在线转换openoffice

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;

import org.apache.log4j.Logger;
import org.springframework.util.Assert;

import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;

public class ConvertUtil {

    private static Logger log = Logger.getLogger(SendMessageUtil.class); 

    /**
     * Method name: convertOfficeToSwf <BR>
     * Description: 文件转换方法，可以把.doc .docx .ppt .pptx .xls .xlsx 文件转换成.swf文件 <BR>
     * Remark: <BR>
     * @param filepath  传入文件的路径及文件名(最前面不要带"/") 示例:   aa/bb.docx<BR>
     * @return  boolean 发送结果 true:转换成功,false:转换失败<BR>
     */
    @SuppressWarnings("resource")
    public static boolean convertOfficeToSwf(String filepath) {
        // 定义服务器的地址、用户名、密码
        String hostname = PropertyUtil.getConfigureProperties("SERVER_HOST");
        String username = PropertyUtil.getConfigureProperties("USER_NAME");
        String password = PropertyUtil.getConfigureProperties("PASS_WORD") + PropertyUtil.getDatabaseProperties("keyword");
        // 从property文件中获取路径前辍
        String filepath_prefix = PropertyUtil
                .getConfigureProperties("FILE_PATH");
        filepath = filepath_prefix + filepath;
        String fileName = filepath.substring(0, filepath.lastIndexOf("."));
        // 拼出pdf和swf文件的路径
        String pdfFile = fileName + ".pdf";
        String swfFile = fileName + ".swf";
        log.info("pdf file path： " + pdfFile);
        log.info("swf file path： " + swfFile);

        String commadStr = "java -jar /home/hxj/jodconverter-2.2.2/lib/jodconverter-cli-2.2.2.jar "
                + filepath
                + " "
                + pdfFile
                + ";export LD_LIBRARY_PATH=/usr/local/lib;pdf2swf "
                //+ ";pdf2swf "
                + pdfFile
                + " -o "
                + swfFile;
        log.info("command string： " + commadStr);

        // 指明连接主机的IP地址
        Connection conn = new Connection(hostname);
        Session ssh = null;
        try {
            // 连接到主机
            conn.connect();
            // 使用用户名和密码校验
            boolean isconn = conn.authenticateWithPassword(username, password);
            if (!isconn) {
                log.info("ssh connect fail，username or password error");
            } else {
                log.info("ssh connect success");
                ssh = conn.openSession();
                // 使用多个命令用分号隔开
                ssh.execCommand(commadStr.toString());
                // 只允许使用一行命令，即ssh对象只能使用一次execCommand这个方法，多次使用则会出现异常
                // 将屏幕上的文字全部打印出来

                InputStream stdout = new StreamGobbler(ssh.getStdout());
                InputStream stderr = new StreamGobbler(ssh.getStderr());
                BufferedReader stdoutReader = new BufferedReader(
                                    new InputStreamReader(stdout));
                            BufferedReader stderrReader = new BufferedReader(
                                    new InputStreamReader(stderr));  

                log.info("Here is the output from stdout:");
                while (true) {
                    String line = stdoutReader.readLine();
                    if (line == null)
                        break;
                    log.info(line);
                }

                log.info("Here is the output from stderr:");
                while (true) {
                    String line = stderrReader.readLine();
                    if (line == null)
                        break;
                    log.info(line);
                }

                log.info("ssh finish");
            }
            // 连接的Session和Connection对象都需要关闭
            ssh.close();
            conn.close();
            return true;
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            log.error("file convert fail");
            return false;
        }
    }

    // 视频转码后的文件后缀
    private static final String FLV_FILE_EXT = ".flv";
    // 视频转码开关： on表示开启；off表示关闭
    private static final String VIDEO_CONVERT_SWITCH_ON = "on";
    // 支持的视频类型文件后缀名，暂时只有一种，可以按需添加
    // 注意需要对应修改相关的上传控件的参数：添加对应的后缀名
    private static final Set<String> SUPPORTED_VIDEO_TYPE_SET;
    static {
        SUPPORTED_VIDEO_TYPE_SET = new HashSet<String>();
        SUPPORTED_VIDEO_TYPE_SET.add(".mp4");
    }

    /**
     * @author JFTT)wangyifeng
     * Method name: needConvertToFlv <BR>
     * Description: 判断是否需要进行视频转码 <BR>
     * Remark: <BR>
     * @param fileExt 文件后缀名
     * @return  boolean 返回传入的文件后缀类型是否需要进行视频转码：true需要；false不需要<BR>
     */
    public static boolean needConvertToFlv(String fileExt) {
        String VIDEO_CONVERT_SWITCH = PropertyUtil
                .getConfigureProperties("VIDEO_CONVERT_SWITCH");
        log.info(String.format("VIDEO_CONVERT_SWITCH value is %s.",
                VIDEO_CONVERT_SWITCH));
        // 视频转码开关不等于VIDEO_CONVERT_SWITCH_ON时，固定返回false，即认为不需要转码
        if (!VIDEO_CONVERT_SWITCH_ON.equals(VIDEO_CONVERT_SWITCH)) {
            return false;
        }
        Assert.hasText(fileExt);
        return SUPPORTED_VIDEO_TYPE_SET.contains(fileExt.toLowerCase());
    }

