* tif图片预览，在application.properties中加入tif.preview.type = ${KK_TIF_PREVIEW_TYPE:tif}，可以控制使用tif、jpg、pdf方式预览。

修改相应代码，加入必要的判断处理。

server/pom.xml

@@ -260,6 +260,7 @@
             <groupId>javax.media</groupId>
             <artifactId>jai_core</artifactId>
             <version>1.1.2-beta</version>
+            <scope>system</scope>
             <systemPath>${basedir}/lib/jai_core-1.1.2-beta.jar</systemPath>
         </dependency>
 
@@ -267,6 +268,7 @@
             <groupId>javax.media</groupId>
             <artifactId>jai_codec</artifactId>
             <version>1.1.3</version>
+            <scope>system</scope>
             <systemPath>${basedir}/lib/jai_codec-1.1.3.jar</systemPath>
         </dependency>
 

server/src/main/config/application.properties

@@ -106,3 +106,6 @@ watermark.height = ${WATERMARK_HEIGHT:80}
 #水印倾斜度数，要求设置在大于等于0，小于90
 watermark.angle = ${WATERMARK_ANGLE:10}
 
+#Tif类型图片浏览模式：tif（利用前端js插件浏览）；jpg（转换为jpg后前端显示）；pdf（转换为pdf后显示，便于打印）
+tif.preview.type = ${KK_TIF_PREVIEW_TYPE:tif}
+

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

@@ -37,6 +37,7 @@ public class ConfigConstants {
     private static CopyOnWriteArraySet<String> trustHostSet;
     private static String pdfDownloadDisable;
     private static Boolean fileUploadDisable;
+    private static String tifPreviewType;
 
     public static final String DEFAULT_CACHE_ENABLED = "true";
     public static final String DEFAULT_TXT_TYPE = "txt,html,htm,asp,jsp,xml,json,properties,md,gitignore,log,java,py,c,cpp,sql,sh,bat,m,bas,prg,cmd";
@@ -52,7 +53,7 @@ public class ConfigConstants {
     public static final String DEFAULT_TRUST_HOST = "default";
     public static final String DEFAULT_PDF_DOWNLOAD_DISABLE = "true";
     public static final String DEFAULT_FILE_UPLOAD_DISABLE = "false";
-
+    public static final String DEFAULT_TIF_PREVIEW_TYPE = "jpg";
 
     public static Boolean isCacheEnabled() {
         return cacheEnabled;
@@ -284,4 +285,18 @@ public class ConfigConstants {
     public static void setFileUploadDisableValue(Boolean fileUploadDisable) {
         ConfigConstants.fileUploadDisable = fileUploadDisable;
     }
+
+
+    public static String getTifPreviewType() {
+        return tifPreviewType;
+    }
+
+    @Value("${tif.preview.type:tif}")
+    public void setTifPreviewType(String tifPreviewType) {
+        setTifPreviewTypeValue(tifPreviewType);
+    }
+
+    public static void setTifPreviewTypeValue(String tifPreviewType) {
+        ConfigConstants.tifPreviewType = tifPreviewType;
+    }
 }

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

@@ -49,6 +49,8 @@ public class ConfigRefreshComponent {
                 String trustHost;
                 String pdfDownloadDisable;
                 boolean fileUploadDisable;
+                String tifPreviewType;
+
                 while (true) {
                     FileReader fileReader = new FileReader(configFilePath);
                     BufferedReader bufferedReader = new BufferedReader(fileReader);
@@ -68,6 +70,8 @@ public class ConfigRefreshComponent {
                     trustHost = properties.getProperty("trust.host", ConfigConstants.DEFAULT_TRUST_HOST);
                     pdfDownloadDisable = properties.getProperty("pdf.download.disable", ConfigConstants.DEFAULT_PDF_DOWNLOAD_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);
+
                     ConfigConstants.setCacheEnabledValueValue(cacheEnabled);
                     ConfigConstants.setSimTextValue(textArray);
                     ConfigConstants.setMediaValue(mediaArray);
@@ -80,6 +84,7 @@ public class ConfigRefreshComponent {
                     ConfigConstants.setOfficePreviewSwitchDisabledValue(officePreviewSwitchDisabled);
                     ConfigConstants.setPdfDownloadDisableValue(pdfDownloadDisable);
                     ConfigConstants.setFileUploadDisableValue(fileUploadDisable);
+                    ConfigConstants.setTifPreviewTypeValue(tifPreviewType);
                     setWatermarkConfig(properties);
                     bufferedReader.close();
                     fileReader.close();

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

@@ -15,6 +15,7 @@ public interface FilePreview {
     String COMPRESS_FILE_PREVIEW_PAGE = "compress";
     String MEDIA_FILE_PREVIEW_PAGE = "media";
     String PICTURE_FILE_PREVIEW_PAGE = "picture";
+    String TIFF_FILE_PREVIEW_PAGE = "tiff";
     String OFD_FILE_PREVIEW_PAGE = "ofd";
     String OFFICE_PICTURE_FILE_PREVIEW_PAGE = "officePicture";
     String TXT_FILE_PREVIEW_PAGE = "txt";

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

@@ -7,9 +7,11 @@ import cn.keking.model.ReturnResponse;
 import cn.keking.service.FilePreview;
 import cn.keking.utils.ConvertPicUtil;
 import cn.keking.utils.DownloadUtils;
+import cn.keking.utils.WebUtils;
 import cn.keking.web.filter.BaseUrlFilter;
 import org.springframework.stereotype.Service;
 import org.springframework.ui.Model;
+import org.springframework.util.StringUtils;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -25,6 +27,9 @@ import java.util.UUID;
 public class TiffFilePreviewImpl implements FilePreview {
 
     private final PictureFilePreviewImpl pictureFilePreview;
+    private static final String INITIALIZE_MEMORY_SIZE = "initializeMemorySize";
+    //默认初始化 50MB 内存
+    private static final long INITIALIZE_MEMORY_SIZE_VALUE_DEFAULT = 1024L * 1024 * 50;
 
     private final String fileDir = ConfigConstants.getFileDir();
 
