我试图通过processBuilder运行带有linux选项的mencoder，但我只能从xterm运行它 . 当我试图直接运行它时，我在mencoder中得到错误 . 为了更好地解释，我有一个jtexfield，它显示mencoder的所有参数，以及输入和输出路径 . 这是可编辑的，我可以在那里更改一些参数 . 然后按下“开始”按钮，mencoder运行所有这些参数来转换文件 . 这很好用，使用xterm：

String[] command= {"/usr/bin/xterm","-e",
 lblCommand.getText().toString()}; 
                try {
                    proc = new ProcessBuilder(command).start();
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

但我不想让外部终端运行 . 所以我试图直接运行mencoder并在jtextfield上显示输出 . 这也有效，但是mencoder不像以前那样工作 . 如果我改为使用代码：

String command= {"/usr/bin/mencoder",lblCommand.getText().toString()}; 
                try {
                    proc = new ProcessBuilder(command).start();
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

然后我没有得到这样的目录错误文件：

java.io.IOException：无法运行程序“/ usr / bin / mencoder -sub”/media/Data/input.srt“-subcp iso-8859-7 -spualign 2 -subpos 96 -subfont-text-scale 3.3 - vf pp = lb -ovc lavc -lavcopts vbitrate = 1200 -oac copy“/media/Data/input.avi”-o“/media/Data/dvd/test.avi”“：error = 2，没有这样的文件或目录at java.lang.ProcessBuilder.start（ProcessBuilder.java:1048）at burnsub.MainWindow $ 3.actionPerformed（MainWindow.java:190）at javax.swing.AbstractButton.fireActionPerformed（AbstractButton.java:2022）at javax.swing.AbstractButton $ Handler.actionPerformed（AbstractButton.java:2348）javax.swing.DefaultButtonModel.fireActionPerformed（DefaultButtonModel.java:402）at javax.swing.DefaultButtonModel.setPressed（DefaultButtonModel.java:259）at javax.swing.plaf.basic . BasicButtonListener.mouseReleased（BasicButtonListener.java:252）at java.awt.Component.processMouseEvent（Component.java：6533）at java.awt.Component.processEvent（Component，javax.swing.JComponent.processMouseEvent（JComponent.java:3324）的.java ：7198）java.awt.Container.processEvent（Container.java：2236）at java.awt.Component.dispatchEventImpl（Component.java:4889）at java.awt.Container.dispatchEventImpl（Container.java:2294）at java .awt.Component.dispatchEvent（Component.java:4711）在java.awt.LightweightDispatcher.retargetMouseEvent（Container.java:4888）java.awt.LightweightDispatcher.processMouseEvent（Container.java:4525）java.awt.LightweightDispatcher上 . dispatchEvent（Container.java:4466）位于java.awt.Compind上的java.awt.Container.dispatchEventImpl（Container.java:2280），java.awt.Component.dispatchEvent（Component.java）中的java.awt.Window.dispatchEventImpl（Window.java:2746） ：4711）java.awt.EventQueue.access $ 700（EventQueue.java:97）java.awt.EventQueue $ 3.run（EventQueue.java:709）java.awt.EventQueue.dispatchEventImpl（EventQueue.java:758）在java.security.ProtectionDomain的java.security.AccessController.doPrivileged（Native Method）的java.awt.EventQueue $ 3.run（EventQueue.java:703）$ JavaSecurityAccessImpl.doIntersectionPrivilege（Protection Domain.java:80）java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:90）at java.awt.EventQueue $ 4.run（EventQueue.java:731）at java.awt.EventQueue $ 4.run（EventQueue .java：729）位于java.security.ProtectionDomain的Java.security.AccessController.doPrivileged（Native Method），java.awt.EventQueue.dispatchEvent（EventQueue.java:728）中的javaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:80） java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:201）在java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:116）在java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:105）在java.awt.EventDispatchThread位于java.awt.EventDispatchThread.run（EventDispatchThread.java:82）的java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:93）中的.pumpEvents（EventDispatchThread.java:101）引起：java.io.IOException：error = 2，java.lang.UNIXProc中没有这样的文件或目录java.lang.ProcessBuilder.start上的java.lang.ProcessImpl.start（ProcessImpl.java:134）中的java.lang.UNIXProcess . （UNIXProcess.java:247）中的ess.forkAndExec（本机方法）（ProcessBuilder.java:1029 ）...更多线程“AWT-EventQueue-0”中的异常java.lang.NullPointerException at burnsub.MainWindow $ 3.actionPerformed（MainWindow.java:195）at javax.swing.AbstractButton.fireActionPerformed（AbstractButton.java:2022） at javax.swing.AbstractButton $ Handler.actionPerformed（AbstractButton.java:2348）javax.swing.DefaultButtonModel.fireActionPerformed（DefaultButtonModel.java:402）at javax.swing.DefaultButtonModel.setPressed（DefaultButtonModel.java:259）at javax . swing.plaf.basic.BasicButtonListener.mouseReleased（BasicButtonListener.java:252）at java.awt.Component.processMouseEvent（Component.java：6533）at java.awt的javax.swing.JComponent.processMouseEvent（JComponent.java:3324） java.awt.Component.d的java.awt.Container.processEvent（Container.java:2236）中的.Component.processEvent（Component.java:6298）位于java.awt.Component.dispatchEvent（Component.java:4711）的java.awt.Container.dispatchEventImpl（Container.java:2294）中的ispatchEventImpl（Component.java:4889）at atjava.awt.LightweightDispatcher.retargetMouseEvent（Container.java:4888）在java.awt.LightweightDispatcher.processMouseEvent（Container.java:4525）在java.awt.LightweightDispatcher.dispatchEvent（Container.java:4466）在java.awt.Container中.dispatchEventImpl（Container.java:2280）在java.awt.Window.dispatchEventImpl（Window.java:2746）在java.awt.Component.dispatchEvent（Component.java:4711）在java.awt.EventQueue.dispatchEventImpl（EventQueue中 . Java的：758）在java.awt.EventQueue.access $ 500（EventQueue.java:97）在java.awt.EventQueue中$ 3.run（EventQueue.java:709）在java.awt.EventQueue中$ 3.run（EventQueue.java： 703）在java.security.AccessController.doPrivileged（本机方法）在java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:80）在java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:90）是java java.security.Acces的java.awt.EventQueue $ 4.run（EventQueue.java:729）中的.awt.EventQueue $ 4.run（EventQueue.java:731）位于java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread）的java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:80）中的sController.doPrivileged（Native Method）位于java.awt.EventQueue.dispatchEvent（EventQueue.java:728） . 的java：201）在java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:116）在java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:105）在java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:101）在java.awt.EventDispatchThread.run中的java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:93）（EventDispatchThread.java:82）

有没有其他办法来实现这个目标？

java