Question

我有 Java申请,例如需要重新启动(但还需要启动其他进程)。目前,通过关闭目前的申请,然后利用ShutdownHook和一个工序开始一个新案例。

我现在的问题是,新进程在某种背景下运作,没有自己的光辉窗口。在窗户机器上,可以使用新的黄色窗口。

cmd /c start "windowtitle" java -jar myApp.jar

但是,这产生了2个进程: cm碎过程和 j进程始于启动。举例来说,这使得启动进程的 st和梯子无法走下去,因为我们只能把这些溪流用于细化进程,而不是从开始指挥开始。

The very best solution for me would be to reuse the current console window for the new process but this seems somehow impossible to achieve as i did not find any information on how to do this. Additionally I would appreciate a solution which works on Unix machines.

Answer 1

Seems, you owe to use small console program-starter for java. It must start java and immediately exit.

#include <windows.h>
#include <tchar.h>

int main(int argc, char** argv)
{
  STARTUPINFO si = {sizeof(si)};
  PROCESS_INFORMATION pi = {};
  CreateProcess(NULL,_T("java -jar myApp.jar"),0,0,0,NORMAL_PRIORITY_CLASS,0,0,&si,&pi);
  return 0;
}

Answer 2

我不知道这是否是你重新思考的,但会有所帮助。

List<String> command = Arrays.asList("java", "-jar", "myApp.jar");
ProcessBuilder builder = new ProcessBuilder(command);
builder.redirectErrorStream(true);
Process process = builder.start();

InputStream is = process.getInputStream();
final InputStreamReader isr = new InputStreamReader(is);
final BufferedReader br = new BufferedReader(isr);

String line = null;
while ((line = br.getLine()) != null) {
    System.out.println("child process: " + line);
}

process.waitFor();

The builder.redirectErrorStream (true); will redirect thepinderr to setdout, and the loop will written the ocdout of the child process to the set out of You main application. 不要忘记<条码> 渔获量。 <代码>Streams和Buffers

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