Java 运行时.exec : doesn't change path

Question

java:

public static void startCmd(String path)
{
  Runtime rt = Runtime.getRuntime();
  Process pr = rt.exec(path);
  BufferedReader input = new BufferedReader(new InputStreamReader(pr.getInputStream(), "cp852")); 
  String line = null;

  // redirection output to console
  while((line = input.readLine()) != null) {
    System.out.println(line);
  }
  System.out.println("Error code: " + pr.waitFor());
}

public static void main(String[] args) {
  startCmd("c:\\run.bat");
}

run.bat:

cd c:\cmd\
application.exe

控制台输出:

D:\WORKSPACE\TEST>cd c:\cmd\ 
D:\WORKSPACE\TEST>application.exe // path should be changed from D:\WORKSPACE\TEST> to c:\cmd>
Error code: 0

为什么 cd c:\cmd\ 命令没有传递到 java 控制台应用程序？？？

Answer 1

在DOS下，当将路径更改为另一个驱动器时，必须先使用驱动器号才能设置目录。这是因为每个驱动器都有自己的工作目录。您需要将 C: 添加到批处理文件中:

C:
cd c:\cmd\
application.exe