java获取网络图片上传到OSS的方法
OSS不支持通过一个网络地址来上传图片,所以若想将网络上的图片上传到OSS上需要走点弯路。
1、通过链接将图片下载到本地的一个文件夹下面
2、用OSS上传该文件夹下的文件
3、上传完成后删除本地的文件
具体代码如下:
//获取当前项目的绝对路径 public static String getTomcatPath(){ String nowpath; String tempdir; nowpath=System.getProperty("user.dir"); tempdir=nowpath.replace("bin", ""); //把bin 文件夹变到 webapps文件里面 return tempdir; } /** * 将图片下载下来后,上传到OSS * @param imgLink * @param downloadPath * @return * @throws Exception */ private String downloadImagAndUploadToOss(String imgLink,String downloadPath) throws Exception{ List<String> urlList=new ArrayList<String>(); urlList.add(imgLink); String imgName=DateUtil.formatDate(new Date(), "yyyyMMddhhmmss")+UuidUtil.createUUID()+".jpg"; downloadPicture(urlList,downloadPath,imgName); String key="carAlbum/"+imgName; String imgUrl=OSSObjectAPI.genOssPicUrl(OSSObjectAPI.XI_AN_BUCKET_NAME,OSSObjectAPI.XIAN_ACCESS_ID,OSSObjectAPI.XIAN_ACCESS_KEY, "http://oss-cn-zhangjiakou.aliyuncs.com/",downloadPath+imgName,key); FileUtil.delete(downloadPath+imgName); return imgUrl; } /** * 传入要下载的图片的url列表,将url所对应的图片下载到本地 * @param urlList * @throws Exception */ private void downloadPicture(List<String> urlList,String path,String imgName) throws Exception { if(urlList==null||urlList.size()==0){ return; } URL url = null; FileOutputStream fileOutputStream =null; InputStream inputStream =null; for (String urlString : urlList) { try { url = new URL(urlString); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.addRequestProperty("User-Agent","Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0"); connection.setConnectTimeout(10 * 1000); connection.setReadTimeout(15 * 1000); inputStream = connection.getInputStream(); byte[] buffer = new byte[1024]; int length; fileOutputStream= new FileOutputStream(path+ File.separator+ imgName); while ((length = inputStream.read(buffer)) != -1) { fileOutputStream.write(buffer, 0, length); } } catch (Exception e) { e.printStackTrace(); } finally{ inputStream.close(); fileOutputStream.flush(); fileOutputStream.close(); } } }
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