踩坑日记 - word转pdf

待我称王封你为后i 2022-05-26 13:18 406阅读 0赞

#### 说明 ####

最近这几天研究了下word转pdf的功能实现，特别记录下，方便以后查看。  
搜索了网上大部分的资料，总的来说，不外乎以下几种：  
1. openoffice，支持windows和linux环境，亲测，word转成pdf后，windows环境下格式没问题，但是linux环境下格式有些出入，且不好跟踪定位；  
2. word转html，再通过itext转成pdf，实现最方便，效果最差，跨平台，未测试  
3. libreoffice，支持跨平台，和openoffice的实现类似，亲测，实现效果比openoffice好；  
4. jacob + msOfficeWord + SaveAsPDFandXPS，保持原doc格式，效率最慢，只能在windows环境下进行，未测试；

最终，我选择使用libreoffice来实现word转pdf的功能。

#### openoffice实现 ####

1、安装openoffice服务  
[http://www.openoffice.org/download/index.html][http_www.openoffice.org_download_index.html]  
2、功能实现

/** * 若OFICCE转换PDF不经常调用，则调用时启动openoffice server 将Office文档转换为PDF. * 运行该函数需要用到OpenOffice * * @description * @param sourceFile * 源文件, 绝对路径. 可以是Office2003-2007全部格式的文档, Office2010的没测试. 包括.doc, .docx, .xls, .xlsx, .ppt, .pptx等. * 示例: D:/111/淮安药监_数据交换问题201404.doc * @param destFile * 目标文件. 绝对路径. 示例: D:/111/淮安药监_数据交换问题201404.pdf * @return 操作成功与否的提示信息. * 如果返回 -1, 表示找不到源文件, 或OpenOffice 安装目录路径配置错误; * 如果返回 0, 则表示操作成功; 返回1, 则表示转换失败 * @2014-6-18 上午10:55:01 */
    public int office2PDF(String sourceFile, String destFile) {
        initParameters();
        // connect to an OpenOffice.org instance running on port 8100
        OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
        try {
            File inputFile = new File(sourceFile);
            if (!inputFile.exists()) {
                return -1;// 找不到源文件, 则返回-1
            }
            // 如果目标路径不存在, 则新建该路径
            File outputFile = new File(destFile);
            if (!outputFile.getParentFile().exists()) {
                boolean mkdirs = outputFile.getParentFile().mkdirs();
                if (mkdirs == false) {
                    throw new RuntimeExceptionOwn("目录" + outputFile.getParentFile().getPath() + "创建失败");
                }
            }
    
            connection.connect();
            // convert
            DocumentConverter converter = new OpenOfficeDocumentConverter(
                    connection);
            converter.convert(inputFile, outputFile);
            // close the connection
            return 0;
        } catch (ConnectException e) {
            log.error("error:" + e);
        } finally {
            connection.disconnect();// 如果发生异常，系统也会切断连接
        }
        return 1;
    }
    
    
    private void initParameters() {
        Properties properties = new Properties();
        InputStream localInputStream = null;
        ClassLoader classLoader = Thread.currentThread()
                .getContextClassLoader();
        try {
            localInputStream = classLoader
                    .getResourceAsStream("gcloud/preview.properties");
            if (localInputStream == null)
                log.error("没有找到preview.properties配置文件！");
            else
                properties.load(localInputStream);
        } catch (IOException e) {
            if (log.isErrorEnabled()) {
                log.error("ERROR:", e);
            }
        } finally {
            try {
                if (localInputStream != null) {
                    localInputStream.close();
                }
            } catch (IOException e) {
                log.error("ERROR:", e);
            }
        }
        OPENOFFICE_HOME = properties.getProperty("OpenOffice_HOME").trim();
    
        osType = properties.getProperty("os").trim();
    
