如何使用json requestbody向后端spring rest控制器发送请求，并将请求param作为分片图像文件

// 创建包含请求参数的JSON对象
JSONObject requestBody = new JSONObject();
requestBody.put("param1", "value1");
requestBody.put("param2", "value2");

// 将JSON对象转换为字符串
String jsonBody = requestBody.toString();

// 发送HTTP POST请求到后端控制器
HttpClient httpClient = HttpClientBuilder.create().build();
HttpPost request = new HttpPost("http://your-backend-url");
request.setHeader("Content-Type", "application/json");
request.setEntity(new StringEntity(jsonBody));

HttpResponse response = httpClient.execute(request);

// 在后端Spring REST控制器中接收请求
@PostMapping("/your-endpoint")
public ResponseEntity<String> handleRequest(@RequestBody YourRequestObject requestObject, @RequestParam("file") MultipartFile file) {
    // 处理请求参数和分片图像文件
    String param1 = requestObject.getParam1();
    String param2 = requestObject.getParam2();
    // 处理分片图像文件，保存到服务器上的指定位置

    // 返回相应的处理结果
    return ResponseEntity.ok("Request processed successfully");
}