抽象通用的预览异常接口实现

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

@@ -25,9 +25,11 @@ public class CadFilePreviewImpl implements FilePreview {
     private static final String FILE_DIR = ConfigConstants.getFileDir();
 
     private final FileHandlerService fileHandlerService;
+    private final OtherFilePreviewImpl otherFilePreview;
 
-    public CadFilePreviewImpl(FileHandlerService fileHandlerService) {
+    public CadFilePreviewImpl(FileHandlerService fileHandlerService, OtherFilePreviewImpl otherFilePreview) {
         this.fileHandlerService = fileHandlerService;
+        this.otherFilePreview = otherFilePreview;
     }
 
     @Override
@@ -35,7 +37,6 @@ public class CadFilePreviewImpl implements FilePreview {
         // 预览Type，参数传了就取参数的，没传取系统默认
         String officePreviewType = model.asMap().get("officePreviewType") == null ? ConfigConstants.getOfficePreviewType() : model.asMap().get("officePreviewType").toString();
         String baseUrl = BaseUrlFilter.getBaseUrl();
-        String suffix = fileAttribute.getSuffix();
         String fileName = fileAttribute.getName();
         String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";
         String outFilePath = FILE_DIR + pdfName;
@@ -44,17 +45,13 @@ public class CadFilePreviewImpl implements FilePreview {
             String filePath;
             ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, null);
             if (response.isFailure()) {
-                model.addAttribute("fileType", suffix);
+                return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                model.addAttribute("msg", response.getMsg());
-                return "fileNotSupported";
             }
             filePath = response.getContent();
             if (StringUtils.hasText(outFilePath)) {
                 boolean convertResult = fileHandlerService.cadToPdf(filePath, outFilePath);
                 if (!convertResult) {
-                    model.addAttribute("fileType", suffix);
+                    return otherFilePreview.notSupportedFile(model, fileAttribute, "cad文件转换异常，请联系管理员");
-                    model.addAttribute("msg", "cad文件转换异常，请联系管理员");
-                    return "fileNotSupported";
                 }
                 if (ConfigConstants.isCacheEnabled()) {
                     // 加入缓存
@@ -63,7 +60,7 @@ public class CadFilePreviewImpl implements FilePreview {
             }
         }
         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);
+            return getPreviewType(model, fileAttribute, officePreviewType, baseUrl, pdfName, outFilePath, fileHandlerService, OFFICE_PREVIEW_TYPE_IMAGE,otherFilePreview);
         }
         model.addAttribute("pdfUrl", pdfName);
         return "pdf";

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

@@ -20,10 +20,12 @@ public class CompressFilePreviewImpl implements FilePreview {
 
     private final FileHandlerService fileHandlerService;
     private final CompressFileReader compressFileReader;
+    private final OtherFilePreviewImpl otherFilePreview;
 
-    public CompressFilePreviewImpl(FileHandlerService fileHandlerService, CompressFileReader compressFileReader) {
+    public CompressFilePreviewImpl(FileHandlerService fileHandlerService, CompressFileReader compressFileReader, OtherFilePreviewImpl otherFilePreview) {
         this.fileHandlerService = fileHandlerService;
         this.compressFileReader = compressFileReader;
+        this.otherFilePreview = otherFilePreview;
     }
 
     @Override
@@ -35,9 +37,7 @@ public class CompressFilePreviewImpl implements FilePreview {
         if (!StringUtils.hasText(fileHandlerService.getConvertedFile(fileName))  || !ConfigConstants.isCacheEnabled()) {
             ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileName);
             if (response.isFailure()) {
-                model.addAttribute("fileType", suffix);
+                return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                model.addAttribute("msg", response.getMsg());
-                return "fileNotSupported";
             }
             String filePath = response.getContent();
             if ("zip".equalsIgnoreCase(suffix) || "jar".equalsIgnoreCase(suffix) || "gzip".equalsIgnoreCase(suffix)) {
@@ -57,9 +57,7 @@ public class CompressFilePreviewImpl implements FilePreview {
             model.addAttribute("fileTree", fileTree);
             return "compress";
         } else {
-            model.addAttribute("fileType", suffix);
+            return otherFilePreview.notSupportedFile(model, fileAttribute, "压缩文件类型不受支持，尝试在压缩的时候选择RAR4格式");
-            model.addAttribute("msg", "压缩文件类型不受支持，尝试在压缩的时候选择RAR4格式");
-            return "fileNotSupported";
         }
     }
 }

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

@@ -19,9 +19,11 @@ import org.springframework.ui.Model;
 public class MediaFilePreviewImpl implements FilePreview {
 
     private final FileHandlerService fileHandlerService;
+    private final OtherFilePreviewImpl otherFilePreview;
 
