forked from kk-open/kkFileView
102 lines
4.7 KiB
Java
102 lines
4.7 KiB
Java
package cn.keking.service.impl;
|
||
|
||
import cn.keking.config.ConfigConstants;
|
||
import cn.keking.model.FileAttribute;
|
||
import cn.keking.model.ReturnResponse;
|
||
import cn.keking.service.FileHandlerService;
|
||
import cn.keking.service.FilePreview;
|
||
import cn.keking.utils.ConvertPicUtil;
|
||
import cn.keking.utils.DownloadUtils;
|
||
import cn.keking.web.filter.BaseUrlFilter;
|
||
import org.springframework.stereotype.Service;
|
||
import org.springframework.ui.Model;
|
||
import org.springframework.util.StringUtils;
|
||
|
||
import java.io.File;
|
||
import java.util.ArrayList;
|
||
import java.util.List;
|
||
|
||
/**
|
||
* tiff 图片文件处理
|
||
*
|
||
* @author kl (http://kailing.pub)
|
||
* @since 2021/2/8
|
||
*/
|
||
@Service
|
||
public class TiffFilePreviewImpl implements FilePreview {
|
||
|
||
private final FileHandlerService fileHandlerService;
|
||
private final OtherFilePreviewImpl otherFilePreview;
|
||
public TiffFilePreviewImpl(FileHandlerService fileHandlerService,OtherFilePreviewImpl otherFilePreview) {
|
||
this.fileHandlerService = fileHandlerService;
|
||
this.otherFilePreview = otherFilePreview;
|
||
}
|
||
private final String fileDir = ConfigConstants.getFileDir();
|
||
@Override
|
||
public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
|
||
String fileName = fileAttribute.getName();
|
||
String baseUrl = BaseUrlFilter.getBaseUrl();
|
||
String tifPreviewType = ConfigConstants.getTifPreviewType();
|
||
String tifOnLinePreviewType = fileAttribute.getTifPreviewType();
|
||
if (StringUtils.hasText(tifOnLinePreviewType)) {
|
||
tifPreviewType = tifOnLinePreviewType;
|
||
}
|
||
if ("tif".equalsIgnoreCase(tifPreviewType)) {
|
||
model.addAttribute("currentUrl", url);
|
||
return TIFF_FILE_PREVIEW_PAGE;
|
||
} else if ("jpg".equalsIgnoreCase(tifPreviewType) || "pdf".equalsIgnoreCase(tifPreviewType)) {
|
||
String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";
|
||
String jpgName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "jpg";
|
||
String strLocalTif = fileDir + fileName;
|
||
String outFilePath = fileDir + pdfName;
|
||
if ("pdf".equalsIgnoreCase(tifPreviewType)) {
|
||
//当文件不存在时，就去下载
|
||
if (!fileHandlerService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
|
||
ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileName);
|
||
if (response.isFailure()) {
|
||
return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
|
||
}
|
||
String filePath = response.getContent();
|
||
if (ConfigConstants.isCacheEnabled()) {
|
||
// 加入缓存
|
||
fileHandlerService.addConvertedFile(pdfName, fileHandlerService.getRelativePath(outFilePath));
|
||
}
|
||
if(ConvertPicUtil.convertJpg2Pdf(filePath, outFilePath)){
|
||
model.addAttribute("pdfUrl", pdfName);
|
||
return PDF_FILE_PREVIEW_PAGE;
|
||
}
|
||
}
|
||
else {
|
||
model.addAttribute("pdfUrl", pdfName);
|
||
return PDF_FILE_PREVIEW_PAGE;
|
||
}
|
||
|
||
} else {
|
||
File fileTiff = new File(strLocalTif);
|
||
// 如果本地不存在这个tif文件，则下载
|
||
if (!fileTiff.exists()) {
|
||
ReturnResponse<String> response = DownloadUtils.downLoad(fileAttribute, fileName);
|
||
if (response.isFailure()) {
|
||
return otherFilePreview.notSupportedFile(model, fileAttribute, response.getMsg());
|
||
}
|
||
strLocalTif = response.getContent();
|
||
}
|
||
// 以JPG模式预览的过程
|
||
String strJpgFilePathName = fileDir + jpgName;
|
||
// 将tif转换为jpg，返回转换后的文件路径、文件名的list
|
||
List<String> listPic2Jpg = ConvertPicUtil.convertTif2Jpg(strLocalTif, strJpgFilePathName);
|
||
// 将返回页面的图片url的list对象
|
||
List<String> listImageUrls = new ArrayList<>();
|
||
// 循环，拼装url的list对象
|
||
for (String strJpg : listPic2Jpg) {
|
||
listImageUrls.add(baseUrl + strJpg);
|
||
}
|
||
model.addAttribute("imgUrls", listImageUrls);
|
||
model.addAttribute("currentUrl", listImageUrls.get(0));
|
||
}
|
||
return PICTURE_FILE_PREVIEW_PAGE;
|
||
}
|
||
return NOT_SUPPORTED_FILE_PAGE;
|
||
}
|
||
}
|