@@ -34,55 +39,72 @@ public class TiffFilePreviewImpl implements FilePreview {
 
     @Override
     public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
-        String inputFileName = url.substring(url.lastIndexOf("/") + 1);
-        String inputFileExt = inputFileName.substring(inputFileName.lastIndexOf(".") + 1);
-        String uuid = UUID.randomUUID().toString().replaceAll("-","");
-        String tiffFileName = uuid + "." + inputFileExt;
-
-        ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, tiffFileName);
-        if (response.isFailure()) {
-            return NOT_SUPPORTED_FILE_PAGE;
-        }
-        String strTiffPath = response.getContent();
 
-        File fileTiff = new File(strTiffPath);
+        String tifPreviewType = ConfigConstants.getTifPreviewType();
+
+        if("tif".equalsIgnoreCase(tifPreviewType)){
+
+            pictureFilePreview.filePreviewHandle(url,model,fileAttribute);
+            String fileSize = WebUtils.getUrlParameterReg(url,INITIALIZE_MEMORY_SIZE);
+            if(StringUtils.hasText(fileSize)){
+                model.addAttribute(INITIALIZE_MEMORY_SIZE,fileSize);
+            }else {
+                model.addAttribute(INITIALIZE_MEMORY_SIZE,Long.toString(INITIALIZE_MEMORY_SIZE_VALUE_DEFAULT));
+            }
+            return TIFF_FILE_PREVIEW_PAGE;
 
-        File fileJpg = ConvertPicUtil.convertPic2Jpg(strTiffPath, fileDir + uuid + ".jpg");
+        }else if("jpg".equalsIgnoreCase(tifPreviewType) || "pdf".equalsIgnoreCase(tifPreviewType)){
+            String inputFileName = url.substring(url.lastIndexOf("/") + 1);
+            String inputFileExt = inputFileName.substring(inputFileName.lastIndexOf(".") + 1);
+            String uuid = UUID.randomUUID().toString().replaceAll("-","");
+            String tiffFileName = uuid + "." + inputFileExt;
 
-        if(fileJpg.exists()){
-            // 转换后的tif没用了，可以删掉了
-            fileTiff.delete();
+            ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, tiffFileName);
+            if (response.isFailure()) {
+                return NOT_SUPPORTED_FILE_PAGE;
+            }
+            String strTiffPath = response.getContent();
 
-            String baseUrl = BaseUrlFilter.getBaseUrl();
-            if("pdf".equalsIgnoreCase(fileAttribute.getOfficePreviewType())){
-                File filePdf = ConvertPicUtil.convertJpg2Pdf(fileDir + uuid + ".jpg", fileDir + uuid + ".pdf");
-                if(filePdf.exists()){
-                    // 转换后的jpg没用了，可以删掉了
-                    fileJpg.delete();
+            File fileTiff = new File(strTiffPath);
 
-                    String pdfUrl = baseUrl + uuid + ".pdf";
-                    model.addAttribute("pdfUrl", pdfUrl);
+            File fileJpg = ConvertPicUtil.convertPic2Jpg(strTiffPath, fileDir + uuid + ".jpg");
 
-                    return PDF_FILE_PREVIEW_PAGE;
-                }
-            }else{
-                String jpgUrl = baseUrl + uuid + ".jpg";
+            if(fileJpg.exists()){
+                // 转换后的tif没用了，可以删掉了
+                fileTiff.delete();
 
-                fileAttribute.setName(uuid + ".jpg");
-                fileAttribute.setType(FileType.PICTURE);
-                fileAttribute.setSuffix("jpg");
-                fileAttribute.setUrl(jpgUrl);
+                String baseUrl = BaseUrlFilter.getBaseUrl();
+                if("pdf".equalsIgnoreCase(tifPreviewType)){
+                    File filePdf = ConvertPicUtil.convertJpg2Pdf(fileDir + uuid + ".jpg", fileDir + uuid + ".pdf");
+                    if(filePdf.exists()){
+                        // 转换后的jpg没用了，可以删掉了
+                        fileJpg.delete();
 
-                List<String> imgUrls = new ArrayList<>();
-                imgUrls.add(jpgUrl);
+                        String pdfUrl = baseUrl + uuid + ".pdf";
+                        model.addAttribute("pdfUrl", pdfUrl);
+
+                        return PDF_FILE_PREVIEW_PAGE;
+                    }
+                }else{
+                    String jpgUrl = baseUrl + uuid + ".jpg";
+
+                    fileAttribute.setName(uuid + ".jpg");
+                    fileAttribute.setType(FileType.PICTURE);
+                    fileAttribute.setSuffix("jpg");
+                    fileAttribute.setUrl(jpgUrl);
+
+                    List<String> imgUrls = new ArrayList<>();
+                    imgUrls.add(jpgUrl);
+
+                    model.addAttribute("imgUrls", imgUrls);
+                    model.addAttribute("currentUrl", jpgUrl);
+                }
 
-                model.addAttribute("imgUrls", imgUrls);
-                model.addAttribute("currentUrl", jpgUrl);
             }
 
+            return PICTURE_FILE_PREVIEW_PAGE;
         }
 
-        return PICTURE_FILE_PREVIEW_PAGE;
-
+        return NOT_SUPPORTED_FILE_PAGE;
     }
 }