/*
|
Copyright [2020] [https://www.xiaonuo.vip]
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
you may not use this file except in compliance with the License.
|
You may obtain a copy of the License at
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
Unless required by applicable law or agreed to in writing, software
|
distributed under the License is distributed on an "AS IS" BASIS,
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
See the License for the specific language governing permissions and
|
limitations under the License.
|
|
Snowy采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
|
|
1.请不要删除和修改根目录下的LICENSE文件。
|
2.请不要删除和修改Snowy源码头部的版权声明。
|
3.请保留源码和相关描述文件的项目出处，作者声明等。
|
4.分发源码时候，请注明软件出处 https://gitee.com/xiaonuobase/snowy
|
5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/xiaonuobase/snowy
|
6.若您的项目无法满足以上几点，可申请商业授权，获取Snowy商业授权许可，请在官网购买授权，地址为 https://www.xiaonuo.vip
|
*/
|
package vip.xiaonuo.core.util;
|
|
import cn.hutool.extra.spring.SpringUtil;
|
import cn.hutool.log.Log;
|
import org.jodconverter.DocumentConverter;
|
import org.jodconverter.document.DocumentFormat;
|
import org.jodconverter.office.OfficeException;
|
import org.springframework.http.MediaType;
|
import vip.xiaonuo.core.consts.MediaTypeConstant;
|
import vip.xiaonuo.core.enums.DocumentFormatEnum;
|
import vip.xiaonuo.core.exception.LibreOfficeException;
|
|
import java.io.IOException;
|
import java.io.InputStream;
|
import java.io.OutputStream;
|
|
/**
|
* LibreOffice工具类，用于将word,excel,ppt等格式文件转为pdf预览
|
*
|
* @author xuyuxiang
|
* @date 2020/7/6 14:55
|
*/
|
public class LibreOfficeUtil {
|
|
private static final Log log = Log.get();
|
|
private static DocumentConverter documentConverter;
|
|
private static void init() {
|
try {
|
documentConverter = SpringUtil.getBean(DocumentConverter.class);
|
} catch (Exception e) {
|
throw new LibreOfficeException();
|
}
|
}
|
|
/**
|
* 将文件流转换为PDF流
|
*
|
* @param inputStream：输入流
|
* @param outputStream：输入pdf流
|
* @param fileSuffix：源文件后缀
|
* @return 目标类型的contentType
|
* @author xuyuxiang
|
* @date 2020/7/6 15:02
|
*/
|
public static void convertToPdf(InputStream inputStream, OutputStream outputStream, String fileSuffix) {
|
if(!MediaTypeConstant.DOC_PDF.equals(fileSuffix)) {
|
init();
|
final DocumentFormatEnum documentFormatEnum = DocumentFormatEnum.valueOf(fileSuffix.toUpperCase());
|
final DocumentFormat format = documentFormatEnum.getFormFormat();
|
log.info(">>> 待转换的文档类型：{}", format);
|
final DocumentFormat targetFormat = documentFormatEnum.getTargetFormat();
|
log.info(">>> 转换的目标文档类型：{}", targetFormat);
|
try {
|
final InputStream is = documentFormatEnum.getInputStream(inputStream);
|
documentConverter.convert(is).as(format).to(outputStream).as(targetFormat).execute();
|
} catch (IOException | OfficeException e) {
|
e.printStackTrace();
|
}
|
log.info(">>> 文件转换结束");
|
}
|
}
|
|
/**
|
* 根据文件后缀判断是否图片
|
*
|
* @author xuyuxiang
|
* @date 2020/7/6 15:31
|
*/
|
public static boolean isPic(String fileSuffix) {
|
return MediaTypeConstant.IMG_JPG.equals(fileSuffix)
|
|| MediaTypeConstant.IMG_JPEG.equals(fileSuffix)
|
|| MediaTypeConstant.IMG_PNG.equals(fileSuffix)
|
|| MediaTypeConstant.IMG_GIF.equals(fileSuffix)
|
|| MediaTypeConstant.IMG_TIF.equals(fileSuffix)
|
|| MediaTypeConstant.IMG_BMP.equals(fileSuffix);
|
}
|
|
/**
|
* 根据文件后缀判断是否文档
|
*
|
* @author xuyuxiang
|
* @date 2020/7/6 15:31
|
*/
|
public static boolean isDoc(String fileSuffix) {
|
return MediaTypeConstant.DOC_TXT.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_DOC.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_DOCX.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_XLS.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_XLSX.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_PPT.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_PPTX.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_PDF.equals(fileSuffix);
|
}
|
|
/**
|
* 根据文件后缀获取转换目标类型
|
*
|
* @author xuyuxiang
|
* @date 2020/7/6 17:03
|
*/
|
public static String getTargetContentTypeBySuffix(String fileSuffix) {
|
//如果目标类型是pdf
|
if (MediaTypeConstant.DOC_TXT.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_DOC.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_DOCX.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_PPT.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_PPTX.equals(fileSuffix)
|
|| MediaTypeConstant.DOC_PDF.equals(fileSuffix)) {
|
return MediaType.APPLICATION_PDF_VALUE;
|
} else {
|
//否则是html类型
|
return MediaType.TEXT_HTML_VALUE;
|
}
|
}
|
}
|