-    public MediaFilePreviewImpl(FileHandlerService fileHandlerService) {
+    public MediaFilePreviewImpl(FileHandlerService fileHandlerService, OtherFilePreviewImpl otherFilePreview) {
         this.fileHandlerService = fileHandlerService;
+        this.otherFilePreview = otherFilePreview;
     }
 
     @Override
@@ -29,10 +31,8 @@ public class MediaFilePreviewImpl implements FilePreview {
         // 不是http开头，浏览器不能直接访问，需下载到本地
         if (url != null && !url.toLowerCase().startsWith("http")) {
             ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileAttribute.getName());
-            if (!response.isSuccess()) {
+            if (response.isFailure()) {
-                model.addAttribute("fileType", fileAttribute.getSuffix());
+                return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                model.addAttribute("msg", response.getMsg());
-                return "fileNotSupported";
             } else {
                 model.addAttribute("mediaUrl", BaseUrlFilter.getBaseUrl() + fileHandlerService.getRelativePath(response.getContent()));
             }

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

@@ -27,10 +27,12 @@ public class OfficeFilePreviewImpl implements FilePreview {
 
     private final FileHandlerService fileHandlerService;
     private final OfficeToPdfService officeToPdfService;
+    private final OtherFilePreviewImpl otherFilePreview;
 
-    public OfficeFilePreviewImpl(FileHandlerService fileHandlerService, OfficeToPdfService officeToPdfService) {
+    public OfficeFilePreviewImpl(FileHandlerService fileHandlerService, OfficeToPdfService officeToPdfService, OtherFilePreviewImpl otherFilePreview) {
         this.fileHandlerService = fileHandlerService;
         this.officeToPdfService = officeToPdfService;
+        this.otherFilePreview = otherFilePreview;
     }
 
     @Override
@@ -38,8 +40,8 @@ public class OfficeFilePreviewImpl implements FilePreview {
         // 预览Type，参数传了就取参数的，没传取系统默认
         String officePreviewType = fileAttribute.getOfficePreviewType();
         String baseUrl = BaseUrlFilter.getBaseUrl();
-        String suffix=fileAttribute.getSuffix();
+        String suffix = fileAttribute.getSuffix();
-        String fileName=fileAttribute.getName();
+        String fileName = fileAttribute.getName();
         boolean isHtml = suffix.equalsIgnoreCase("xls") || suffix.equalsIgnoreCase("xlsx");
         String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + (isHtml ? "html" : "pdf");
         String outFilePath = FILE_DIR + pdfName;
@@ -48,9 +50,7 @@ public class OfficeFilePreviewImpl implements FilePreview {
             String filePath;
             ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, null);
             if (response.isFailure()) {
-                model.addAttribute("fileType", suffix);
+                return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                model.addAttribute("msg", response.getMsg());
-                return "fileNotSupported";
             }
             filePath = response.getContent();
             if (StringUtils.hasText(outFilePath)) {
@@ -66,18 +66,16 @@ public class OfficeFilePreviewImpl implements FilePreview {
             }
         }
         if (!isHtml && 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);
+            return getPreviewType(model, fileAttribute, officePreviewType, baseUrl, pdfName, outFilePath, fileHandlerService, OFFICE_PREVIEW_TYPE_IMAGE, otherFilePreview);
         }
         model.addAttribute("pdfUrl", pdfName);
         return isHtml ? "html" : "pdf";
     }
 
-    static String getPreviewType(Model model, FileAttribute fileAttribute, String officePreviewType, String baseUrl, String pdfName, String outFilePath, FileHandlerService fileHandlerService, String officePreviewTypeImage) {
+    static String getPreviewType(Model model, FileAttribute fileAttribute, String officePreviewType, String baseUrl, String pdfName, String outFilePath, FileHandlerService fileHandlerService, String officePreviewTypeImage, OtherFilePreviewImpl otherFilePreview) {
         List<String> imageUrls = fileHandlerService.pdf2jpg(outFilePath, pdfName, baseUrl);
         if (imageUrls == null || imageUrls.size() < 1) {
-            model.addAttribute("msg", "office转图片异常，请联系管理员");
+            return otherFilePreview.notSupportedFile(model, fileAttribute, "office转图片异常，请联系管理员");
-            model.addAttribute("fileType",fileAttribute.getSuffix());
-            return "fileNotSupported";
         }
         model.addAttribute("imgurls", imageUrls);
         model.addAttribute("currentUrl", imageUrls.get(0));

