mirror of
https://github.com/kekingcn/kkFileView.git
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5dc543db99
* 修复office下载方法中 错误 * 更新OFD解析效果,修复禁止trace请求无效问题,其他压缩包修复 * 修复压缩包 缓存BUG * 限制某些特殊文件上传 * 修复OFFICE文件密码检查关闭流 上传文件关闭流 检查PDF文件是否存在 * 特殊符号的支持 Co-authored-by: gaoxiongzaq <admin@cxcp.com>
87 lines
4.1 KiB
Java
87 lines
4.1 KiB
Java
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.web.filter.BaseUrlFilter;
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import org.springframework.stereotype.Service;
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import org.springframework.ui.Model;
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import java.net.URLEncoder;
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import java.util.List;
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/**
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* Created by kl on 2018/1/17.
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* Content :处理pdf文件
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*/
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@Service
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public class PdfFilePreviewImpl implements FilePreview {
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private final FileHandlerService fileHandlerService;
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private final OtherFilePreviewImpl otherFilePreview;
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private static final String FILE_DIR = ConfigConstants.getFileDir();
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public PdfFilePreviewImpl(FileHandlerService fileHandlerService, OtherFilePreviewImpl otherFilePreview) {
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this.fileHandlerService = fileHandlerService;
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this.otherFilePreview = otherFilePreview;
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}
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@Override
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public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
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String fileName = fileAttribute.getName();
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String officePreviewType = fileAttribute.getOfficePreviewType();
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String baseUrl = BaseUrlFilter.getBaseUrl();
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String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";
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String outFilePath = FILE_DIR + pdfName;
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if (OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType) || OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_ALL_IMAGES.equals(officePreviewType)) {
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//当文件不存在时，就去下载
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if (!fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
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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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outFilePath = response.getContent();
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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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}
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List<String> imageUrls = fileHandlerService.pdf2jpg(outFilePath, pdfName, baseUrl);
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if (imageUrls == null || imageUrls.size() < 1) {
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return otherFilePreview.notSupportedFile(model, fileAttribute, "pdf转图片异常，请联系管理员");
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}
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model.addAttribute("imgurls", imageUrls);
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model.addAttribute("currentUrl", imageUrls.get(0));
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if (OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType)) {
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return OFFICE_PICTURE_FILE_PREVIEW_PAGE;
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} else {
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return PICTURE_FILE_PREVIEW_PAGE;
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}
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} else {
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// 不是http开头，浏览器不能直接访问，需下载到本地
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if (url != null && !url.toLowerCase().startsWith("http")) {
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if (!fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
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ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, pdfName);
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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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model.addAttribute("pdfUrl", fileHandlerService.getRelativePath(response.getContent()));
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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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pdfName = URLEncoder.encode(pdfName).replaceAll("\\+", "%20");
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model.addAttribute("pdfUrl", pdfName);
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}
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} else {
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model.addAttribute("pdfUrl", url);
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}
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}
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return PDF_FILE_PREVIEW_PAGE;
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}
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}
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