openOffice word转pdf,pdf转图片优化版

绝地灬酷狼 2021-12-19 14:49 684阅读 0赞

之前写了一个版本的，不过代码繁琐而且不好用，效率有些问题。尤其pdf转图片速度太慢。下面是优化版本的代码。

spriing\_boot 版本信息：2.0.1.RELEASE

**1、配置信息：**

package com.yunfatong.conf;
    
    import lombok.extern.slf4j.Slf4j;
    import org.apache.commons.lang3.ArrayUtils;
    import org.apache.commons.lang3.StringUtils;
    import org.apache.commons.lang3.math.NumberUtils;
    import org.jodconverter.DocumentConverter;
    import org.jodconverter.LocalConverter;
    import org.jodconverter.office.LocalOfficeManager;
    import org.jodconverter.office.OfficeManager;
    import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
    import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
    import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
    import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
    import org.springframework.boot.context.properties.EnableConfigurationProperties;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import java.util.HashSet;
    import java.util.Set;
    
    /**
     * openoffice 配置
     *
     * @author liran
     * @date 20190517
     */
    @Configuration
    @ConditionalOnClass({DocumentConverter.class})
    @ConditionalOnProperty(prefix = "jodconverter", name = {"enabled"}, havingValue = "true", matchIfMissing = true)
    @EnableConfigurationProperties({JodConverterProperties.class})
    @Slf4j
    public class JodConverterAutoConfiguration {
        private final JodConverterProperties properties;
    
        public JodConverterAutoConfiguration(JodConverterProperties properties) {
            this.properties = properties;
        }
    
        private OfficeManager createOfficeManager() {
            LocalOfficeManager.Builder builder = LocalOfficeManager.builder();
            if (!StringUtils.isBlank(this.properties.getPortNumbers())) {
                Set<Integer> iports = new HashSet<>();
                String[] var3 = StringUtils.split(this.properties.getPortNumbers(), ", ");
                int var4 = var3.length;
    
                for (int var5 = 0; var5 < var4; ++var5) {
                    String portNumber = var3[var5];
                    iports.add(NumberUtils.toInt(portNumber, 2002));
                }
    
                builder.portNumbers(ArrayUtils.toPrimitive(iports.toArray(new Integer[iports.size()])));
            }
            builder.officeHome(this.properties.getOfficeHome());
            builder.workingDir(this.properties.getWorkingDir());
            builder.templateProfileDir(this.properties.getTemplateProfileDir());
            builder.killExistingProcess(this.properties.isKillExistingProcess());
            builder.processTimeout(this.properties.getProcessTimeout());
            builder.processRetryInterval(this.properties.getProcessRetryInterval());
            builder.taskExecutionTimeout(this.properties.getTaskExecutionTimeout());
            builder.maxTasksPerProcess(this.properties.getMaxTasksPerProcess());
            builder.taskQueueTimeout(this.properties.getTaskQueueTimeout());
            return builder.build();
        }
    
        @Bean(initMethod = "start", destroyMethod = "stop")
        @ConditionalOnMissingBean
        public OfficeManager officeManager() {
            return this.createOfficeManager();
        }
    
        @Bean
        @ConditionalOnMissingBean
        @ConditionalOnBean({OfficeManager.class})
        public DocumentConverter jodConverter(OfficeManager officeManager) {
            return LocalConverter.make(officeManager);
        }
    }

package com.yunfatong.conf;
    
    import org.springframework.boot.context.properties.ConfigurationProperties;
    
    import java.util.regex.Pattern;
    
