Java CMD命令

  //一般的执行方法，有时执行exe会卡在那    stmt要执行的命令
          public static void executive(String stmt) throws IOException, InterruptedException {
              Runtime runtime = Runtime.getRuntime();  //获取Runtime实例
              //执行命令
                 try {
                         String[] command = {"cmd", "/c", stmt};
                         Process process = runtime.exec(command);
                         // 标准输入流（必须写在 waitFor 之前）
                         String inStr = consumeInputStream(process.getInputStream());
                         // 标准错误流（必须写在 waitFor 之前）
                         String errStr = consumeInputStream(process.getErrorStream()); //若有错误信息则输出
                         int proc = process.waitFor();
                         if (proc == 0) {
                             System.out.println("执行成功");
                         } else {
                             System.out.println("执行失败" + errStr);
                         }
                    } catch (IOException | InterruptedException e) {
                         e.printStackTrace();
                     }
        }

    /**
      消费inputstream，并返回
           */
    public static String consumeInputStream(java.io.InputStream is) throws IOException {
                 java.io.BufferedReader br = new java.io.BufferedReader(new java.io.InputStreamReader(is,"GBK"));
                 String s;
                 StringBuilder sb = new StringBuilder();
                 while ((s = br.readLine()) != null) {
                         System.out.println(s);
                         sb.append(s);
                     }
                 return sb.toString();
             }