From 144e391a6f49fccd3f9eb0e94bd788502bd60c57 Mon Sep 17 00:00:00 2001 From: weiweiw <14335254+weiweiw22@user.noreply.gitee.com> Date: Thu, 22 Aug 2024 14:46:31 +0800 Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0word=E6=96=87=E6=A1=A3(excel,?= =?UTF-8?q?ppt=E5=92=8Cword)=E8=BD=ACpdf=E7=9A=84=E6=8E=A5=E5=8F=A3?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../java/cn/keking/service/FilePreview.java | 1 + .../service/impl/OfficeFilePreviewImpl.java | 75 +++++++++++++++++++ .../controller/OnlinePreviewController.java | 66 +++++++++------- 3 files changed, 116 insertions(+), 26 deletions(-) diff --git a/server/src/main/java/cn/keking/service/FilePreview.java b/server/src/main/java/cn/keking/service/FilePreview.java index f867b16..cf923f1 100644 --- a/server/src/main/java/cn/keking/service/FilePreview.java +++ b/server/src/main/java/cn/keking/service/FilePreview.java @@ -36,4 +36,5 @@ public interface FilePreview { String filePreviewHandle(String url, Model model, FileAttribute fileAttribute); String fileConvert(String url, Model model, FileAttribute fileAttribute); + default String wordConvertPdf(String url, FileAttribute fileAttribute) {return "不支持的文件类型转换";}; } diff --git a/server/src/main/java/cn/keking/service/impl/OfficeFilePreviewImpl.java b/server/src/main/java/cn/keking/service/impl/OfficeFilePreviewImpl.java index f851a47..991ee64 100644 --- a/server/src/main/java/cn/keking/service/impl/OfficeFilePreviewImpl.java +++ b/server/src/main/java/cn/keking/service/impl/OfficeFilePreviewImpl.java @@ -19,9 +19,15 @@ import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Service; import org.springframework.ui.Model; +import org.springframework.util.StreamUtils; import org.springframework.util.StringUtils; +import java.io.File; import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.nio.file.Files; +import java.nio.file.Paths; import java.util.List; /** @@ -175,4 +181,73 @@ public class OfficeFilePreviewImpl implements FilePreview { } } + @Override + public String wordConvertPdf(String url,FileAttribute fileAttribute){ + // 预览Type，参数传了就取参数的，没传取系统默认 + long startime = System.currentTimeMillis(); + String officePreviewType = fileAttribute.getOfficePreviewType(); + boolean userToken = fileAttribute.getUsePasswordCache(); + String baseUrl = BaseUrlFilter.getBaseUrl(); + String suffix = fileAttribute.getSuffix(); //获取文件后缀 + String fileName = fileAttribute.getName(); //获取文件原始名称 + String filePassword = fileAttribute.getFilePassword(); //获取密码 + boolean forceUpdatedCache=fileAttribute.forceUpdatedCache(); //是否启用强制更新命令 + boolean isHtmlView = false; //xlsx 转换成html + String cacheName = fileAttribute.getCacheName(); //转换后的文件名 + String outFilePath = fileAttribute.getOutFilePath(); //转换后生成文件的路径 + + String suffix1 = KkFileUtils.suffixFromFileName(cacheName); + //将excel文档格式不转换为html，而是转换为pdf + if (suffix1.equals("html") ){ + cacheName = cacheName.substring(0, cacheName.lastIndexOf(".")+1) + "pdf"; + outFilePath = outFilePath.substring(0, outFilePath.lastIndexOf(".")+1) + "pdf"; + } + //如果有同名文件就默认为已经转换 + if (KkFileUtils.isExist(outFilePath)) { + fileHandlerService.addConvertedFile(cacheName, fileHandlerService.getRelativePath(outFilePath)); + return baseUrl + cacheName; + } + + long endtime = System.currentTimeMillis(); + System.out.println("下载前耗时：" + (endtime - startime) / 1000 + "ms"); + startime = System.currentTimeMillis(); + if (forceUpdatedCache|| !fileHandlerService.listConvertedFiles().containsKey(cacheName) || !ConfigConstants.isCacheEnabled()) { + // 下载远程文件到本地，如果文件在本地已存在不会重复下载 + ReturnResponse response = DownloadUtils.downLoad(fileAttribute, fileName); + if (response.isFailure()) { + return response.getMsg(); + } + + String filePath = response.getContent(); + boolean isPwdProtectedOffice = OfficeUtils.isPwdProtected(filePath); // 判断是否加密文件 + if (isPwdProtectedOffice && !StringUtils.hasLength(filePassword)) { + // 加密文件需要密码 + return "加密文件需要密码"; + } else { + if (StringUtils.hasText(outFilePath)) { + try { + logger.info("start to officeToPdfService.openOfficeToPDF"); + officeToPdfService.openOfficeToPDF(filePath, outFilePath, fileAttribute); + logger.info("end to officeToPdfService.openOfficeToPDF"); + } catch (OfficeException e) { + if (isPwdProtectedOffice && !OfficeUtils.isCompatible(filePath, filePassword)) { + // 加密文件密码错误，提示重新输入 + return "加密文件密码错误"; + } + return "抱歉，该文件版本不兼容，文件版本错误"; + } + //是否保留OFFICE源文件 + if (!fileAttribute.isCompressFile() && ConfigConstants.getDeleteSourceFile()) { + KkFileUtils.deleteFileByPath(filePath); + } + if (userToken || !isPwdProtectedOffice) { + // 加入缓存 + fileHandlerService.addConvertedFile(cacheName, fileHandlerService.getRelativePath(outFilePath)); + } + } + } + } + return baseUrl + cacheName; + } + } diff --git a/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java b/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java index 6b50713..51ed4d8 100644 --- a/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java +++ b/server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java @@ -88,6 +88,14 @@ public class OnlinePreviewController { return filePreview.filePreviewHandle(fileUrl, model, fileAttribute); //统一在这里处理 url } + /** + * 转换文件，用于大文件在预览前的转换 + * @param url + * @param model + * @param req + * @param token + * @return + */ @GetMapping( "/onConvert") @ResponseBody public String onConvert(String url, Model model, HttpServletRequest req, String token) { @@ -113,32 +121,38 @@ public class OnlinePreviewController { return filePreview.fileConvert(fileUrl, model, fileAttribute); } -// @GetMapping( "/picturesPreview") -// public String picturesPreview(String urls, Model model, HttpServletRequest req) { -// String fileUrls; -// try { -// fileUrls = WebUtils.decodeUrl(urls); -// // 防止XSS攻击 -// fileUrls = KkFileUtils.htmlEscape(fileUrls); -// } catch (Exception ex) { -// String errorMsg = String.format(BASE64_DECODE_ERROR_MSG, "urls"); -// return otherFilePreview.notSupportedFile(model, errorMsg); -// } -// logger.info("预览文件url：{}，urls：{}", fileUrls, urls); -// // 抽取文件并返回文件列表 -// String[] images = fileUrls.split("\\|"); -// List imgUrls = Arrays.asList(images); -// model.addAttribute("imgUrls", imgUrls); -// String currentUrl = req.getParameter("currentUrl"); -// if (StringUtils.hasText(currentUrl)) { -// String decodedCurrentUrl = new String(Base64.decodeBase64(currentUrl)); -// decodedCurrentUrl = KkFileUtils.htmlEscape(decodedCurrentUrl); // 防止XSS攻击 -// model.addAttribute("currentUrl", decodedCurrentUrl); -// } else { -// model.addAttribute("currentUrl", imgUrls.get(0)); -// } -// return PICTURE_FILE_PREVIEW_PAGE; -// } + /** + * 转换文件，用于大文件在预览前的转换 + * @param url +// * @param model + * @param req + * @param token + * @return + */ + @GetMapping( "/onConvertPdf") + @ResponseBody + public String onConvertPdf(String url, HttpServletRequest req, String token) { + + String fileUrl; + try { + if (!WebUtils.checkToken(token)) { + return "token 错误"; + } + fileUrl = WebUtils.decodeUrl(url); + } catch (Exception ex) { + String errorMsg = String.format(BASE64_DECODE_ERROR_MSG, "url"); + return errorMsg; + } + FileAttribute fileAttribute = fileHandlerService.getFileAttribute(fileUrl, req); //这里不在进行URL 处理了 + FilePreview filePreview = previewFactory.get(fileAttribute); + logger.info("转换文件url：{}，previewType：{}", fileUrl, fileAttribute.getType()); + fileUrl =WebUtils.urlEncoderencode(fileUrl); + if (ObjectUtils.isEmpty(fileUrl)) { + return "非法路径,不允许访问"; + } + return filePreview.wordConvertPdf(fileUrl, fileAttribute); + } + /** * 根据url获取文件内容