    /**
     * @author JFTT)wangyifeng
     * class name:ConvertToFlvFailedException <BR>
     * class description: 视频转码异常类（运行时异常） <BR>
     * Remark: <BR>
     * @version 1.00 2015/09/24
     */
    public static class ConvertToFlvFailedException extends RuntimeException {
        private static final long serialVersionUID = 1L;

        public ConvertToFlvFailedException(String message) {
            super(message);
        }

        public ConvertToFlvFailedException(String message, Throwable e) {
            super(message, e);
        }
    }

    /**
     * Method name: convertToFlv <BR>
     * Description: 视频文件转换方法，把常用的视频文件如：mp4,avi,3gp等转换成flv文件用于网页播放 <BR>
     * Remark: <BR>
     * 1.调用该方法前，请先用needToBeConvertedToFlv方法来确认待转换文件是否支持视频转码<BR>
     * 2.视频转码失败时会抛出运行时异常：ConvertToFlvFailedException<BR>
     * @param filepath 传入文件的路径及文件名(最前面不要带"/") 示例:   aa/bb.docx<BR>
     * @return  String 发送结果 转换成功：转换后的文件路径及文件名；转换失败：抛出ConvertToFlvFailedException异常<BR>
     */
    @SuppressWarnings("resource")
    public static String convertToFlv(String filepath) {
        // 定义服务器的地址、用户名、密码
        String hostname = PropertyUtil.getConfigureProperties("SERVER_HOST");
        String username = PropertyUtil.getConfigureProperties("USER_NAME");
        String password = PropertyUtil.getConfigureProperties("PASS_WORD")
                + PropertyUtil.getDatabaseProperties("keyword");
        // 从property文件中获取路径前辍
        String filepath_prefix = PropertyUtil
                .getConfigureProperties("FILE_PATH");
        log.info("input video file: " + filepath_prefix + filepath);
        // 拿到文件扩展名
        String fileExt = filepath.substring(filepath.lastIndexOf("."),
                filepath.length());

        // 如果获取到的扩展名经判断无需转码，则扔异常
        if (!needConvertToFlv(fileExt)) {
            throw new ConvertToFlvFailedException(String.format(
                    "传入的视频文件不需要转码: %s.", filepath_prefix + filepath));
        }

        String fileName = filepath.substring(0, filepath.lastIndexOf("."));
        // 拼出flv文件的路径
        String flvFile = fileName + FLV_FILE_EXT;
        log.info("flv file path： " + filepath_prefix + flvFile);

        // 拼接命令字符串
        String commadStr = "ffmpeg -i "
                + filepath_prefix
                + filepath
                + " "
                + "-ab 128 -acodec libmp3lame -ac 2 -ar 22050 -qscale 10 -s 640*480 -r 15 "
                + filepath_prefix + flvFile;
        log.info("command string： " + commadStr);

        // 指明连接主机的IP地址
        Connection conn = new Connection(hostname);
        Session ssh = null;
        try {
            // 连接到主机
            conn.connect();
            // 使用用户名和密码校验
            boolean isconn = conn.authenticateWithPassword(username, password);
            if (!isconn) {
                log.info("ssh connect fail，username or password error");
                throw new ConvertToFlvFailedException(
                        "ssh connect fail，username or password error");
            }
            log.info("ssh connect success");
            ssh = conn.openSession();
            // 使用多个命令用分号隔开
            ssh.execCommand(commadStr.toString());
            // 只允许使用一行命令，即ssh对象只能使用一次execCommand这个方法，多次使用则会出现异常
            // 将屏幕上的文字全部打印出来

            InputStream stdout = new StreamGobbler(ssh.getStdout());
            InputStream stderr = new StreamGobbler(ssh.getStderr());
            BufferedReader stdoutReader = new BufferedReader(
                    new InputStreamReader(stdout));
            BufferedReader stderrReader = new BufferedReader(
                    new InputStreamReader(stderr));

            log.info("Here is the output from stdout:");
            while (true) {
                String line = stdoutReader.readLine();
                if (line == null)
                    break;
                log.info(line);
            }

            log.info("Here is the output from stderr:");
            while (true) {
                String line = stderrReader.readLine();
                if (line == null)
                    break;
                log.info(line);
            }

            log.info(String.format("ssh finished with exit status: %d",
                    ssh.getExitStatus()));

            if (ssh.getExitStatus() != 0) {
                throw new ConvertToFlvFailedException(
                        "file convert fail: command exit code is not 0!");
            }
            return flvFile;
        } catch (IOException e) {
            log.error("file convert fail", e);
            throw new ConvertToFlvFailedException("file convert fail", e);
        } finally {
            // 连接的Session和Connection对象都需要关闭
            if (ssh != null) {
                ssh.close();
            }
            if (conn != null) {
                conn.close();
            }
        }
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        convertOfficeToSwf("a.docx");
//        convertOfficeToSwf("b2.xlsx");
//        convertOfficeToSwf("c1.ppt");
//        convertOfficeToSwf("c2.pptx");
    }

}