    /**
     * openoffice 配置
     *
     * @author liran
     * @date 20190517
     */
    @ConfigurationProperties("jodconverter")
    public class JodConverterProperties {
        private boolean enabled;
        private String officeHome;
        private String portNumbers = "2002";
        private String workingDir;
        private String templateProfileDir;
        private boolean killExistingProcess = true;
        private long processTimeout = 120000L;
        private long processRetryInterval = 250L;
        private long taskExecutionTimeout = 120000L;
        private int maxTasksPerProcess = 200;
        private long taskQueueTimeout = 30000L;
    
        public JodConverterProperties() {
        }
    
        public boolean isEnabled() {
            return this.enabled;
        }
    
        public void setEnabled(boolean enabled) {
            this.enabled = enabled;
        }
    
        public String getOfficeHome() {
            //根据不同系统分别设置
            //office-home: C:\Program Files (x86)\OpenOffice 4  #windows下默认 不用修改
            // #office-home: /opt/openoffice4      #linux 默认 不用修改
            String osName = System.getProperty("os.name");
            if (Pattern.matches("Linux.*", osName)) {
                this.officeHome = "/opt/openoffice4";
            } else if (Pattern.matches("Windows.*", osName)) {
                this.officeHome = "C:\\Program Files (x86)\\OpenOffice 4";
            } else {
                this.officeHome = "/opt/openoffice4";
            }
            return this.officeHome;
        }
    
        public void setOfficeHome(String officeHome) {
            this.officeHome = officeHome;
        }
    
        public String getPortNumbers() {
            return this.portNumbers;
        }
    
        public void setPortNumbers(String portNumbers) {
            this.portNumbers = portNumbers;
        }
    
        public String getWorkingDir() {
            return this.workingDir;
        }
    
        public void setWorkingDir(String workingDir) {
            this.workingDir = workingDir;
        }
    
        public String getTemplateProfileDir() {
            return this.templateProfileDir;
        }
    
        public void setTemplateProfileDir(String templateProfileDir) {
            this.templateProfileDir = templateProfileDir;
        }
    
        public boolean isKillExistingProcess() {
            return this.killExistingProcess;
        }
    
        public void setKillExistingProcess(boolean killExistingProcess) {
            this.killExistingProcess = killExistingProcess;
        }
    
        public long getProcessTimeout() {
            return this.processTimeout;
        }
    
        public void setProcessTimeout(long processTimeout) {
            this.processTimeout = processTimeout;
        }
    
        public long getProcessRetryInterval() {
            return this.processRetryInterval;
        }
    
        public void setProcessRetryInterval(long procesRetryInterval) {
            this.processRetryInterval = procesRetryInterval;
        }
    
        public long getTaskExecutionTimeout() {
            return this.taskExecutionTimeout;
        }
    
        public void setTaskExecutionTimeout(long taskExecutionTimeout) {
            this.taskExecutionTimeout = taskExecutionTimeout;
        }
    
        public int getMaxTasksPerProcess() {
            return this.maxTasksPerProcess;
        }
    
        public void setMaxTasksPerProcess(int maxTasksPerProcess) {
            this.maxTasksPerProcess = maxTasksPerProcess;
        }
    
        public long getTaskQueueTimeout() {
            return this.taskQueueTimeout;
        }
    
        public void setTaskQueueTimeout(long taskQueueTimeout) {
            this.taskQueueTimeout = taskQueueTimeout;
        }
    }

application.yml

jodconverter:
      enabled: true
      office-home: linuxOrwindows
      #/opt/openoffice4      #linux 默认 不用修改 C:\Program Files (x86)\OpenOffice 4  #windows下默认 不用修改
      port-numbers: 2002
      max-tasks-per-process: 10

**2、转换入口**

package com.yunfatong.ojd.util.pdf;
    
    import cn.hutool.core.date.DatePattern;
    import com.yunfatong.ojd.common.exception.CommonException;
    import com.yunfatong.ojd.service.FileSystemStorageService;
    import com.yunfatong.ojd.util.SpringUtil;
    import lombok.extern.slf4j.Slf4j;
    import org.apache.commons.io.FileUtils;
    import org.apache.commons.lang.StringUtils;
    import org.jodconverter.DocumentConverter;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    
    import java.io.File;
    import java.time.LocalDateTime;
    import java.time.format.DateTimeFormatter;
    import java.util.ArrayList;
    import java.util.List;
    
    /**
     * word 转pdf
     *
     * @author lr
     */
    @Component
    @Slf4j
    public class TransferUtil {
        
