CAD格式新增支持 转换成svg tif 格式

CAD 转换新增 超时结束方法

server/src/main/config/application.properties

@@ -137,4 +137,6 @@ delete.source.file = ${KK_DELETE_SOURCE_FILE:true}
 #配置PDF文件生成图片的像素大小，dpi 越高，图片质量越清晰，同时也会消耗更多的计算资源。
 pdf2jpg.dpi = ${KK_PDF2JPG_DPI:144}
 #xlsx格式前端解析
-office.type.web = ${KK_OFFICE_TYPE_WEB:web}
+office.type.web = ${KK_OFFICE_TYPE_WEB:web}
+#Cad类型图片浏览模式：tif（利用前端js插件浏览）；svg（转换为svg显示）；pdf（转换为pdf后显示，便于打印）
+cad.preview.type = ${KK_CAD_PREVIEW_TYPE:pdf}

server/src/main/java/cn/keking/config/ConfigConstants.java

@@ -48,6 +48,7 @@ public class ConfigConstants {
     private static String password;
     private static int pdf2JpgDpi;
     private static String officeTypeWeb;
+    private static String cadPreviewType;
     private static Boolean deleteSourceFile;
 
     public static final String DEFAULT_CACHE_ENABLED = "true";
@@ -69,6 +70,7 @@ public class ConfigConstants {
     public static final String DEFAULT_PDF_BOOKMARK_DISABLE = "true";
     public static final String DEFAULT_FILE_UPLOAD_DISABLE = "false";
     public static final String DEFAULT_TIF_PREVIEW_TYPE = "tif";
+    public static final String DEFAULT_CAD_PREVIEW_TYPE = "pdf";
     public static final String DEFAULT_BEIAN = "无";
     public static final String DEFAULT_SIZE = "500MB";
     public static final String DEFAULT_PROHIBIT = "exe,dll";
@@ -445,6 +447,21 @@ public class ConfigConstants {
         setDeleteSourceFileValue(deleteSourceFile);
     }
 
+
+
+    public static String getCadPreviewType() {
+        return cadPreviewType;
+    }
+
+    @Value("${cad.preview.type:pdf}")
+    public void setCadPreviewType(String cadPreviewType) {
+        setCadPreviewTypeValue(cadPreviewType);
+    }
+
+    public static void setCadPreviewTypeValue(String cadPreviewType) {
+        ConfigConstants.cadPreviewType = cadPreviewType;
+    }
+
     public static void setDeleteSourceFileValue(Boolean deleteSourceFile) {
         ConfigConstants.deleteSourceFile = deleteSourceFile;
     }

server/src/main/java/cn/keking/config/ConfigRefreshComponent.java

@@ -60,6 +60,7 @@ public class ConfigRefreshComponent {
                 String password;
                 int pdf2JpgDpi;
                 String officeTypeWeb;
+                String cadPreviewType;
                 boolean deleteSourceFile;
                 while (true) {
                     FileReader fileReader = new FileReader(configFilePath);
@@ -85,6 +86,7 @@ public class ConfigRefreshComponent {
                     pdfBookmarkDisable = properties.getProperty("pdf.bookmark.disable", ConfigConstants.DEFAULT_PDF_BOOKMARK_DISABLE);
                     fileUploadDisable = Boolean.parseBoolean(properties.getProperty("file.upload.disable", ConfigConstants.DEFAULT_FILE_UPLOAD_DISABLE));
                     tifPreviewType = properties.getProperty("tif.preview.type", ConfigConstants.DEFAULT_TIF_PREVIEW_TYPE);
+                    cadPreviewType = properties.getProperty("cad.preview.type", ConfigConstants.DEFAULT_CAD_PREVIEW_TYPE);
                     size = properties.getProperty("spring.servlet.multipart.max-file-size", ConfigConstants.DEFAULT_SIZE);
                     beian = properties.getProperty("beian", ConfigConstants.DEFAULT_BEIAN);
                     prohibit = properties.getProperty("prohibit", ConfigConstants.DEFAULT_PROHIBIT);
@@ -111,6 +113,7 @@ public class ConfigRefreshComponent {
                     ConfigConstants.setPdfBookmarkDisableValue(pdfBookmarkDisable);
                     ConfigConstants.setFileUploadDisableValue(fileUploadDisable);
                     ConfigConstants.setTifPreviewTypeValue(tifPreviewType);
+                    ConfigConstants.setCadPreviewTypeValue(cadPreviewType);
                     ConfigConstants.setBeianValue(beian);
                     ConfigConstants.setSizeValue(size);
                     ConfigConstants.setProhibitValue(prohibitArray);

