Java运行CMD命令的两种方式并接收返回结果

方法一：

public static void main(String[] args) throws Exception {

        Runtime runtime = Runtime.getRuntime();

         

        /*

         * 执行指定的字符串命令

         * 相对路径现在当前目录找，然后去path找

         * 绝对路径直接在绝对路径里找

         */

        //runtime.exec("mspaint.exe");

         

        /*

         * 返回对创建的进程的管理对象

         */

        //Process p = runtime.exec("mspaint.exe");

        //Thread.sleep(10000);

        //杀死刚才创建的进程，打开资源管理器，10秒钟后进程消失

        //p.destroy();

         

         

        /*

         * 还可以用指定方式打开文件

         * 默认是在当前目录找，但是eclipse里面有个src

         * 在eclipse里会去src的上层目录找

         */

        runtime.exec("notepad.exe src/net/xsoftlab/baike/RuntimeDemo.java");

        //后续是执行命令和 并接收返回的结果

1. /*Process process = runtime.exec("cmd.exe /c dir d:\\");
2. InputStream inputStream = process.getInputStream();
4. BufferedReader br = new BufferedReader(new InputStreamReader(inputStream,"gb2312"));
5. String line = null;
6. while((line = br.readLine()) != null) {
7. System.out.println(line);
8. }*/




    }




方法二：

1. public static void main(String [] args) throws IOException {
2. ProcessBuilder builder = new ProcessBuilder();
3. List<String> list = new ArrayList<>();
4. list.add("cmd.exe");
5. list.add("/c");
6. list.add("dir");
7. list.add("d:\\");
8. Process process = builder.command(list).start();
9. InputStream inputStream = process.getInputStream();
11. BufferedReader br = new BufferedReader(new InputStreamReader(inputStream,"gb2312"));
12. String line = null;
13. while((line = br.readLine()) != null) {
14. System.out.println(line);
15. }
16. }