        //这里没有@Autowired 主要是配置不启用的话 无法注入
        private DocumentConverter documentConverter;
        @Autowired
        private FileSystemStorageService fileSystemStorageService;
        /**
         * fileSystemStorageService 就是拼接出本地路径的作用
         * storage.winLocation=D:\\ojd\\upload\\images\\
         * ##上传图片linux存储路径
         * storage.linuxLocation=/home/ojd/upload/images/
         */
    
        final static String WORD_SUFFIX_DOC = "doc";
        final static String WORD_SUFFIX_DOCX = "docx";
    
        /**
         * word ->pdf
         *
         * @param webPath 浏览器可访问路径（数据库存的）如 /test/wd.word
         * @return 相同文件夹下的转换后的pdf 路径 如/test/wd_20190517151515333.pdf
         * @throws Exception
         */
        public String transferWordToPdf(String webPath) throws Exception {
        
            if(documentConverter==null){
        
                documentConverter = SpringUtil.getBean(DocumentConverter.class);
            }
            //转换成本地实际磁盘路径
            String originLocalFilePath = fileSystemStorageService.getLocation(webPath);
            File inputFile = new File(originLocalFilePath);
            if (!inputFile.exists() || 
    　　　　　　　　!inputFile.isFile() ||
    　　　　　　　　 (!StringUtils.contains(inputFile.getName(), WORD_SUFFIX_DOC) && 
    　　　　　　　　　　!StringUtils.contains(inputFile.getName(), WORD_SUFFIX_DOCX))) {
        
                throw new CommonException("word -> pdf转换错误  当前文件不是word或 文件不存在: " + webPath);
            }
    
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DatePattern.PURE_DATETIME_MS_PATTERN);
            String timeNow = formatter.format(LocalDateTime.now());
            String newPdfWebPath = StringUtils.substringBeforeLast(webPath, ".") + "_" + timeNow + ".pdf";
            try {
        
                File outputFile = new File(fileSystemStorageService.getLocation(newPdfWebPath));
                documentConverter.convert(inputFile).to(outputFile).execute();
            } catch (Exception e) {
        
                log.error("word->pdf 转换错误------------> Exception:{}", e);
                throw e;
            }
            return newPdfWebPath;
        }
    
        public List<String> transferPdfToImage(String webPath) throws Exception {
        
            String originLocalFilePath = fileSystemStorageService.getLocation(webPath);
            File inputFile = new File(originLocalFilePath);
            if (!inputFile.exists() || 
    　　　　　　　　!inputFile.isFile() || 
    　　　　　　　　webPath.lastIndexOf(".pdf") < 0) {
        
           throw new CommonException("pdf-> img 源文件不是pdf文件 或者文件不存在！" + webPath);
            }
            String localPdfpath = fileSystemStorageService.getLocation(webPath);
            String newImgWebPathPreSuffix = StringUtils.substringBeforeLast(webPath, ".");
            String localImgPath = fileSystemStorageService.getLocation(newImgWebPathPreSuffix);
            PdfTransferUtil pdfTranfer = new PdfTransferUtil();
            List<byte[]> ins = pdfTranfer.pdf2Image(localPdfpath, "png", 1.5f);
            List<String> webPaths = new ArrayList<>(ins.size());
            for (int i = 0; i < ins.size(); i++) {
        
                byte[] data = ins.get(i);
                String pathReal = localImgPath + "_ojd_" + i + ".png";
                FileUtils.writeByteArrayToFile(new File(pathReal), data);
                webPaths.add(pathReal);
            }
            return webPaths;
        }
    
    }

pdf 转图片参考*** https://gitee.com/cycmy/pdftranfer.git***

package com.yunfatong.ojd.util.pdf;
    
    import lombok.extern.slf4j.Slf4j;
    import org.icepdf.core.pobjects.Document;
    import org.icepdf.core.pobjects.Page;
    import org.icepdf.core.util.GraphicsRenderingHints;
    
    import javax.imageio.ImageIO;
    import javax.imageio.stream.ImageOutputStream;
    import java.awt.image.BufferedImage;
    import java.io.ByteArrayOutputStream;
    import java.io.InputStream;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.concurrent.Callable;
    import java.util.concurrent.ExecutorService;
    import java.util.concurrent.Executors;
    import java.util.concurrent.Future;
    
