用阿里云的oss上传外网图片

最新推荐文章于 2025-06-24 10:17:00 发布

可爱的黄油手

最新推荐文章于 2025-06-24 10:17:00 发布

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本文链接：https://blog.youkuaiyun.com/gengzhi1293443962/article/details/80353415

本文介绍了一种使用阿里云OSS进行文件上传的方法，包括文件上传的流程控制及异常处理策略。通过示例代码展示了如何利用OSSClient进行文件上传，并提供了完整的上传逻辑实现。

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private static boolean upload(OSSClient client, String bucketName, String key, String filePath) {
        int maxTry = 3;
        int downloadTurn = 0;
        boolean uploadSuccess = false;
        while (downloadTurn < maxTry) {
            try {
                File file = new File(filePath);
                ObjectMetadata objectMeta = new ObjectMetadata();
                objectMeta.setContentLength(file.length());
                if (!client.doesObjectExist(bucketName, key)) {
                    InputStream input = new FileInputStream(file);
                    client.putObject(bucketName, key, input, objectMeta);
                    uploadSuccess = true;
                    break;
                } else {
                    uploadSuccess = true;
                    break;
                }
            } catch (Exception e) {
                logger.error(e);
                maxTry++;
            }
        }
        return uploadSuccess;
    }

 /**
     * 文件上传
     *
     * @return
     */
    public String upload(File file) {
        String filepath = file.getAbsolutePath();
        OSSClient client = new OSSClient(bucketSource, accessKeyId, secretAccessKey);
        //上传图片
        String datePath = sdf.format(new Date()).replaceAll("-", "");
        Calendar calendar = Calendar.getInstance();
        String key = prefix + "/image/" + datePath + "/" + calendar.get(Calendar.HOUR_OF_DAY) + "/" + file.getName();
        boolean isSuccess = upload(client, bucketName, key, filepath);//指定bucket
        if (!isSuccess) {
            throw new RuntimeException("上传失败!");
        }
        return host + key;
    }

    @Override
    public String uploadImage(String imageUrl) {
        try {
            File file = download(imageUrl);
            String ossPath = ossUtil.upload(file);
            file.delete();
            return ossPath;
        } catch (Exception e) {
            logger.error(e);
            throw new RuntimeException("上传失败");
        }
    }


    /**
     * 下载文件
     *
     * @param imageUrl
     * @return
     * @throws IOException
     */
    private File download(String imageUrl) throws IOException {
        String suffix = imageUrl.substring(imageUrl.lastIndexOf(".") + 1);
        File tempFile = File.createTempFile("img", "." + suffix);
        tempFile.deleteOnExit();
        URL url = new URL(imageUrl);
        URLConnection con = url.openConnection();
        con.setConnectTimeout(5 * 1000);
        try (InputStream is = con.getInputStream()) {
            byte[] bs = new byte[1024];
            int len;
            try (OutputStream os = new FileOutputStream(tempFile)) {
                while ((len = is.read(bs)) != -1) {
                    os.write(bs, 0, len);
                }
            }
        }
        return tempFile;
    }

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