根据阿里云图片路径生成 byte[]

朴灿烈づ我的快乐病毒、 2024-04-17 22:59 11阅读 0赞

主要用于sftp，ftp使用，所以分类就放在 ftp算了

/** * 根据阿里云图片路径生成byte字节数组 * * @param img 阿里云图片路径 * @return 返回图片的字节数组 */
        public byte[] imgPathBytes(String img) { 
    
            // 设置参数
            InputStream in = null;
            ByteArrayOutputStream byteArrOps = null;
            int length;
            byte[] buffer = new byte[1024 * 5];
            byte[] data = null;
    
            try { 
                URL url = new URL(img);
                HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
                urlConnection.setRequestMethod("GET");
                urlConnection.setReadTimeout(1000 * 60);
                if (urlConnection.getResponseCode() == 200) { 
                    in = urlConnection.getInputStream();
                    byteArrOps = new ByteArrayOutputStream();
                    while ((length = in.read(buffer)) != -1) { 
                        byteArrOps.write(buffer, 0, length);
                    }
                    byteArrOps.flush();
                    data = byteArrOps.toByteArray();
                    // 下载大小: data.length
                }
            } catch (Exception e) { 
                log.error("图片上传出现异常: {}, url为： {}", e, img);
                return null;
            } finally { 
                try { 
                    if (byteArrOps != null) { 
                        byteArrOps.close();
                    }
                    if (in != null) { 
                        in.close();
                    }
                } catch (IOException e) { 
                    e.printStackTrace();
                    log.error("关闭异常", e);
                }
            }
            return data;
        }