!51 实现预览加密的(受密码保护)office文件
* 1. 修复getCorsFile接口高危安全漏洞 * 1. 优化密码错误提示(“密码错误,请重新输入密码。”) * 1. 修复PPT重复预览bug,此bug导致ppt每次预览会执行两次转换(请求两次onlinePreview接口),在大文件尤其耗时(双倍时… * 1. 【加密office预览】优化受密码保护的office文件检查逻辑,提升旧文件格式的兼容性 * 1. 【加密office预览】优化office文件是否受密码保护判断逻辑,避免兼容性误判 * 1. 【加密office预览】优化重新输入密码提示。 * 1. 【加密office预览】优化当密码输入错误后,不是抛出异常,而是提示用户重新输入 * 1. 优化prompt提示框的输入密码提示样式 * 1. 实现基于userToken缓存加密文件,没有userToken的加密文件不缓存 * 1. 优化docker构建方案,使用分层构建方式,采用层级缓存解决构建慢发布慢等问题。从原本5分钟左右缩短至几秒 * 1. 加密文件暂时不缓存(后续基于用户token实现,基于用户缓存) * 1. 优化office文件下载逻辑,跳过重复下载(大量节约带宽与磁盘空间)。 * 1. 修复预览不同类型的加密office文件bug * 实现预览加密的(受密码保护)office文件
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@ -3,11 +3,13 @@ package cn.keking.service.impl;
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import cn.keking.config.ConfigConstants;
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import cn.keking.model.FileAttribute;
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import cn.keking.model.ReturnResponse;
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import cn.keking.service.FilePreview;
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import cn.keking.utils.DownloadUtils;
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import cn.keking.service.FileHandlerService;
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import cn.keking.service.FilePreview;
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import cn.keking.service.OfficeToPdfService;
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import cn.keking.utils.DownloadUtils;
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import cn.keking.utils.OfficeUtils;
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import cn.keking.web.filter.BaseUrlFilter;
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import org.artofsolving.jodconverter.office.OfficeException;
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import org.springframework.stereotype.Service;
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import org.springframework.ui.Model;
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import org.springframework.util.StringUtils;
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@ -42,33 +44,83 @@ public class OfficeFilePreviewImpl implements FilePreview {
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String baseUrl = BaseUrlFilter.getBaseUrl();
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String suffix = fileAttribute.getSuffix();
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String fileName = fileAttribute.getName();
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String filePassword = fileAttribute.getFilePassword();
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String userToken = fileAttribute.getUserToken();
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boolean isHtml = suffix.equalsIgnoreCase("xls") || suffix.equalsIgnoreCase("xlsx");
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String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + (isHtml ? "html" : "pdf");
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String outFilePath = FILE_DIR + pdfName;
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// 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
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if (!fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
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String filePath;
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ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, null);
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if (response.isFailure()) {
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return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
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String cacheFileName = userToken == null ? pdfName : userToken + "_" + pdfName;
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String outFilePath = FILE_DIR + cacheFileName;
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// 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
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ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileName);
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if (response.isFailure()) {
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return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
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}
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String filePath = response.getContent();
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/*
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* 1. 缓存判断-如果文件已经进行转换过,就直接返回,否则执行转换
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* 2. 缓存判断-加密文件基于userToken进行缓存,如果没有就不缓存
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*/
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boolean isCached = false;
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boolean isUseCached = false;
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boolean isPwdProtectedOffice = false;
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if (ConfigConstants.isCacheEnabled()) {
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// 全局开启缓存
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isUseCached = true;
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if (fileHandlerService.listConvertedFiles().containsKey(cacheFileName)) {
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// 存在缓存
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isCached = true;
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}
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filePath = response.getContent();
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if (StringUtils.hasText(outFilePath)) {
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officeToPdfService.openOfficeToPDF(filePath, outFilePath);
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if (isHtml) {
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// 对转换后的文件进行操作(改变编码方式)
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fileHandlerService.doActionConvertedFile(outFilePath);
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if (OfficeUtils.isPwdProtected(filePath)) {
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isPwdProtectedOffice = true;
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if (!StringUtils.hasLength(userToken)) {
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// 不缓存没有userToken的加密文件
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isUseCached = false;
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}
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if (ConfigConstants.isCacheEnabled()) {
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// 加入缓存
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fileHandlerService.addConvertedFile(pdfName, fileHandlerService.getRelativePath(outFilePath));
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}
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} else {
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isPwdProtectedOffice = OfficeUtils.isPwdProtected(filePath);
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}
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if (isCached == false) {
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// 没有缓存执行转换逻辑
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if (isPwdProtectedOffice && !StringUtils.hasLength(filePassword)) {
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// 加密文件需要密码
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model.addAttribute("needFilePassword", true);
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return EXEL_FILE_PREVIEW_PAGE;
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} else {
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if (StringUtils.hasText(outFilePath)) {
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try {
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officeToPdfService.openOfficeToPDF(filePath, outFilePath, fileAttribute);
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} catch (OfficeException e) {
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if (isPwdProtectedOffice && OfficeUtils.isCompatible(filePath, filePassword) == false) {
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// 加密文件密码错误,提示重新输入
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model.addAttribute("needFilePassword", true);
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model.addAttribute("filePasswordError", true);
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return EXEL_FILE_PREVIEW_PAGE;
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}
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return otherFilePreview.notSupportedFile(model, fileAttribute, "抱歉,该文件版本不兼容,文件版本错误。");
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}
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if (isHtml) {
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// 对转换后的文件进行操作(改变编码方式)
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fileHandlerService.doActionConvertedFile(outFilePath);
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}
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if (isUseCached) {
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// 加入缓存
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fileHandlerService.addConvertedFile(cacheFileName, fileHandlerService.getRelativePath(outFilePath));
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}
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}
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}
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}
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if (!isHtml && baseUrl != null && (OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType) || OFFICE_PREVIEW_TYPE_ALL_IMAGES.equals(officePreviewType))) {
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return getPreviewType(model, fileAttribute, officePreviewType, baseUrl, pdfName, outFilePath, fileHandlerService, OFFICE_PREVIEW_TYPE_IMAGE, otherFilePreview);
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return getPreviewType(model, fileAttribute, officePreviewType, baseUrl, cacheFileName, outFilePath, fileHandlerService, OFFICE_PREVIEW_TYPE_IMAGE, otherFilePreview);
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}
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model.addAttribute("pdfUrl", pdfName);
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model.addAttribute("pdfUrl", cacheFileName);
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return isHtml ? EXEL_FILE_PREVIEW_PAGE : PDF_FILE_PREVIEW_PAGE;
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}
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@ -88,4 +140,5 @@ public class OfficeFilePreviewImpl implements FilePreview {
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return PICTURE_FILE_PREVIEW_PAGE;
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}
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}
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}
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