java 图片转base64

java 图片转base64

/**
 * 将网络图片转成Base64码，此方法可以解决解码后图片显示不完整的问题
 * @param imgURL图片地址。
 * 例如：http://***.com/271025191524034.jpg
 * @return
 */
public static String imgBase64(String imgURL) {
    ByteArrayOutputStream outPut = new ByteArrayOutputStream();
    byte[] data = new byte[1024];
    try {
        // 创建URL
        URL url = new URL(imgURL);
        // 创建链接
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setConnectTimeout(10 * 1000);

        if(conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
            return "fail";//连接失败/链接失效/图片不存在
        }
        InputStream inStream = conn.getInputStream();
        int len = -1;
        while ((len = inStream.read(data)) != -1) {
            outPut.write(data, 0, len);
        }
        inStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    // 对字节数组Base64编码
    BASE64Encoder encoder = new BASE64Encoder();
    return encoder.encode(outPut.toByteArray());
}