Java에서 Apache OpenOffice + JODConverter 를 활용한 PDF Converter 개발

Java에서 Apache OpenOffice + JODConverter 를 활용한 PDF Converter 개발

Apache OpenOffice란 다양한 운영체제에서 사용하 수 있는 오피스 제품이다.(오픈소스) -> 현재는 버전업 속도가 빠른 리브레오피스(LibreOffice)를 추천 현재 라이브러리는 RedHat Linux 기준으로 작성되었다.

OpenOffice v4.0.0 기준으로 작성되었다. (그 이상 버전에서는 jre 관련 에러가 표시되어 다운그레이드함)

• build.gradle에 의존성 추가

      dependencies {
        ...
  
        // Windows
        compile group: 'org.jodconverter', name: 'jodconverter-core', version: '4.0.0-RELEASE'
  
        // Linux
        compile group: 'com.artofsolving', name: 'jodconverter', version: '2.2.0'
      }
  

• OpenOffice 설치(v4.0.0)
  • Windows

      // .exe 파일 설치하면 완료
    

  • Linux
    • 다운 후 압축해제

        $ wget https://sourceforge.net/projects/openofficeorg.mirror/files/4.0.0/binaries/ko/Apache_OpenOffice_4.0.0_Linux_x86-64_install-rpm_ko.tar.gz/download -O Apache_OpenOffice_4.0.0_Linux_x86-64_install-rpm_ko.tar.gz
        $ sudo yum remove openoffice* libreoffice*
        $ tar -xvf Apache_OpenOffice_4.0.0*
        $ cd ko
      

    • sudo vi /etc/yum.conf [yum.conf]

        [yum.conf]
        ## Add exclude row
        [main]
        exclude=openoffice.org-ure* libreoffice-ure*
      

    • 설치

        $ sudo rpm -Uvh RPMS/*.rpm RPMS/desktop-integration/openoffice4.0-redhat-*.rpm
        $ soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;tcpNoDelay=1" -nofirststartwizard --convert-to &
      

    • Java 코드 작성

        import lombok.extern.slf4j.Slf4j;
        import org.jodconverter.OfficeDocumentConverter;
        import org.jodconverter.office.DefaultOfficeManagerBuilder;
        import org.jodconverter.office.OfficeException;
        import org.jodconverter.office.OfficeManager;
      
        import java.io.File;
        import java.io.FileInputStream;
        import java.io.IOException;
      
        @Slf4j
        public class FileToPdfConverter {
      
            private FileToPdfConverter() {
                throw new IllegalStateException("Utility class");
            }
      
            public static boolean setFileToPdfParse(String origFilePath, String parseFilePath) throws OfficeException, IOException {
                boolean result = true;
      
                if (origFilePath.isEmpty() || parseFilePath.isEmpty()) {
                    log.info(">>>>>>>>>>>>>>>>>>>>>>>>> setFileToPdfParse Parameter Empty ERROR !!");
                    result = false;
                }
      
                log.info(">>>>>>>>>>>>>>>>>>>>>>>>> encoding: " + System.getProperty("file.encoding"));
                log.info(">>>>>>>>>>>>>>>>>>>>>>>>> origFilePath: " + getFileEncoding(origFilePath));
      
                File origFile = new File(origFilePath);
                File parseFile = new File(parseFilePath);
      
                DefaultOfficeManagerBuilder builder = new DefaultOfficeManagerBuilder();
                builder.setPortNumber(8100);
                builder.setOfficeHome(new File("/opt/openoffice4"));
                builder.setTaskExecutionTimeout(600000L);   // 10 minutes
                builder.setMaxTasksPerProcess(2);
                OfficeManager officeManager = builder.build();
      
