1、文件读取
@Test public void testFileInputStream(){ InputStream in = null; try { in = new FileInputStream("f:/a/hello.txt"); int readCount = 0; byte[] buffer = new byte[1024]; while((readCount = in.read(buffer, 0, 1024)) != -1){ String str = new String(buffer,0,readCount); System.out.println(str); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally{ if(in != null){ try { in.close(); } catch (IOException e) { e.printStackTrace(); } } } }