利用Apache commons exec 实现指定应用打开对应文件

         在实际工作中，我们有时候需要指定某一个应用，打开某一个文件。比如用播放器打开一个MP3音乐文件，用记事本打开一个文本文件。不过有的应用需要一些额外的参数，在具体使用的时候要注意。

package test.ffm83.commons.exec;

import org.apache.commons.exec.CommandLine;

importorg.apache.commons.exec.DefaultExecutor;

importorg.apache.commons.exec.ExecuteWatchdog;

importorg.apache.commons.exec.PumpStreamHandler;

importorg.apache.commons.io.output.ByteArrayOutputStream;

/**

 * 通过commonsexec指定某一个应用打开某一个文件，比如用写字本打开txt文件

 *@author 范芳铭

 */

public class EasyExecFile {

         publicstatic void main(String[] args) {

                   EasyExecFileexec = new EasyExecFile();

                   exec.notepadReadFile("d:/ffm83/ffm83.txt");

         }

         publicvoid notepadReadFile(String filePath) {

                   Stringcommand = "notepad.exe " + filePath;

                   try{

                            ByteArrayOutputStreamoutputStream = new ByteArrayOutputStream();

                            ByteArrayOutputStreamerrorStream = new ByteArrayOutputStream();

                            //命令行处理

                            CommandLinecommandline = CommandLine.parse(command);

                            //进行执行体

                            DefaultExecutorexec = new DefaultExecutor();

                            exec.setExitValues(null);

                            //利用监视狗来设置超时

                            ExecuteWatchdogwatchdog = new ExecuteWatchdog(60000);

                            exec.setWatchdog(watchdog);

                            PumpStreamHandlerstreamHandler = new PumpStreamHandler(

                                               outputStream,errorStream);

                            exec.setStreamHandler(streamHandler);

                            exec.execute(commandline);//执行

                            Stringout = outputStream.toString("gbk");

                            Stringerror = errorStream.toString("gbk");

                            System.out.println(out);

                            System.err.println(error);

                   }catch (Exception e) {

                            e.printStackTrace();

                   }

         }

}

运行之后，打开了对应的txt文件。将文件关闭之后，进程结束。