    /**
     * @author lr
     *  
     */
    @Slf4j
    public class PdfTransferUtil {
    
        //*********************************pdf to image **********************************************************
    
        /**
         * 将指定pdf字节数组转换为指定格式图片二进制数组
         *
         * @param pdfBytes  PDF字节数组
         * @param imageType 转换图片格式  默认png
         * @param zoom      缩略图显示倍数，1表示不缩放，0.3则缩小到30%
         * @return List<byte [ ]>
         * @throws Exception
         */
        public List<byte[]> pdf2Image(byte[] pdfBytes, String imageType, float zoom) throws Exception {
            Document document = new Document();
            document.setByteArray(pdfBytes, 0, pdfBytes.length, null);
            return pageExtraction(document, imageType, 0f, zoom);
        }
    
        /**
         * 将指定pdf输入流转换为指定格式图片二进制数组
         *
         * @param inputPDF  PDF二进制流
         * @param imageType 转换图片格式 默认png
         * @param zoom      缩略图显示倍数，1表示不缩放，0.3则缩小到30%
         * @return List<byte [ ]>
         * @throws Exception
         */
        public List<byte[]> pdf2Image(InputStream inputPDF, String imageType, float zoom) throws Exception {
    
            Document document = new Document();
            document.setInputStream(inputPDF, null);
            return pageExtraction(document, imageType, 0f, zoom);
        }
    
        /**
         * 将指定pdf文件转换为指定格式图片二进制数组
         *
         * @param pdfPath   原文件路径，例如d:/test.pdf
         * @param imageType 转换图片格式 默认png
         * @param zoom      缩略图显示倍数，1表示不缩放，0.3则缩小到30%
         * @return List<byte [ ]>
         * @throws Exception
         */
        public List<byte[]> pdf2Image(String pdfPath, String imageType, float zoom) throws Exception {
            Document document = new Document();
            document.setFile(pdfPath);
            return pageExtraction(document, imageType, 0f, zoom);
        }
        //*********************************pdf to image **********************************************************
    
        private List<byte[]> pageExtraction(Document document, String imageType, float rotation, float zoom) {
            // setup two threads to handle image extraction.
            ExecutorService executorService = Executors.newFixedThreadPool(5);
            try {
                // create a list of callables.
                int pages = document.getNumberOfPages();
                List<byte[]> result = new ArrayList<byte[]>(pages);
                List<Callable<byte[]>> callables = new ArrayList<Callable<byte[]>>(pages);
                for (int i = 0; i < pages; i++) {
                    callables.add(new CapturePage(document, i, imageType, rotation, zoom));
                }
                List<Future<byte[]>> listFuture = executorService.invokeAll(callables);
                executorService.submit(new DocumentCloser(document)).get();
                for (Future<byte[]> future : listFuture) {
                    result.add(future.get());
                }
                return result;
            } catch (Exception ex) {
                log.error(" pdf 转换图片错误  Error handling PDF document " + ex);
            } finally {
                executorService.shutdown();
            }
            return null;
        }
    
        public class CapturePage implements Callable<byte[]> {
            private Document document;
            private int pageNumber;
            private String imageType;
            private float rotation;
            private float zoom;
    
            private CapturePage(Document document, int pageNumber, String imageType, float rotation, float zoom) {
                this.document = document;
                this.pageNumber = pageNumber;
                this.imageType = imageType;
                this.rotation = rotation;
                this.zoom = zoom;
            }
    
            @Override
            public byte[] call() throws Exception {
                BufferedImage image = (BufferedImage) document.getPageImage(pageNumber, GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX, rotation, zoom);
                ByteArrayOutputStream bs = new ByteArrayOutputStream();
                ImageOutputStream imOut = ImageIO.createImageOutputStream(bs);
                ImageIO.write(image, imageType, imOut);
                image.flush();
                return bs.toByteArray();
            }
        }
    