server/src/main/java/cn/keking/service/FileHandlerService.java

@@ -9,12 +9,13 @@ import cn.keking.utils.EncodingDetects;
 import cn.keking.utils.KkFileUtils;
 import cn.keking.utils.WebUtils;
 import cn.keking.web.filter.BaseUrlFilter;
-import com.aspose.cad.CodePages;
-import com.aspose.cad.Color;
-import com.aspose.cad.Image;
-import com.aspose.cad.LoadOptions;
+import com.aspose.cad.*;
+import com.aspose.cad.fileformats.tiff.enums.TiffExpectedFormat;
 import com.aspose.cad.imageoptions.CadRasterizationOptions;
 import com.aspose.cad.imageoptions.PdfOptions;
+import com.aspose.cad.imageoptions.SvgOptions;
+import com.aspose.cad.imageoptions.TiffOptions;
+import com.aspose.cad.internal.Exceptions.TimeoutException;
 import com.itextpdf.text.pdf.PdfReader;
 import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.apache.pdfbox.pdmodel.PDDocument;
@@ -38,6 +39,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.concurrent.*;
 import java.util.stream.IntStream;
 
 /**
@@ -52,7 +54,7 @@ public class FileHandlerService {
     private final Logger logger = LoggerFactory.getLogger(FileHandlerService.class);
     private final String fileDir = ConfigConstants.getFileDir();
     private final CacheService cacheService;
-
+    private final InterruptionTokenSource source = new com.aspose.cad.InterruptionTokenSource(); //CAD延时
     @Value("${server.tomcat.uri-encoding:UTF-8}")
     private String uriEncoding;
 
@@ -143,6 +145,10 @@ public class FileHandlerService {
         cacheService.putImgCache(fileKey, imgs);
     }
 
+    /**
+     cad定义线程池
+     */
+    private static final ExecutorService pool = Executors.newFixedThreadPool(1);
     /**
      * 对转换后的文件进行操作(改变编码方式)
      *
@@ -297,11 +303,12 @@ public class FileHandlerService {
      * @param outputFilePath pdf输出文件路径
      * @return 转换是否成功
      */
-    public String cadToPdf(String inputFilePath, String outputFilePath)  throws Exception  {
+    public String cadToPdf(String inputFilePath, String outputFilePath ,String  cadPreviewType)  throws Exception  {
+        Callable<String> call = () -> {
         File outputFile = new File(outputFilePath);
         LoadOptions opts = new LoadOptions();
         opts.setSpecifiedEncoding(CodePages.SimpChinese);
-        com.aspose.cad.Image cadImage = Image.load(inputFilePath, opts);
+        Image cadImage = Image.load(inputFilePath, opts);
         CadRasterizationOptions cadRasterizationOptions = new CadRasterizationOptions();
         cadRasterizationOptions.setBackgroundColor(Color.getWhite());
         cadRasterizationOptions.setPageWidth(1400);
@@ -309,12 +316,40 @@ public class FileHandlerService {
         cadRasterizationOptions.setAutomaticLayoutsScaling(true);
         cadRasterizationOptions.setNoScaling(false);
         cadRasterizationOptions.setDrawType(1);
-        PdfOptions pdfOptions = new PdfOptions();
-        pdfOptions.setVectorRasterizationOptions(cadRasterizationOptions);
+        SvgOptions SvgOptions = null;
+        PdfOptions pdfOptions = null;
+        TiffOptions TiffOptions  = null;
+        switch (cadPreviewType) {  //新增格式方法
+            case "svg":
+                SvgOptions = new SvgOptions();
+                SvgOptions.setVectorRasterizationOptions(cadRasterizationOptions);
+                SvgOptions.setInterruptionToken(source.getToken());
+                break;
+            case "pdf":
+                pdfOptions = new PdfOptions();
+                pdfOptions.setVectorRasterizationOptions(cadRasterizationOptions);
+                pdfOptions.setInterruptionToken(source.getToken());
+                break;
+            case "tif":
+                TiffOptions = new TiffOptions(TiffExpectedFormat.TiffJpegRgb);
+                TiffOptions.setVectorRasterizationOptions(cadRasterizationOptions);
+                TiffOptions.setInterruptionToken(source.getToken());
+                break;
+        }
         OutputStream stream = null;
         try {
             stream = new FileOutputStream(outputFile);
-            cadImage.save(stream, pdfOptions);
+            switch (cadPreviewType) {
+                case "svg":
+                    cadImage.save(stream, SvgOptions);
+                    break;
+                case "pdf":
+                    cadImage.save(stream, pdfOptions);
+                    break;
+                case "tif":
+                    cadImage.save(stream, TiffOptions);
+                    break;
+            }
         } catch (IOException e) {
             logger.error("PDFFileNotFoundException，inputFilePath：{}", inputFilePath, e);
             return "null";
@@ -325,6 +360,27 @@ public class FileHandlerService {
             if (cadImage != null) {   //关闭
                 cadImage.close();
             }
+            source.interrupt();  //结束任务
+            source.dispose();
+        }
+        return "true";
+        };
+        Future<String> result = pool.submit(call);
+        try {
+            // 如果在超时时间内，没有数据返回：则抛出TimeoutException异常
+            result.get(60, TimeUnit.SECONDS);
+        } catch (InterruptedException e) {
+            System.out.println("InterruptedException发生");
+            return "null";
+        } catch (ExecutionException e) {
+            System.out.println("ExecutionException发生");
+            return "null";
+        } catch (TimeoutException e) {
+            System.out.println("TimeoutException发生，意味着线程超时报错");
+            return "null";
+        } finally {
+            source.interrupt();  //结束任务
+            source.dispose();
         }
         return "true";
     }

