服务器之间的文件上传下载

• Z时代
• 2024-01-10
• 分类：综合

 public static GifResultDto uploadToGift(MultipartFile file, String suffix) {
        String url = new StringBuilder(GIFT_FILE_UPLOAD_URL).append(GIFT_FILE_NAMESPACE).append("/").append(getImgFlag(suffix)).toString();
        LOGGER.info("上传文件链接：" + url);
        String result = "";
        GifResultDto gifResultDto = new GifResultDto();
        try (CloseableHttpClient client = HttpClients.createDefault()) {
            HttpPost httpPost = new HttpPost(url);
            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            builder.addBinaryBody("filecontent", file.getInputStream(), ContentType.MULTIPART_FORM_DATA, new String(file.getOriginalFilename().getBytes("ISO-8859-1"), "UTF-8"));
            HttpEntity httpEntity = builder.build();
            httpPost.setEntity(httpEntity);
            try (CloseableHttpResponse response = client.execute(httpPost)) {
                HttpEntity responseEntity = response.getEntity();
                if (responseEntity != null) { // 将响应内容转换为字符串
                    result = EntityUtils.toString(responseEntity, Charset.forName("UTF-8"));
                    LOGGER.info("上传文件返回结果:{}", result);
                    gifResultDto = BeanJsonConversionUtil.jsonConversionBean(result, GifResultDto.class);
                    if (gifResultDto == null || gifResultDto.getStatusCode() == null || gifResultDto.getStatusCode() != 200) {
                        throw new RuntimeException(result);
                    }
                }
            }
        } catch (Exception e) {
            throw new RuntimeException("上传文件异常:", e);
        }
        return gifResultDto;
    }

下载：

public static byte[] downLoadFromGift(String type) throws Exception {
        String url = new StringBuilder(GIFT_FILE_DOWNLOAD_URL).append(GIFT_FILE_NAMESPACE).append("/").append(type).toString();
        LOGGER.info("下载文件链接：" + url);
        File desc = getFileByType(type);
        byte[] result;
        try (CloseableHttpClient httpclient = HttpClients.createDefault()) {
            HttpGet httpget = new HttpGet(url);
            httpget.setConfig(RequestConfig.custom().build());
            try (CloseableHttpResponse response = httpclient.execute(httpget)) {
                HttpEntity entity = response.getEntity();
                File folder = desc.getParentFile();
                folder.mkdirs();
                try (InputStream is = entity.getContent();
                     ByteArrayOutputStream os = new ByteArrayOutputStream()) {
                    StreamUtils.copy(is, os);
                    result = os.toByteArray();
                }
            } catch (Exception e) {
                throw new RuntimeException("文件下载失败......", e);
            }
        }
        return result;
    }

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