        /**
         * Disposes the document.
         */
        public class DocumentCloser implements Callable<Void> {
            private Document document;
    
            private DocumentCloser(Document document) {
                this.document = document;
            }
    
            @Override
            public Void call() {
                if (document != null) {
                    document.dispose();
                    log.info("Document disposed");
                }
                return null;
            }
        }
    
    }

springutils

package com.yunfatong.ojd.util;
    
    /**
     * @Auther liran
     * @Date 2018/8/30 14:49
     * @Description
     */
    import org.springframework.beans.BeansException;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    import org.springframework.stereotype.Component;
    
    @Component
    public class SpringUtil implements ApplicationContextAware {
    
        private static ApplicationContext applicationContext;
    
        @Override
        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
            if(SpringUtil.applicationContext == null) {
                SpringUtil.applicationContext = applicationContext;
            }
            System.out.println("========ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="+SpringUtil.applicationContext+"========");
    
        }
    
        //获取applicationContext
        public static ApplicationContext getApplicationContext() {
            return applicationContext;
        }
    
        //通过name获取 Bean.
        public static Object getBean(String name){
            return getApplicationContext().getBean(name);
        }
    
        //通过class获取Bean.
        public static <T> T getBean(Class<T> clazz){
            return getApplicationContext().getBean(clazz);
        }
    
        //通过name,以及Clazz返回指定的Bean
        public static <T> T getBean(String name,Class<T> clazz){
            return getApplicationContext().getBean(name, clazz);
        }
    
    }

pom.xml

<dependency>
                <groupId>org.jodconverter</groupId>
                <artifactId>jodconverter-core</artifactId>
                <version>4.2.2</version>
            </dependency>
    
            <dependency>
                <groupId>org.jodconverter</groupId>
                <artifactId>jodconverter-local</artifactId>
                <version>4.2.2</version>
            </dependency>
            <dependency>
                <groupId>org.jodconverter</groupId>
                <artifactId>jodconverter-spring-boot-starter</artifactId>
                <version>4.2.2</version>
            </dependency>
            
    
            
            <dependency>
                <groupId>org.icepdf.os</groupId>
                <artifactId>icepdf-core</artifactId>
                <version>6.2.2</version>
                <exclusions>
                    <exclusion>
                        <groupId>javax.media</groupId>
                        <artifactId>jai_core</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.icepdf.os</groupId>
                <artifactId>icepdf-viewer</artifactId>
                <version>6.2.2</version>
            </dependency>

3、调用测试：

import com.yunfatong.ojd.service.FileSystemStorageService;
    import lombok.extern.slf4j.Slf4j;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    
    import java.util.List;
    
    @RunWith(SpringRunner.class)
    @SpringBootTest
    @Slf4j
    public class WordTransferPdfUtilTest {
        @Autowired
        TransferUtil wordTransferPdfUtil;
        @Autowired
        FileSystemStorageService fileSystemStorageService;
    
    
        @Test
        public void transferLocalFile() {

try {
        
                /*******************word 转pdf******************/
                long time = System.currentTimeMillis();
                System.out.println("start :======" + time);
                 wordTransferPdfUtil.transferWordToPdf("courtChongqing/test_new/555.docx");
                log.error(System.currentTimeMillis() + " time============================== :" + ((System.currentTimeMillis() - time) / 1000));
    
                /*******************pdf转图片******************/
                long time2 = System.currentTimeMillis();
                List<String> pdfImages2 = wordTransferPdfUtil.transferPdfToImage("courtChongqing/test_new/333.pdf");
                for (String pdfImage : pdfImages2) {
        
                    log.error(pdfImage);
                }
                log.error(" time===============================22222222 :" + ((System.currentTimeMillis() - time2) / 1000));
    //            System.out.println("pdf path =============" + path);
            } catch (Exception e) {
        
                e.printStackTrace();
            }

} }

转载于:https://www.cnblogs.com/liran123/p/10883582.html