[英]How to debug this error?
我有这个错误,我已经尝试解决了很长一段时间,但无济于事。 我想将Java字符串传递给批处理文件。 但是有错误。
btnStart.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent args)
{
String fileToPath = chooser.getSelectedFile().getAbsolutePath();
try
{
//create new process
String command = "cmd /c start /wait "+DetectDrive+"\\imageinfo.bat";
Process p = Runtime.getRuntime().exec(new String[]{command,"\""+fileToPath+"\""});
//cause this process to stop until process p is terminated
p.waitFor();
}
catch (IOException | InterruptedException e1)
{
e1.printStackTrace();
}
}
}
我想将String fileToPath传递给批处理文件以用于其他目的。 例如在我的批处理文件中:如果有效,请echo %1
。 但是我遇到了很多错误,需要大量时间来解决。
这是我的错误:
java.io.IOException: Cannot run program "cmd /c start /wait E:\\imageinfo.bat": CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at Volatility$3.actionPerformed(Volatility.java:187)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$400(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 40 more
我不知道如何解决。 有人可以帮我吗? 我是Java的新手,但是调试一直是我的弱点。 任何帮助将不胜感激!!!
您正在将令牌组合成一个String( command
),但仍将String[]
传递给exec
。 这使执行人员感到困惑
String[] command =
new String[]{"cmd", "/c", "start", "/wait",
DetectDrive+"\\imageinfo.bat", fileToPath};
Runtime.getRuntime().exec( command );
将fileToPath的引用保留为exec。
后来
您可以在单独的线程中执行子流程,以避免阻塞您的应用程序。
Runtime.exec(String)
将整个字符串作为一个命令运行。 您应该使用Runtime.exec(String[])
,数组中的第一个字符串是命令,其他则是命令的参数。
您可以使用ProcessBuilder将参数传递到外部过程,这非常容易。以下是ProcessBuilder的示例:
Process process = new ProcessBuilder("C:\\PathToExe\\MyExe.exe","param1","param2").start();
其中param1和Param2是参数。您可以根据需要传递任意数量的参数。 希望这些回答您的问题。
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