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57 lines
2.1 KiB
Java
57 lines
2.1 KiB
Java
package cn.keking.service.impl;
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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 org.springframework.stereotype.Service;
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import org.springframework.ui.Model;
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import org.springframework.util.CollectionUtils;
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import java.util.ArrayList;
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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 :图片文件处理
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*/
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@Service
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public class PictureFilePreviewImpl implements FilePreview {
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private final FileHandlerService fileHandlerService;
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private final OtherFilePreviewImpl otherFilePreview;
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public PictureFilePreviewImpl(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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List<String> imgUrls = new ArrayList<>();
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imgUrls.add(url);
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String fileKey = fileAttribute.getFileKey();
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List<String> zipImgUrls = fileHandlerService.getImgCache(fileKey);
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if (!CollectionUtils.isEmpty(zipImgUrls)) {
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imgUrls.addAll(zipImgUrls);
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}
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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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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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} else {
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String file = fileHandlerService.getRelativePath(response.getContent());
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imgUrls.clear();
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imgUrls.add(file);
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model.addAttribute("imgurls", imgUrls);
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model.addAttribute("currentUrl", file);
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}
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} else {
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model.addAttribute("imgurls", imgUrls);
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model.addAttribute("currentUrl", url);
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}
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return PICTURE_FILE_PREVIEW_PAGE;
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}
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}
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