ProcessBuilder 在出现错误后卡住了
我正在尝试远程执行 .bat 文件并实现以下代码行：
ProcessBuilder processBuilder = new ProcessBuilder(command);
final Process process = processBuilder.start();
InputStream stderr = process.getErrorStream();
InputStreamReader isr = new InputStreamReader(stderr);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ((line = br.readLine()) != null) {
System.out.println(line);
}
process.waitFor();
System.out.println("Waiting ...");
System.out.println("Returned Value :" + process.exitValue());
但我的程序卡在 while 循环内。 它显示的错误是：
CMD.EXE was started with the above path as the current directory.
UNC paths are not supported. Defaulting to Windows directory.
它永远不会超出 while 循环。但它成功执行了脚本。 任何形式的帮助表示赞赏。谢谢
I am trying to execute a .bat file remotely and implementing following lines of code:
ProcessBuilder processBuilder = new ProcessBuilder(command);
final Process process = processBuilder.start();
InputStream stderr = process.getErrorStream();
InputStreamReader isr = new InputStreamReader(stderr);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ((line = br.readLine()) != null) {
System.out.println(line);
}
process.waitFor();
System.out.println("Waiting ...");
System.out.println("Returned Value :" + process.exitValue());
but my program gets stuck inside while loop.
The error it displays is:
CMD.EXE was started with the above path as the current directory.
UNC paths are not supported. Defaulting to Windows directory.
It never goes out of while loop.But it executes the script successfully.
Any sort of help is appreciated. Thanks
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您需要确保您也在处理 stderr，并且应该在单独的线程中处理两个流。
阅读此内容并确保您遵循所有建议。
编辑：查看您编写的代码，您似乎已经从这篇精确的文章中复制了代码。事实上，它看起来像清单 4.3 (MediocreExecJavac.java)。
You need to make sure you're also dealing with stderr, and you should be dealing with both streams in separate threads.
Read this and make sure you follow all the advice.
Edit: Looking at the code you've written, you seem to have reproduced code from this precise article. In fact, it looks like listing 4.3 (MediocreExecJavac.java).
在.start()之前添加redirectErrorStream(true)并读取getInputStream()。这将读取 stderr 并将其与 stdout 合并到一个响应中，该响应可以使用 getInputStream() 读取。
Add redirectErrorStream(true) before you .start() and read getInputStream(). This will read stderr and merge that with stdout into one response which can be read with getInputStream().