RestTemplate restTemplate = new RestTemplate();HttpHeaders headers = new HttpHeaders();HttpEntity<String> emEntity = new HttpEntity<String>(headers);String url = "文件的网络地址";UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url);try {ResponseEntity<byte[]> response = restTemplate.exchange(builder.build().toUri(), HttpMethod.GET,emEntity,byte[].class);if(null!=response.getBody()) {// 文件的格式可以由url获取File file = new File("/xxx/xxx/xxx.xxx");OutputStream output = new FileOutputStream(file);BufferedOutputStream bufferedOutput = new BufferedOutputStream(output);bufferedOutput.write(response.getBody());bufferedOutput.close();}} catch (FileNotFoundException e) {logger.info("错误1");} catch (IOException e) {logger.info("错误2");} catch (Exception e) {logger.info("错误3");}爆款云服务器s6 2核4G 低至0.46/天，具体规则查看活动详情