新功能点，加入CAD图纸.dwg文件预览

jodconverter-web/src/main/java/cn/keking/utils/CadToPdf.java

@@ -0,0 +1,50 @@
+package cn.keking.utils;
+
+import com.aspose.cad.Color;
+import com.aspose.cad.fileformats.cad.CadDrawTypeMode;
+import com.aspose.cad.imageoptions.CadRasterizationOptions;
+import com.aspose.cad.imageoptions.PdfOptions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+
+/**
+ * @author chenjhc
+ * @since 2019/11/21 14:34
+ */
+@Component
+public class CadToPdf {
+
+    private final Logger logger = LoggerFactory.getLogger(CadToPdf.class);
+
+    public boolean cadToPdf(String inputFilePath, String outputFilePath)  {
+        com.aspose.cad.Image cadImage = com.aspose.cad.Image.load(inputFilePath);
+        CadRasterizationOptions cadRasterizationOptions = new CadRasterizationOptions();
+        cadRasterizationOptions.setLayouts(new String[]{"Model"});
+        cadRasterizationOptions.setNoScaling(true);
+        cadRasterizationOptions.setBackgroundColor(Color.getWhite());
+        cadRasterizationOptions.setPageWidth(cadImage.getWidth());
+        cadRasterizationOptions.setPageHeight(cadImage.getHeight());
+        cadRasterizationOptions.setPdfProductLocation("center");
+        cadRasterizationOptions.setAutomaticLayoutsScaling(true);
+        cadRasterizationOptions.setDrawType(CadDrawTypeMode.UseObjectColor);
+        PdfOptions pdfOptions = new PdfOptions();
+        pdfOptions.setVectorRasterizationOptions(cadRasterizationOptions);
+        File outputFile = new File(outputFilePath);
+        OutputStream stream = null;
+        try {
+            stream = new FileOutputStream(outputFile);
+            cadImage.save(stream, pdfOptions);
+            cadImage.close();
+            return true;
+        } catch (FileNotFoundException e) {
+            logger.error("PDFFileNotFoundException", e);
+            return false;
+        }
+    }
+}

jodconverter-web/src/main/java/cn/keking/utils/FileUtils.java

@@ -91,9 +91,12 @@ public class FileUtils {
         if (Arrays.asList(media).contains(fileType.toLowerCase())) {
             return FileType.media;
         }
-        if("pdf".equalsIgnoreCase(fileType)){
+        if ("pdf".equalsIgnoreCase(fileType)) {
             return FileType.pdf;
         }
+        if ("dwg".equalsIgnoreCase(fileType)) {
+            return FileType.cad;
+        }
         return FileType.other;
     }
     /**