springboot libreoffice 预览文件

迷南。 2023-10-04 17:52 47阅读 0赞

#### springboot+libreoffice在线预览文件 ####

*  安装libreoffice
 *  maven引用
 *  yml配置
 *  使用

## 安装libreoffice ##

安装教程我就不出了，下载地址[官网入口][Link 1] [旧版本下载入口][Link 2]

## maven引用 ##

以下是我用到的maven包，你们可以选择引用

<dependency>
                <groupId>org.jodconverter</groupId>
                <artifactId>jodconverter-core</artifactId>
                <version>4.2.0</version>
            </dependency>
            <dependency>
                <groupId>org.jodconverter</groupId>
                <artifactId>jodconverter-local</artifactId>
                <version>4.2.0</version>
            </dependency>
            <dependency>
                <groupId>org.jodconverter</groupId>
                <artifactId>jodconverter-spring-boot-starter</artifactId>
                <version>4.2.0</version>
            </dependency>
            <dependency>
                <groupId>org.libreoffice</groupId>
                <artifactId>ridl</artifactId>
                <version>5.4.2</version>
            </dependency>
            <dependency>
                <groupId>org.libreoffice</groupId>
                <artifactId>officebean</artifactId>
                <version>6.3.2</version>
            </dependency>

## yml配置 ##

windows环境

jodconverter:
      local:
        enabled: true
        # 设置LibreOffice主目录
        office-home: C:/Program Files/LibreOffice
        # 开启多个LibreOffice进程，每个端口对应一个进程
        portNumbers: 8889,8890
        # LibreOffice进程重启前的最大进程数
        maxTasksPerProcess: 100

linux环境

jodconverter:
      local:
        enabled: true
        # 设置LibreOffice主目录/
        office-home: /opt/libreoffice7.1
        # 开启多个LibreOffice进程，每个端口对应一个进程
        portNumbers: 8889,8890
        # LibreOffice进程重启前的最大进程数
        maxTasksPerProcess: 100

## 使用 ##

如果是视频和图片，做了其他处理，你们也可以选择不做处理

package com.sinux.sinuxproject.controller.file;
    
    
    import com.sinux.sinuxproject.entity.ExperimentFileInfo;
    import com.sinux.sinuxproject.service.ExperimentFileInfoService;
    import com.sinux.sinuxproject.service.UserFileService;
    import com.sinux.sinuxproject.util.Utils;
    import com.sinux.sinuxproject.util.common.HDFSUtil;
    import com.sinux.sinuxproject.util.common.HttpResult;
    import com.sinux.sinuxproject.util.common.ResultConsts;
    import com.sinux.sinuxproject.util.enums.FileEnum;
    import io.swagger.annotations.Api;
    import io.swagger.annotations.ApiOperation;
    import io.swagger.annotations.ApiParam;
    import org.apache.commons.compress.utils.IOUtils;
    import org.apache.commons.lang.StringUtils;
    import org.jodconverter.DocumentConverter;
    import org.jodconverter.document.DefaultDocumentFormatRegistry;
    import org.jodconverter.document.DocumentFormat;
    
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.multipart.MultipartFile;
    
    import javax.annotation.Resource;
    import javax.servlet.ServletOutputStream;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.validation.constraints.NotNull;
    import java.io.IOException;
    import java.io.InputStream;
    import java.net.URLEncoder;
    import java.nio.file.Files;
    import java.nio.file.Path;
    import java.nio.file.Paths;
    import java.util.Objects;
    @RestController
    @RequestMapping("/file")
    @Api(value = "文件", tags = {
        "文件接口"})
    public class FileController {
        
        @Resource
        private DocumentConverter documentConverter;
        @Resource
        private ExperimentFileInfoService experimentFileInfoService;
        @Resource
        private UserFileService userFileService;
        @PostMapping("/find-file-preview-second")
        @ApiOperation(value = "预览文件2")
        public HttpResult findFileDownLoadStream(@NotNull @ApiParam("文件") MultipartFile file, HttpServletResponse response, HttpServletRequest request) throws IOException {
        
            String path = file.getOriginalFilename();
            try (InputStream inputStream = file.getInputStream();
            ) {
        
                String fileTyle;
                if(path.lastIndexOf(".")<0){
        
                    fileTyle = ".txt";
                }else{
        
                    fileTyle = path.substring(path.lastIndexOf(".")).toLowerCase();//获取文件类型
                }
                fileTyle = fileTyle.toLowerCase();
                String extension = fileTyle.substring(fileTyle.indexOf(".")+1);
                if(documentConverter.getFormatRegistry().getFormatByExtension(extension)==null){
        
                    FileEnum fileEnum = FileEnum.getFileNameByType(extension);
                    if(Utils.getFileCanSupImage(fileEnum)){
        //判断是否是图片
                        response.setHeader("content-disposition", "inline" + ";fileName=" + URLEncoder.encode( path, "UTF-8"));
                        ServletOutputStream outputStream = response.getOutputStream();
                        IOUtils.copy(inputStream,outputStream);
                        IOUtils.closeQuietly(outputStream);
                    }else if(Utils.getFileCanSupStream(fileEnum)){
         //判断是否是视频
                        Path filePath = Paths.get(path);
                        String mimeType = Files.probeContentType(filePath);
                        if (!StringUtils.isEmpty(mimeType)) {
        
                            response.setContentType(mimeType);
                        }
                        ServletOutputStream outputStream = response.getOutputStream();
                        IOUtils.copy(inputStream,outputStream);
                        IOUtils.closeQuietly(outputStream);
                    }else{
        
                        return HttpResult.failure(ResultConsts.FILE_ANALYSIS_ERROR);
                    }
                }else{
        
                    DocumentFormat documentFormat= Objects.requireNonNull(documentConverter.getFormatRegistry().getFormatByExtension(extension));
                    ServletOutputStream outputStream = response.getOutputStream();
    
                    response.setHeader("content-disposition", "inline" + ";fileName=" + URLEncoder.encode(path.substring(0, path.lastIndexOf(".") + 1) + ".pdf", "UTF-8"));
                    documentConverter.convert(inputStream)
                            .as(documentFormat)
                            .to(outputStream)
                            .as(DefaultDocumentFormatRegistry.PDF)
                            .execute();
                    IOUtils.closeQuietly(outputStream);
                }
    
            } catch (Exception e) {
        
                e.printStackTrace();
                return HttpResult.failure(ResultConsts.FILE_ANALYSIS_ERROR);
            }
            return HttpResult.success();
    
        }
    
    
       
        @PostMapping("/find-file-down-load")
        @ApiOperation(value = "下载文件")
        public void findFileDownLoad(@NotNull @ApiParam("文件id") Integer fileId, HttpServletResponse response) throws IOException {
        
            if (!userFileService.findCanDownload(fileId)) {
        
                return;
            }
            ExperimentFileInfo fileInfo = experimentFileInfoService.findById(fileId);
            String openStyle = "attachment";
            //获取文件输入流
            InputStream is = HDFSUtil.getFileStream(fileInfo.getFileUrl());
            //附件下载
            response.setHeader("content-disposition", openStyle + ";fileName=" + URLEncoder.encode(fileInfo.getFileName(), "UTF-8"));
            //获取响应输出流
            ServletOutputStream os = response.getOutputStream();
            //文件拷贝
            IOUtils.copy(is, os);
            IOUtils.closeQuietly(is);
            IOUtils.closeQuietly(os);
        }
    }

[Link 1]: https://zh-cn.libreoffice.org/discover/new-features/
[Link 2]: https://www.fosshub.com/LibreOffice-old.html