RestTemplate &多部分/表单数据响应

// 创建RestTemplate对象
RestTemplate restTemplate = new RestTemplate();

// 创建请求参数
MultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
map.add("name", "John");
map.add("age", 25);
map.add("file", new FileSystemResource("path/to/file.jpg"));

// 创建请求头
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);

// 创建请求实体对象
HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(map, headers);

// 发送请求并获取响应
ResponseEntity<String> response = restTemplate.exchange("https://api.example.com/upload", HttpMethod.POST, requestEntity, String.class);

// 处理响应
String responseBody = response.getBody();

// 创建COS客户端
CosClient cosClient = new CosClient();

// 创建上传文件请求
PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, key, new File("path/to/file.jpg"));

// 执行上传文件请求
cosClient.putObject(putObjectRequest);

// 关闭COS客户端
cosClient.shutdown();