JSP和Servlst里如何读取windows的环境变量？

[good_iis]

JSP和Servlst里如何读取windows的环境变量？

[GaryZhu]

try {
java.lang.Process myproc = Runtime.getRuntime().exec("cmd.exe /c set PATH");
InputStream is = myproc.getInputStream();
byte[] data = new byte[1024*2];
int i = 0;
is.read(data,0,1024*2);
System.out.println(new String(data));
is.close();
is = null;
} catch (IOException e) {
e.printStackTrace();
}

读取PATH，要读取CLASSPATH，则把PATH换成CLASSPATH