从Java执行命令,等待命令完成 [英] Executing a Command from Java and Waiting for the Command to Finish
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问题描述
在我的Java程序中,我创建了执行命令来运行这样一个批处理文件的过程:
In my Java program, I create a process that executes a command to run a batch file like this:
try {
File tempFile = new File("C:/Users/Public/temp.cmd");
tempFile.createNewFile();
tempFile.deleteOnExit();
setContents(tempFile, recipe.getText()); //Writes some user input to file
String cmd = "cmd /c start " + tempFile.getPath();
Process p = Runtime.getRuntime().exec(cmd);
int exitVal = p.waitFor();
refreshActionPerformed(evt);
} catch (InterruptedException ex) {
Logger.getLogger(mainFrame.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(mainFrame.class.getName()).log(Level.SEVERE, null, ex);
}
现在,我想有发生的事情是,命令
Now, what I would like to have happen is that the command
refreshActionPerformed(evt);
运行后,才称为批处理文件执行完毕。但是现在,它运行命令提示符打开之后。
runs only after the batch file I called has finished executing. But right now, it runs immediately after the Command Prompt opens.
我该如何解决这个问题?
How do I fix this?
推荐答案
我manged在别处找到了答案。为了保持最初的进程打开,直到该批处理文件完成了所有你需要的是/等待
I manged to find the answer elsewhere. To keep the initial process open until the batch file finished all you need is "/wait"
Process p = Runtime.getRuntime().exec("cmd /C start /wait filepath.bat");
int exitVal = p.waitFor();
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