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");
}
}
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