图片转base64

public static void main(String[] args) {
		try {
			File f = new File("d:/var/1.jpg");
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			CommonUtil.copyStream(new FileInputStream(f), baos, 8 * 1024);
			String data = Base64.encodeBase64String(baos.toByteArray());
			System.out.println(data);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}