        if (OPENOFFICE_HOME == null || "".equals(OPENOFFICE_HOME)) {
            throw new RuntimeExceptionOwn(OPENOFFICE_HOME+" 请确定openoffice.org办公套件的安装目录路径是否设置正确！");
        }
        // 如果从文件中读取的URL地址最后一个字符不是 '\'，则添加'\'
        if (OPENOFFICE_HOME.charAt(OPENOFFICE_HOME.length() - 1) != '\\') {
            OPENOFFICE_HOME += "\\";
        }
        // 启动OpenOffice的服务
        String command = "";
        if ("Linux".equals(osType)) {
            command = OPENOFFICE_HOME + LinuxSoffice;
        } else {
            command = WinSoffice;
        }
    
        try {
            Runtime.getRuntime().exec(command);
        } catch (IOException e) {
            log.error("启动openoffice server失败，请确定openoffice.org办公套件的安装目录路径是否设置正确！");
            log.info(e);
        }
    
    }

#### libreoffice实现 ####

1、安装libreoffice服务  
[https://zh-cn.libreoffice.org/download/libreoffice-still/][https_zh-cn.libreoffice.org_download_libreoffice-still]  
2、功能实现

/** * 使用libreoffice实现word转pdf功能 * @param sourceFile word文件绝对路径 * @param destFile 生成pdf文件存放绝对路径 * @return * @throws IOException */
    public boolean wordConverterToPdf(String sourceFile, String destFile){
        try {
            File inputFile = new File(sourceFile);
            if (!inputFile.exists()) {
                return false;// 找不到源文件, 则返回-1
            }
            // 如果目标路径不存在, 则新建该路径
            File outputFile = new File(destFile);
            if (!outputFile.getParentFile().exists()) {
                boolean mkdirs = outputFile.getParentFile().mkdirs();
                if (mkdirs == false) {
                    throw new RuntimeExceptionOwn("目录" + outputFile.getParentFile().getPath() + "创建失败");
                }
            }
            Properties properties = new Properties();
            InputStream localInputStream = null;
            ClassLoader classLoader = Thread.currentThread()
                    .getContextClassLoader();
            try {
                localInputStream = classLoader
                        .getResourceAsStream("gcloud/preview.properties");
                if (localInputStream == null)
                    log.error("没有找到preview.properties配置文件！");
                else
                    properties.load(localInputStream);
            } catch (IOException e) {
                if (log.isErrorEnabled()) {
                    log.error("ERROR:", e);
                }
            } finally {
                try {
                    if (localInputStream != null) {
                        localInputStream.close();
                    }
                } catch (IOException e) {
                    log.error("ERROR:", e);
                }
            }
            OPENOFFICE_HOME = properties.getProperty("OpenOffice_HOME").trim();
            osType = properties.getProperty("os").trim();
    
            String[] cmdString;
            if (osType.contains("Windows")) {
                cmdString = new String[]{
                        "\""+OPENOFFICE_HOME+"\"",
                        "--headless",
                        "--invisible",
                        "--convert-to",
                        "pdf",
                        sourceFile,
                        "--outdir",
                        inputFile.getParent()
                };
            } else {
                cmdString = new String[]{
                        "\""+OPENOFFICE_HOME+"\"",
                        "--headless",
                        "--invisible",
                        "--convert-to",
                        "pdf",
                        sourceFile,
                        "--outdir",
                        inputFile.getParent()
                };
            }
    
            Runtime.getRuntime().exec(cmdString);
    
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

### 常见问题解决方案 ###

**1、使用Runtime.getRuntime().exec()调用转换命令一直无效或失败**

###### 方案1（我这边没效果） ######

Process proc = Runtime.getRuntime().exec(cmdString);
    
    final InputStream is1 = proc.getInputStream();
    new Thread(new Runnable() {
        public void run() {
            BufferedReader br = new BufferedReader(new InputStreamReader(is1));
            try {
                while(br.readLine()!=null);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    InputStream is2 = proc.getErrorStream();
    BufferedReader br2 = new BufferedReader(new InputStreamReader(is2));
    StringBuilder buf = new StringBuilder();
    String line = null;
    while((line = br2.readLine()) != null)
        buf.append(line);
    
    proc.getOutputStream().close();
    proc.getInputStream().close();
    proc.getErrorStream().close();

