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PDF预览也支持图片模式和查看大图

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陈精华
2019-04-28 09:07:23 +08:00
committed by kl
parent 336a18ade7
commit 29726c11a3
2 changed files with 55 additions and 0 deletions
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1
jodconverter-web/src/main/java/cn/keking/service/impl/OfficeFilePreviewImpl.java
View File

@@ -60,6 +60,7 @@ public class OfficeFilePreviewImpl implements FilePreview {
if (!new File(filePath).exists()) {
ReturnResponse<String> response = downloadUtils.downLoad(decodedUrl, suffix, null);
if (0 != response.getCode()) {
model.addAttribute("fileType", suffix);
model.addAttribute("msg", response.getMsg());
return "fileNotSupported";
}

54
jodconverter-web/src/main/java/cn/keking/service/impl/PdfFilePreviewImpl.java
View File

@@ -1,9 +1,19 @@
package cn.keking.service.impl;
import cn.keking.config.ConfigConstants;
import cn.keking.model.FileAttribute;
import cn.keking.model.ReturnResponse;
import cn.keking.service.FilePreview;
import cn.keking.utils.DownloadUtils;
import cn.keking.utils.FileUtils;
import cn.keking.utils.PdfUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;
import java.io.File;
import java.util.List;
/**
* Created by kl on 2018/1/17.
* Content :处理pdf文件
@@ -11,9 +21,53 @@ import org.springframework.ui.Model;
@Service
public class PdfFilePreviewImpl implements FilePreview{
@Autowired
FileUtils fileUtils;
@Autowired
PdfUtils pdfUtils;
@Autowired
DownloadUtils downloadUtils;
String fileDir = ConfigConstants.getFileDir();
@Override
public String filePreviewHandle(String url, Model model) {
FileAttribute fileAttribute=fileUtils.getFileAttribute(url);
String decodedUrl=fileAttribute.getDecodedUrl();
String suffix=fileAttribute.getSuffix();
String fileName=fileAttribute.getName();
String officePreviewType = model.asMap().get("officePreviewType") == null ? "" : model.asMap().get("officePreviewType").toString();
model.addAttribute("pdfUrl", url);
String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";
String outFilePath = fileDir + pdfName;
if (OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType) || OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_ALLIMAGES.equals(officePreviewType)) {
//当文件不存在时，就去下载
if (!new File(outFilePath).exists()) {
ReturnResponse<String> response = downloadUtils.downLoad(decodedUrl, suffix, fileName);
if (0 != response.getCode()) {
model.addAttribute("fileType", suffix);
model.addAttribute("msg", response.getMsg());
return "fileNotSupported";
}
outFilePath = response.getContent();
}
List<String> imageUrls = pdfUtils.pdf2jpg(outFilePath, pdfName, url);
if (imageUrls == null || imageUrls.size() < 1) {
model.addAttribute("msg", "pdf转图片异常，请联系管理员");
model.addAttribute("fileType",fileAttribute.getSuffix());
return "fileNotSupported";
}
model.addAttribute("imgurls", imageUrls);
model.addAttribute("currentUrl", imageUrls.get(0));
if (OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType)) {
return "officePicture";
} else {
return "picture";
}
}
return "pdf";
}
}