如何设置。ProcessBuilder进程的bat环境变量

我需要执行。应用程序安装位置的bat文件,该文件仅设置了来自java程序的命令。

我试着按如下所示跑步

ProcessBuilder pb = new ProcessBuilder("cmd", "/c","C:\\apps\\vars.bat");
pb.command("C:\\apps\\test.exe","-u=user1", "-p=pwd1");
pb.redirectErrorStream(true);
pb.redirectOutput(outputFile);
Process process = pb.start();
try {
   process.waitFor();
} catch (InterruptedException e) {
  // TODO Auto-generated catch block
   e.printStackTrace();
 }
 process.getOutputStream().close();
 InputStream is = process.getInputStream();
 BufferedReader in = new BufferedReader(new InputStreamReader(is));
 String inputLine;
 while ((inputLine = in.readLine()) != null) {
   System.out.println(inputLine);
 }

@rem Defined by Install. Please Do NOT Remove The Following Lines.
set VAR1=110002020150715
set DB_CONNECT=test
set DB_SERVER=localhost
set ORACLE_SID=test
set XML_ENCODING=ISO-8859-1

问题是java程序无法识别中设置的任何环境变量。bat文件。

任何想法,如何设置环境变量集。使用ProcessBuilder创建要处理的bat文件。