                try {
                    log.info(">>>>>>>>>>>>>>>>>>>>>>>>> [PDF Parser Util] Start !!");
                    officeManager.start();
                    OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager);
                    converter.convert(origFile, parseFile);
                    log.info(">>>>>>>>>>>>>>>>>>>>>>>>> [PDF Parser Util] End !!");
                } catch (Exception e) {
                    if (log.isErrorEnabled()) {
                        log.error(">>>>>>>>>>>>>>>>>>>>>>>>> setFileToPdfParse ERROR !! {}", e.getMessage());
                    }
                } finally {
                    officeManager.stop();
                    origFile.delete();
                }
      
                return result;
            }
      
            // Windows Test
            public static void main(String[] args) throws Exception {
                OfficeManager officeManager = new DefaultOfficeManagerBuilder().build();
      
                String origPath = "./fasoo_drm/contents/cal.xls";
                String newPath = "./fasoo_drm/contents/okok.pdf";
                File origFile = new File(origPath);
                File newFile = new File(newPath);
      
                try {
                    log.info(">>>>>>>>>>>>>>>>>>>>>>>>> encoding: " + System.getProperty("file.encoding"));
                    log.info(">>>>>>>>>>>>>>>>>>>>>>>>> origFilePath: " + getFileEncoding(origPath));
      
                    officeManager.start();
                    OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager);
                    converter.convert(origFile, newFile);
      
                    officeManager.stop();
                    origFile.delete();
                    log.info(">>>>>>>>>>>>>>>>>>>>>>>>> origFile Delete !!");
                } catch (Exception e) {
                    if (log.isErrorEnabled()) {
                        log.error(">>>>>>>>>>>>>>>>>>>>>>>>> FileToPdfParser ERROR !! {}", e.getMessage());
                    }
                }
            }
      
            // encoding return
            private static String getFileEncoding(String filePath) {
                String fileEncodingStr = "EUC-KR";
      
                try {
                    FileInputStream fis = new FileInputStream(filePath);
                    byte[] BOM = new byte[4];
                    fis.read(BOM, 0, 4);
      
                    if ((BOM[0] & 0xFF) == 0xEF && (BOM[1] & 0xFF) == 0xBB && (BOM[2] & 0xFF) == 0xBF) {
                        fileEncodingStr = "UTF-8";
                    } else if ((BOM[0] & 0xFF) == 0xFE && (BOM[1] & 0xFF) == 0xFF) {
                        fileEncodingStr = "UTF-16BE";
                    } else if ((BOM[0] & 0xFF) == 0xFF && (BOM[1] & 0xFF) == 0xFE) {
                        fileEncodingStr = "UTF-16LE";
                    } else if (
                        (BOM[0] & 0xFF) == 0x00 && (BOM[1] & 0xFF) == 0x00
                        && (BOM[0] & 0xFF) == 0xFE && (BOM[1] & 0xFF) == 0xFF
                    ) {
                        fileEncodingStr = "UTF-32BE";
                    } else if (
                        (BOM[0] & 0xFF) == 0xFF && (BOM[1] & 0xFF) == 0xFE
                        && (BOM[0] & 0xFF) == 0x00 && (BOM[1] & 0xFF) == 0x00
                    ) {
                        fileEncodingStr = "UTF-32LE";
                    }
                } catch (Exception e) {
                    if (log.isErrorEnabled()) {
                        log.error("fileEncodingChk ERROR !! {}", e.getMessage());
                    }
                }
      
                return fileEncodingStr;
            }
      
        }
      

    • 문제해결
      • 만약 한글이 ??로 깨져서 표시될 때 Font issue일 가능성이 농후
        • http://cdn.naver.com/naver/NanumFont/fontfiles/NanumFont_TTF_ALL.zip 에서 폰트 다운
        • openoffice 설치 경로인 /opt/openoffice4/share/fonts/truetype 에 .ttf 폰트파일 이동
        • sudo fc-cache -r 폰트적용
      • Font가 적용되었음에도 한글이 ??로 깨져서 표시될 때
        • soffice 프로세스가 죽어있는 경우 한글이 깨질 수 있음 -> 다시 실행