Arbitrate-Backend/ruoyi-common/src/main/java/com/ruoyi/common/utils/LibreOfficeUtil.java

package com.ruoyi.common.utils;

import cn.hutool.extra.spring.SpringUtil;

import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.converter.OpenOfficeDocumentConverter;
import com.ruoyi.common.exception.ServiceException;
import lombok.extern.slf4j.Slf4j;
import org.jodconverter.document.DocumentFormat;
import org.jodconverter.office.OfficeException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;


import java.io.File;
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
 */
@Slf4j
public class LibreOfficeUtil {
    @Value("${jodconverter.local.office-home}")
    private long OpenOffice_HOME;

    private static DocumentConverter documentConverter;

    private static void init() {
        try {
            documentConverter = SpringUtil.getBean(DocumentConverter.class);
        } catch (Exception e) {
            throw new ServiceException();
        }
    }


    public static boolean doc2pdf(File docFile, File pdfFile) {
        boolean result = false;// 转换结果
        if (docFile.exists()) {
            if (!pdfFile.exists()) {
                OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
                try {
                    connection.connect();
                    DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
                    converter.convert(docFile, pdfFile);
                    // 关闭连接
                    connection.disconnect();
                    result = true;

                    log.info("****pdf转换成功，PDF输出：" + pdfFile.getPath() + "****");
                } catch (java.net.ConnectException e) {
                    log.error("openoffice服务未启动", e);
                } catch (com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException e) {
                    log.error("读取转换文件失败", e);
                } catch (Exception e) {
                    log.error("转换失败", e);
                }
            } else {
                result = true;
                log.info("****已经转换为pdf，不需要再进行转化****");
            }
        } else {
            log.info("****需要转换的文档不存在，无法转换****");
        }
        return result;
    }
    /**
     * doc转pdf（程序启动openoffice）
     *
     * @param inputFile 输入文件
     * @param outputFile 输出文件
     * @return
     */
    public static boolean doc2pdf2(File inputFile, File outputFile) {
        boolean result = false;
        // OpenOffice的安装目录
        String OpenOffice_HOME = "D:\\app\\libreOffice";
        if (OpenOffice_HOME.charAt(OpenOffice_HOME.length() - 1) != '/') {
            OpenOffice_HOME += "/";
        }
        Process process = null;
        try {
            // 启动OpenOffice的服务
            String command = OpenOffice_HOME
                    + "program/soffice.exe -headless -accept=\"socket,host=127.0.0.1,port=8100;urp;\"";
            process = Runtime.getRuntime().exec(command);
            // 连接 OpenOffice实例，运行在8100端口
            OpenOfficeConnection connection = new SocketOpenOfficeConnection("127.0.0.1", 8100);
            connection.connect();

            // 转换
            DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
            converter.convert(inputFile, outputFile);

            // 关闭连接
            connection.disconnect();
            // 销毁OpenOffice服务的进程
            process.destroy();

            log.info("****pdf转换成功，PDF输出：" + outputFile.getPath() + "****");
            return true;
        } catch (Exception e) {
            log.error("pdf转换失败", e);
        } finally {
            if (process != null) {
                process.destroy();
            }
        }
        return result;
    }

}