获取网络图片并转为base64编码

Base64 jar包下载地址：http://download.csdn.net/detail/u010339699/5383203

public static void main(String[] args) {
		String base64Img = null;
		try {
			base64Img = GetUrlImageToBase64("http://i4.qhimg.com/dr/270_500_/t019e5e3b6849035f6d.jpg");
		} catch (Exception e) {
			e.printStackTrace();
		}
		System.out.println(base64Img);
	}

/**
	 * 获取网络图片并转为Base64编码
	 * 
	 * @param url
	 *            网络图片路径
	 * @return base64编码
	 * @throws Exception
	 */
	public static String GetUrlImageToBase64(String url) throws Exception {
		if (url == null || "".equals(url.trim()))
			return null;
		URL u = new URL(url);
		// 打开图片路径
		HttpURLConnection conn = (HttpURLConnection) u.openConnection();
		// 设置请求方式为GET
		conn.setRequestMethod("GET");
		// 设置超时响应时间为5秒
		conn.setConnectTimeout(5000);
		// 通过输入流获取图片数据
		InputStream inStream = conn.getInputStream();
		// 读取图片字节数组
		byte[] data = new byte[inStream.available()];
		inStream.read(data);
		inStream.close();
		// 对字节数组Base64编码
		BASE64Encoder encoder = new BASE64Encoder();
		// 返回Base64编码过的字节数组字符串
		return encoder.encode(data);
	}