http請求文件流

public class TestFileSvt extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {


        File file = new File("C:\\Users\\Administrator\\Desktop\\aaa\\test.txt");
        InputStream in = new FileInputStream(file);
        OutputStream outputStream = new BufferedOutputStream(resp.getOutputStream());
        //創建存放文件內容的數組
        byte[] buff =new byte[1024];
        //所讀取的內容使用n來接收
        int n;
        //當沒有讀取完時,繼續讀取,循環
        while((n=in.read(buff))!=-1){
            //將字節數組的數據全部寫入到輸出流中
            outputStream.write(buff,0,n);
        }
        //強制將緩存區的數據進行輸出
        outputStream.flush();
        //關流
        outputStream.close();
        in.close();
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}