openjdk version “1.8.0_212”
package jin.pdf;
import com.aspose.pdf.Annotation;
import com.aspose.pdf.Document;
import com.aspose.pdf.Page;
import com.aspose.pdf.optimization.ImageCompressionVersion;
import com.aspose.pdf.optimization.ImageEncoding;
import com.aspose.pdf.optimization.OptimizationOptions;
import jin.office.AsposeTotalClient;
import java.util.concurrent.atomic.AtomicInteger;
public class AsposePdfProcess2 {
public void loadLicense() {
com.aspose.words.License aposeLic = new com.aspose.words.License();
try {
aposeLic.setLicense(AsposeTotalClient.class.getClassLoader()
.getResourceAsStream("Aspose.Total.Java.lic"));
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
AsposePdfProcess2 pdfProcess = new AsposePdfProcess2();
pdfProcess.loadLicense();
String fileName = "9154933.pdf";
pdfProcess.pdfCompress(fileName,2);
System.out.println("end--------------------");
}
public void pdfCompress(String fileName, int level){
try {
System.out.println("compress"+"\t" +fileName+"\t" +level);
long l = System.currentTimeMillis();
String compressStr = "重度";
int quality = 10;
int compressionLevel = ImageCompressionVersion.Standard;
if(level == 1){
compressStr = "轻度";
quality = 80;
compressionLevel = ImageCompressionVersion.Fast;
}else if(level == 2){
compressStr = "中度";
quality = 50;
compressionLevel = ImageCompressionVersion.Mixed;
}
String inputFile = "/home/jin/Desktop/pdfCompress/111/" + fileName;
String outputFile = "/home/jin/Desktop/pdfCompress/111/aspose_compress_" + level + "_" + fileName;
Document pdfDocument = new Document(inputFile);
pdfDocument.optimize();
// Optimize PDF document using OptimizationOptions
pdfDocument.optimizeResources(setOptions(quality, compressionLevel));
FlatteningAnnotations(pdfDocument);
pdfDocument.save(outputFile);
System.out.println("time：" + (System.currentTimeMillis() - l)/1000 +"\t"+ fileName +"\t" + compressStr );
}catch (Exception e){
e.printStackTrace();
}
}
public OptimizationOptions setOptions(Integer quality, Integer imageCompressionVersion) {
// Initialize OptimizationOptions
OptimizationOptions optimizationOptions = new OptimizationOptions();
// Set CompressImages option
optimizationOptions.getImageCompressionOptions().setCompressImages(true);
// Set ImageQuality option
optimizationOptions.getImageCompressionOptions().setImageQuality(quality == null ? 50 : quality);
// Set Image Compression Version to fast
optimizationOptions.getImageCompressionOptions().setVersion(imageCompressionVersion);// ImageCompressionVersion.Fast);
//RemovingUnusedObjects
optimizationOptions.setRemoveUnusedObjects(true);
//RemovingUnusedStream
optimizationOptions.setRemoveUnusedStreams(true);
//LinkingDuplicateStream
optimizationOptions.setAllowReusePageContent(true);
//FlateDecode 压缩
optimizationOptions.getImageCompressionOptions().setEncoding(ImageEncoding.Flate);
return optimizationOptions;
}
public static void FlatteningAnnotations(Document pdfDocument) {
for (Page page : pdfDocument.getPages()) {
for (Annotation annotation : page.getAnnotations())
annotation.flatten();
}
}
}