Java Runtime.getRuntime().exec()，隐藏控制台画面
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Runtime.getRuntime().exec(), hide the console screen
提问by
I am executing a batch file using Java code. The code is given below:
我正在使用 Java 代码执行批处理文件。代码如下：
Process proc = null;
proc = Runtime.getRuntime().exec("cmd /c start somebat.bat");
With this, the normal command prompt screen gets open. Now I want to suppress/hide the command prompt window(the black one). I found somewhere that if I remove the start attribute from the command, it doesn't appear but when removing it from the command, the command doesn't executes and no exceptions are also shown.
这样，正常的命令提示符屏幕就会打开。现在我想抑制/隐藏命令提示符窗口（黑色的）。我在某处发现，如果我从命令中删除 start 属性，它不会出现，但是当从命令中删除它时，该命令不会执行，也不会显示任何异常。
Can any body tell me how to suppress this window?
任何人都可以告诉我如何抑制这个窗口？
回答by gubby
I dont know windows very well, but I suggest you omit the "cmd" bit of the command. cmd.exe is the windows terminal. Just a guess. Look up the other exec() methods, there is one which takes the command executable to run, and the arguments. On UNIX at least, you can't normally do anything a shell doesn't support (like piping the output to a file) since those are shell features and not done by the called program. Could be why you find if you remove the cmd prefix some things don't work.
我不太了解windows，但我建议你省略命令的“cmd”位。cmd.exe 是 windows 终端。只是一个猜测。查找其他 exec() 方法，有一个需要运行命令可执行文件和参数。至少在 UNIX 上，您通常不能执行 shell 不支持的任何操作（例如将输出通过管道传输到文件），因为这些是 shell 功能而不是由被调用程序完成的。可能就是为什么您会发现如果删除 cmd 前缀，某些事情将不起作用。
try just:
试试吧：
Process proc = Runtime.getRuntime().exec("somebat.bat");
Process proc = Runtime.getRuntime().exec("somebat.bat");
回答by jitter
Add /Q
添加 /Q
Runtime.getRuntime().exec( "cmd /c /Q start somebat.bat");
回答by Brian Agnew
Have you tried
你有没有尝试过
start /min "title" "c:\path\batchfile.bat"
This will run your batch file without the window. It will still appear in the taskbar, however (since it's minimised)
这将在没有窗口的情况下运行您的批处理文件。它仍然会出现在任务栏中，但是（因为它被最小化了）
回答by kgiannakakis
Have a look at this forum post. One of the answers suggest to use a vbs scriptto hide the window.
回答by John Smithers
Have you tried the B option of "start"?
你有没有试过“开始”的B选项？
proc = Runtime.getRuntime().exec("cmd /c start /B somebat.bat");
Edit:
Ok, Anish, that is funny that your code is not executed.
I set up a unit test:
编辑：
好的，Anish，有趣的是你的代码没有被执行。
我设置了一个单元测试：
Process proc = null;
try
{
proc = Runtime.getRuntime().exec("cmd /c start /B D:\temp\_test\somebat.bat");
proc = Runtime.getRuntime().exec("cmd /c call D:\temp\_test\somebat.bat");
proc = Runtime.getRuntime().exec("D:\temp\_test\somebat.bat");
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
My somebat.bat file looks like this:
我的 somebat.bat 文件如下所示：
rem somebat.bat:
d:
cd D:\temp\_test
copy somebat.bat somebat2.bat
All three versions in the try-block above work in my scenario. Somebat.bat is copied to somebat2.bat without a command window popping up (what happens, if I use your call, shown in your question).
上面 try-block 中的所有三个版本都适用于我的场景。Somebat.bat 被复制到 somebat2.bat 没有弹出命令窗口（会发生什么，如果我使用你的电话，显示在你的问题中）。
Edit 2:Next round ;-)
Anish, can you show us how your somebat.bat and your ant file looks like?
Because all of the three calls below work in my scenario:
编辑 2：下一轮 ;-)
Anish，你能告诉我们你的 somebat.bat 和你的 ant 文件是什么样的吗？
因为以下所有三个调用都适用于我的场景：
test code:
测试代码：
Process proc = null;
proc = Runtime.getRuntime().exec("cmd /c start /B c:\temp\_test\somebat.bat");
proc = Runtime.getRuntime().exec("cmd /c call c:\temp\_test\somebat.bat");
proc = Runtime.getRuntime().exec("c:\temp\_test\somebat.bat");
somebat.bat:
somebat.bat：
cd\temp\_test
ant mycopy
build.xml:
构建.xml：
<?xml version="1.0"?>
<project name="testproj" default="mycopy" basedir=".">
<target name="mycopy">
<copy file="myfile.txt" tofile="mycopy.txt" />
</target>
</project>
myfile.txt: arbitrary text file
myfile.txt：任意文本文件
回答by gustavo
Try this:
尝试这个：
Runtime.getRuntime().exec(cmd.exe /K C:/path/batchfile.bat);
Runtime.getRuntime().exec(cmd.exe /KC:/path/batchfile.bat);
回答by user1768108
Process proc = null;
proc = Runtime.getRuntime().exec("cmd /c start C:\temp\somebat.bat");
回答by erdem
You can use "run" instead of "start".
您可以使用“运行”而不是“开始”。
Runtime.getRuntime().exec("cmd /c run somebat.bat");
Runtime.getRuntime().exec("cmd /c run somebat.bat");
