>install-file</goal>
|
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</goals>
|
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</execution>
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|
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</executions>
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</plugin>
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</plugins>
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</build>
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</profile>
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|
@ -26,7 +26,7 @@ import com.sismics.docs.core.dao.jpa.DocumentDao;
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import com.sismics.docs.core.dao.jpa.FileDao;
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import com.sismics.docs.core.dao.jpa.criteria.DocumentCriteria;
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import com.sismics.docs.core.dao.jpa.dto.DocumentDto;
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import com.sismics.docs.core.event.OcrFileAsyncEvent;
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import com.sismics.docs.core.event.ExtractFileAsyncEvent;
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import com.sismics.docs.core.model.context.AppContext;
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import com.sismics.docs.core.model.jpa.File;
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import com.sismics.docs.core.util.ConfigUtil;
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@ -163,7 +163,7 @@ public class AppResource extends BaseResource {
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checkBaseFunction(BaseFunction.ADMIN);
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// Raise a OCR file event
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AppContext.getInstance().getAsyncEventBus().post(new OcrFileAsyncEvent());
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AppContext.getInstance().getAsyncEventBus().post(new ExtractFileAsyncEvent());
|
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JSONObject response = new JSONObject();
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response.put("status", "ok");
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|
@ -15,6 +15,7 @@ import org.codehaus.jettison.json.JSONObject;
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import org.joda.time.format.DateTimeFormat;
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import org.junit.Test;
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|
||||
import com.google.common.io.ByteStreams;
|
||||
import com.sismics.docs.rest.filter.CookieAuthenticationFilter;
|
||||
import com.sun.jersey.api.client.ClientResponse;
|
||||
import com.sun.jersey.api.client.ClientResponse.Status;
|
||||
@ -354,4 +355,67 @@ public class TestDocumentResource extends BaseJerseyTest {
|
||||
json = response.getEntity(JSONObject.class);
|
||||
Assert.assertEquals(Status.BAD_REQUEST, Status.fromStatusCode(response.getStatus()));
|
||||
}
|
||||
|
||||
/**
|
||||
* Test PDF extraction.
|
||||
*
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test
|
||||
public void testPdfExtraction() throws Exception {
|
||||
// Login document2
|
||||
clientUtil.createUser("document2");
|
||||
String document2Token = clientUtil.login("document2");
|
||||
|
||||
// Create a document
|
||||
WebResource documentResource = resource().path("/document");
|
||||
documentResource.addFilter(new CookieAuthenticationFilter(document2Token));
|
||||
MultivaluedMapImpl postParams = new MultivaluedMapImpl();
|
||||
postParams.add("title", "My super title document 1");
|
||||
postParams.add("description", "My super description for document 1");
|
||||
postParams.add("language", "eng");
|
||||
long create1Date = new Date().getTime();
|
||||
postParams.add("create_date", create1Date);
|
||||
ClientResponse response = documentResource.put(ClientResponse.class, postParams);
|
||||
Assert.assertEquals(Status.OK, Status.fromStatusCode(response.getStatus()));
|
||||
JSONObject json = response.getEntity(JSONObject.class);
|
||||
String document1Id = json.optString("id");
|
||||
Assert.assertNotNull(document1Id);
|
||||
|
||||
// Add a PDF file
|
||||
WebResource fileResource = resource().path("/file");
|
||||
fileResource.addFilter(new CookieAuthenticationFilter(document2Token));
|
||||
FormDataMultiPart form = new FormDataMultiPart();
|
||||
InputStream file = this.getClass().getResourceAsStream("/file/wikipedia.pdf");
|
||||
FormDataBodyPart fdp = new FormDataBodyPart("file",
|
||||
new BufferedInputStream(file),
|
||||
MediaType.APPLICATION_OCTET_STREAM_TYPE);
|
||||
form.bodyPart(fdp);
|
||||
form.field("id", document1Id);
|
||||
response = fileResource.type(MediaType.MULTIPART_FORM_DATA).put(ClientResponse.class, form);
|
||||
Assert.assertEquals(Status.OK, Status.fromStatusCode(response.getStatus()));
|
||||
json = response.getEntity(JSONObject.class);
|
||||
String file1Id = json.getString("id");
|
||||
|
||||
// Search documents by query in full content
|
||||
documentResource = resource().path("/document/list");
|
||||
documentResource.addFilter(new CookieAuthenticationFilter(document2Token));
|
||||
MultivaluedMapImpl getParams = new MultivaluedMapImpl();
|
||||
getParams.putSingle("search", "full:vrandecic");
|
||||
response = documentResource.queryParams(getParams).get(ClientResponse.class);
|
||||
json = response.getEntity(JSONObject.class);
|
||||
Assert.assertEquals(Status.OK, Status.fromStatusCode(response.getStatus()));
|
||||
Assert.assertTrue(json.getJSONArray("documents").length() == 1);
|
||||
|
||||
// Get the file thumbnail data
|
||||
fileResource = resource().path("/file/" + file1Id + "/data");
|
||||
fileResource.addFilter(new CookieAuthenticationFilter(document2Token));
|
||||
getParams = new MultivaluedMapImpl();
|
||||
getParams.putSingle("size", "thumb");
|
||||
response = fileResource.queryParams(getParams).get(ClientResponse.class);
|
||||
Assert.assertEquals(Status.OK, Status.fromStatusCode(response.getStatus()));
|
||||
InputStream is = response.getEntityInputStream();
|
||||
byte[] fileBytes = ByteStreams.toByteArray(is);
|
||||
Assert.assertEquals(3457, fileBytes.length);
|
||||
}
|
||||
}
|
BIN
docs-web/src/test/resources/file/wikipedia.pdf
Normal file
BIN
docs-web/src/test/resources/file/wikipedia.pdf
Normal file
Binary file not shown.
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Reference in New Issue
Block a user