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

@@ -11,10 +11,22 @@ import org.springframework.ui.Model;
  */
 @Service
 public class OtherFilePreviewImpl implements FilePreview {
+
+    public static final String NOT_SUPPORTED_FILE_PAGE = "fileNotSupported";
+
     @Override
     public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
-        model.addAttribute("fileType",fileAttribute.getSuffix());
+        return this.notSupportedFile(model,fileAttribute,"系统还不支持该格式文件的在线预览");
-        model.addAttribute("msg", "系统还不支持该格式文件的在线预览");
+    }
-        return "fileNotSupported";
+
+    /**
+     * 通用的预览失败，导向到不支持的文件响应页面
+     *
+     * @return 页面
+     */
+    public String notSupportedFile(Model model, FileAttribute fileAttribute, String errMsg) {
+        model.addAttribute("fileType", fileAttribute.getSuffix());
+        model.addAttribute("msg", errMsg);
+        return NOT_SUPPORTED_FILE_PAGE;
     }
 }

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

@@ -20,16 +20,17 @@ import java.util.List;
 public class PdfFilePreviewImpl implements FilePreview {
 
     private final FileHandlerService fileHandlerService;
+    private final OtherFilePreviewImpl otherFilePreview;
     private static final String FILE_DIR = ConfigConstants.getFileDir();
 
-    public PdfFilePreviewImpl(FileHandlerService fileHandlerService) {
+    public PdfFilePreviewImpl(FileHandlerService fileHandlerService, OtherFilePreviewImpl otherFilePreview) {
         this.fileHandlerService = fileHandlerService;
+        this.otherFilePreview = otherFilePreview;
     }
 
     @Override
     public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
-        String suffix=fileAttribute.getSuffix();
+        String fileName = fileAttribute.getName();
-        String fileName=fileAttribute.getName();
         String officePreviewType = fileAttribute.getOfficePreviewType();
         String baseUrl = BaseUrlFilter.getBaseUrl();
         String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";
@@ -39,9 +40,7 @@ public class PdfFilePreviewImpl implements FilePreview {
             if (!fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
                 ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileName);
                 if (response.isFailure()) {
-                    model.addAttribute("fileType", suffix);
+                    return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                    model.addAttribute("msg", response.getMsg());
-                    return "fileNotSupported";
                 }
                 outFilePath = response.getContent();
                 if (ConfigConstants.isCacheEnabled()) {
@@ -51,9 +50,7 @@ public class PdfFilePreviewImpl implements FilePreview {
             }
             List<String> imageUrls = fileHandlerService.pdf2jpg(outFilePath, pdfName, baseUrl);
             if (imageUrls == null || imageUrls.size() < 1) {
-                model.addAttribute("msg", "pdf转图片异常，请联系管理员");
+                return otherFilePreview.notSupportedFile(model, fileAttribute, "pdf转图片异常，请联系管理员");
-                model.addAttribute("fileType",fileAttribute.getSuffix());
-                return "fileNotSupported";
             }
             model.addAttribute("imgurls", imageUrls);
             model.addAttribute("currentUrl", imageUrls.get(0));
@@ -68,9 +65,7 @@ public class PdfFilePreviewImpl implements FilePreview {
                 if (!fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
                     ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, pdfName);
                     if (response.isFailure()) {
-                        model.addAttribute("fileType", suffix);
+                        return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                        model.addAttribute("msg", response.getMsg());
-                        return "fileNotSupported";
                     }
                     model.addAttribute("pdfUrl", fileHandlerService.getRelativePath(response.getContent()));
                     if (ConfigConstants.isCacheEnabled()) {

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

@@ -19,9 +19,11 @@ import java.util.List;
 public class PictureFilePreviewImpl implements FilePreview {
 
     private final FileHandlerService fileHandlerService;
+    private final OtherFilePreviewImpl otherFilePreview;
 
-    public PictureFilePreviewImpl(FileHandlerService fileHandlerService) {
+    public PictureFilePreviewImpl(FileHandlerService fileHandlerService, OtherFilePreviewImpl otherFilePreview) {
         this.fileHandlerService = fileHandlerService;
+        this.otherFilePreview = otherFilePreview;
     }
 
     @Override
@@ -37,9 +39,7 @@ public class PictureFilePreviewImpl implements FilePreview {
         if (url != null && !url.toLowerCase().startsWith("http")) {
             ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, null);
             if (response.isFailure()) {
-                model.addAttribute("fileType", fileAttribute.getSuffix());
+                return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-                model.addAttribute("msg", response.getMsg());
-                return "fileNotSupported";
             } else {
                 String file = fileHandlerService.getRelativePath(response.getContent());
                 imgUrls.clear();

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

@@ -23,23 +23,25 @@ public class SimTextFilePreviewImpl implements FilePreview {
     public static final String TEXT_TYPE = "textType";
     public static final String DEFAULT_TEXT_TYPE = "simText";
 