server/src/main/java/cn/keking/service/impl/CadFilePreviewImpl.java

@@ -3,17 +3,15 @@ package cn.keking.service.impl;
 import cn.keking.config.ConfigConstants;
 import cn.keking.model.FileAttribute;
 import cn.keking.model.ReturnResponse;
+import cn.keking.service.FileHandlerService;
 import cn.keking.service.FilePreview;
 import cn.keking.utils.DownloadUtils;
-import cn.keking.service.FileHandlerService;
 import cn.keking.utils.KkFileUtils;
 import cn.keking.web.filter.BaseUrlFilter;
 import org.springframework.stereotype.Service;
 import org.springframework.ui.Model;
 import org.springframework.util.StringUtils;
 
-import java.util.List;
-
 import static cn.keking.service.impl.OfficeFilePreviewImpl.getPreviewType;
 
 /**
@@ -43,7 +41,8 @@ public class CadFilePreviewImpl implements FilePreview {
         boolean forceUpdatedCache=fileAttribute.forceUpdatedCache();
         String fileName = fileAttribute.getName();
         String suffix = fileAttribute.getSuffix();
-        String pdfName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix +"." + "pdf" ; //生成文件添加类型后缀 防止同名文件
+        String cadPreviewType = ConfigConstants.getCadPreviewType();
+        String pdfName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix +"." + cadPreviewType ; //生成文件添加类型后缀 防止同名文件
         String outFilePath = FILE_DIR + pdfName;
         // 判断之前是否已转换过，如果转换过，直接返回，否则执行转换
         if (forceUpdatedCache || !fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
@@ -56,7 +55,7 @@ public class CadFilePreviewImpl implements FilePreview {
             String imageUrls = null;
             if (StringUtils.hasText(outFilePath)) {
                 try {
-                    imageUrls =  fileHandlerService.cadToPdf(filePath, outFilePath);
+                    imageUrls =  fileHandlerService.cadToPdf(filePath, outFilePath,cadPreviewType);
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
@@ -73,12 +72,17 @@ public class CadFilePreviewImpl implements FilePreview {
                 }
             }
         }
+        if("tif".equalsIgnoreCase(cadPreviewType)){
+            model.addAttribute("currentUrl", pdfName);
+            return TIFF_FILE_PREVIEW_PAGE;
+        }else if("svg".equalsIgnoreCase(cadPreviewType)){
+            model.addAttribute("currentUrl", pdfName);
+            return SVG_FILE_PREVIEW_PAGE;
+        }
         if (baseUrl != null && (OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType) || OFFICE_PREVIEW_TYPE_ALL_IMAGES.equals(officePreviewType))) {
             return getPreviewType(model, fileAttribute, officePreviewType, baseUrl, pdfName, outFilePath, fileHandlerService, OFFICE_PREVIEW_TYPE_IMAGE,otherFilePreview);
         }
         model.addAttribute("pdfUrl", pdfName);
         return PDF_FILE_PREVIEW_PAGE;
     }
-
-
 }