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https://gitee.com/kekingcn/file-online-preview.git
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89 lines
4.2 KiB
Java
89 lines
4.2 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.FileHandlerService;
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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.utils.KkFileUtils;
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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 org.springframework.util.StringUtils;
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import static cn.keking.service.impl.OfficeFilePreviewImpl.getPreviewType;
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/**
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* @author chenjh
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* @since 2019/11/21 14:28
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*/
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@Service
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public class CadFilePreviewImpl implements FilePreview {
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private static final String OFFICE_PREVIEW_TYPE_IMAGE = "image";
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private static final String OFFICE_PREVIEW_TYPE_ALL_IMAGES = "allImages";
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private static final String FILE_DIR = ConfigConstants.getFileDir();
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private final FileHandlerService fileHandlerService;
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private final OtherFilePreviewImpl otherFilePreview;
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public CadFilePreviewImpl(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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// 预览Type，参数传了就取参数的，没传取系统默认
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String officePreviewType = fileAttribute.getOfficePreviewType() == null ? ConfigConstants.getOfficePreviewType() : fileAttribute.getOfficePreviewType();
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String baseUrl = BaseUrlFilter.getBaseUrl();
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boolean forceUpdatedCache=fileAttribute.forceUpdatedCache();
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String fileName = fileAttribute.getName();
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String suffix = fileAttribute.getSuffix();
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String cadPreviewType = ConfigConstants.getCadPreviewType();
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String pdfName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix +"." + cadPreviewType ; //生成文件添加类型后缀 防止同名文件
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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 (forceUpdatedCache || !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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}
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filePath = response.getContent();
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String imageUrls = null;
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if (StringUtils.hasText(outFilePath)) {
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try {
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imageUrls = fileHandlerService.cadToPdf(filePath, outFilePath,cadPreviewType);
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} catch (Exception e) {
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e.printStackTrace();
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}
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if (imageUrls == null ) {
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return otherFilePreview.notSupportedFile(model, fileAttribute, "office转图片异常，请联系管理员");
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}
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//是否保留CAD源文件
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if( ConfigConstants.getDeleteSourceFile()) {
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KkFileUtils.deleteFileByPath(filePath);
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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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}
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}
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if("tif".equalsIgnoreCase(cadPreviewType)){
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model.addAttribute("currentUrl", pdfName);
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return TIFF_FILE_PREVIEW_PAGE;
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}else if("svg".equalsIgnoreCase(cadPreviewType)){
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model.addAttribute("currentUrl", pdfName);
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return SVG_FILE_PREVIEW_PAGE;
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}
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if (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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}
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model.addAttribute("pdfUrl", pdfName);
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return PDF_FILE_PREVIEW_PAGE;
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}
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}
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