+    private final OtherFilePreviewImpl otherFilePreview;
+
+    public SimTextFilePreviewImpl(OtherFilePreviewImpl otherFilePreview) {
+        this.otherFilePreview = otherFilePreview;
+    }
+
     @Override
     public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
         String fileName = fileAttribute.getName();
         ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileName);
         if (response.isFailure()) {
-            model.addAttribute("msg", response.getMsg());
+            return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
-            model.addAttribute("fileType", fileAttribute.getSuffix());
-            return "fileNotSupported";
         }
         try {
             File originFile = new File(response.getContent());
             String xmlString = FileUtils.readFileToString(originFile, StandardCharsets.UTF_8);
             model.addAttribute("textData", Base64Utils.encodeToString(xmlString.getBytes()));
         } catch (IOException e) {
-            model.addAttribute("msg", e.getLocalizedMessage());
+            return otherFilePreview.notSupportedFile(model, fileAttribute, e.getLocalizedMessage());
-            model.addAttribute("fileType", fileAttribute.getSuffix());
-            return "fileNotSupported";
         }
         if (!model.containsAttribute(TEXT_TYPE)) {
             model.addAttribute(TEXT_TYPE, DEFAULT_TEXT_TYPE);

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

@@ -20,7 +20,6 @@ public class XmlFilePreviewImpl implements FilePreview {
         this.simTextFilePreview = simTextFilePreview;
     }
 
-
     @Override
     public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
         model.addAttribute(TEXT_TYPE,"xml");

server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java

@@ -7,7 +7,6 @@ import cn.keking.service.FilePreviewFactory;
 import cn.keking.service.cache.CacheService;
 import cn.keking.utils.DownloadUtils;
 import cn.keking.service.FileHandlerService;
-import com.thoughtworks.xstream.core.util.Base64JavaUtilCodec;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Controller;
@@ -20,7 +19,6 @@ import org.springframework.web.bind.annotation.ResponseBody;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.*;
-import java.net.URLDecoder;
 import java.util.Arrays;
 import java.util.List;
 
@@ -45,25 +43,24 @@ public class OnlinePreviewController {
     @RequestMapping(value = "/onlinePreview")
     public String onlinePreview(String url, Model model, HttpServletRequest req) {
         String fileUrl = new String(Base64Utils.decodeFromString(url));
-        FileAttribute fileAttribute = fileHandlerService.getFileAttribute(fileUrl,req);
+        FileAttribute fileAttribute = fileHandlerService.getFileAttribute(fileUrl, req);
         FilePreview filePreview = previewFactory.get(fileAttribute);
         logger.info("预览文件url：{}，previewType：{}", fileUrl, fileAttribute.getType());
         return filePreview.filePreviewHandle(fileUrl, model, fileAttribute);
     }
 
     @RequestMapping(value = "/picturesPreview")
-    public String picturesPreview(Model model, HttpServletRequest req) throws UnsupportedEncodingException {
+    public String picturesPreview(String urls, Model model, HttpServletRequest req) throws UnsupportedEncodingException {
-        String urls = req.getParameter("urls");
+        String fileUrls = new String(Base64Utils.decodeFromString(urls));
         String currentUrl = req.getParameter("currentUrl");
-        logger.info("预览文件url：{}，urls：{}", currentUrl, urls);
+        logger.info("预览文件url：{}，urls：{}", fileUrls, urls);
         // 路径转码
-        String decodedUrl = URLDecoder.decode(urls, "utf-8");
+        String decodedCurrentUrl = new String(Base64Utils.decodeFromString(currentUrl));
-        String decodedCurrentUrl = URLDecoder.decode(currentUrl, "utf-8");
         // 抽取文件并返回文件列表
-        String[] imgs = decodedUrl.split("\\|");
+        String[] imgs = fileUrls.split("\\|");
         List<String> imgUrls = Arrays.asList(imgs);
         model.addAttribute("imgUrls", imgUrls);
-        model.addAttribute("currentUrl",decodedCurrentUrl);
+        model.addAttribute("currentUrl", decodedCurrentUrl);
         return "picture";
     }
 
@@ -71,7 +68,7 @@ public class OnlinePreviewController {
      * 根据url获取文件内容
      * 当pdfjs读取存在跨域问题的文件时将通过此接口读取
      *
-     * @param urlPath url
+     * @param urlPath  url
      * @param response response
      */
     @RequestMapping(value = "/getCorsFile", method = RequestMethod.GET)
@@ -87,6 +84,7 @@ public class OnlinePreviewController {
 
     /**
      * 通过api接口入队
+     *
      * @param url 请编码后在入队
      */
     @RequestMapping("/addTask")