###### 方案2（我这边没效果） ######

Process proc = Runtime.getRuntime().exec(cmdString);
    StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(), "Error"); 
    StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(), "Output"); 
    errorGobbler.start(); 
    outputGobbler.start(); 
    proc.waitFor();

package com.inspur.dtdcommon.print.office.poi;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    
    public class StreamGobbler extends Thread { 
    
        InputStream is;
        String type;
    
        public StreamGobbler(InputStream is, String type) {
            this.is = is;
            this.type = type;
        }
    
        public void run() {
            try {
                InputStreamReader isr = new InputStreamReader(is);
                BufferedReader br = new BufferedReader(isr);
                String line = null;
                while ((line = br.readLine()) != null) {
                    if (type.equals("Error")) {
                        System.out.println("Error :" + line);
                    } else {
                        System.out.println("Debug:" + line);
                    }
                }
            } catch (IOException ioe) {
                ioe.printStackTrace();
            }
        }
    }

###### 方案3（可行）（将对应的参数存到数组中，解决空格的问题） ######

String[] cmdString;
    if (osType.contains("Windows")) {
        cmdString = new String[]{
                "\"D:\\Program Files\\LibreOffice 5\\program\\soffice.exe\"",
                "--headless",
                "--invisible",
                "--convert-to",
                "pdf",
                sourceFile,
                "--outdir",
                inputFile.getParent()
        };
    } else {
        cmdString = new String[]{};
    }
    
    Runtime.getRuntime().exec(cmdString);

**2、报错**

org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]

**解决办法**：换模板类型，doc改为docx

#### 相关资料 ####

**word转pdf**  
[https://www.cnblogs.com/wjqboke/articles/7646606.html][https_www.cnblogs.com_wjqboke_articles_7646606.html]  
**查看软件是否安装**  
[https://www.cnblogs.com/yuanqiangfei/p/8033000.html][https_www.cnblogs.com_yuanqiangfei_p_8033000.html]

**linux下安装swftools**  
[https://jingyan.baidu.com/article/93f9803f0f7099e0e46f55a1.html][https_jingyan.baidu.com_article_93f9803f0f7099e0e46f55a1.html]  
[https://blog.csdn.net/zhizaibide1987/article/details/28902229][https_blog.csdn.net_zhizaibide1987_article_details_28902229]

**linux下安装openoffice**  
[https://blog.csdn.net/u013132051/article/details/53304562][https_blog.csdn.net_u013132051_article_details_53304562]  
[https://www.cnblogs.com/manong–/p/8012324.html][https_www.cnblogs.com_manong_p_8012324.html]  
[https://blog.csdn.net/zouqingfang/article/details/44460823][https_blog.csdn.net_zouqingfang_article_details_44460823]  
[https://blog.csdn.net/Jsh\_sh/article/details/52992731][https_blog.csdn.net_Jsh_sh_article_details_52992731]

[http_www.openoffice.org_download_index.html]: http://www.openoffice.org/download/index.html
[https_zh-cn.libreoffice.org_download_libreoffice-still]: https://zh-cn.libreoffice.org/download/libreoffice-still/
[https_www.cnblogs.com_wjqboke_articles_7646606.html]: https://www.cnblogs.com/wjqboke/articles/7646606.html
[https_www.cnblogs.com_yuanqiangfei_p_8033000.html]: https://www.cnblogs.com/yuanqiangfei/p/8033000.html
[https_jingyan.baidu.com_article_93f9803f0f7099e0e46f55a1.html]: https://jingyan.baidu.com/article/93f9803f0f7099e0e46f55a1.html
[https_blog.csdn.net_zhizaibide1987_article_details_28902229]: https://blog.csdn.net/zhizaibide1987/article/details/28902229
[https_blog.csdn.net_u013132051_article_details_53304562]: https://blog.csdn.net/u013132051/article/details/53304562
[https_www.cnblogs.com_manong_p_8012324.html]: https://www.cnblogs.com/manong--/p/8012324.html
[https_blog.csdn.net_zouqingfang_article_details_44460823]: https://blog.csdn.net/zouqingfang/article/details/44460823
[https_blog.csdn.net_Jsh_sh_article_details_52992731]: https://blog.csdn.net/Jsh_sh/article/details/52992731