创建tomcat的服务，删除服务，通过服务来启动项目

Runtime rt = Runtime.getRuntime();
    Process ps = null;
    ps = Runtime.getRuntime().exec("cmd.exe /c D:\\OnlineJudge\\bat\\exam2normal.bat");
    // ps =
    // rt.exec("cmd.exe /C D:\\OnlineJudge\\tomcat_exam\\bin\\startup.bat");
    try {
      ps.waitFor();
    } catch (InterruptedException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    int i = ps.exitValue();
    System.out.println(i);
    if (i == 0) {
      System.out.println("执行完成.");
    } else {
      System.out.println("执行失败.");
    }