String url="http://10.10.14.XX:8080/sharePoint/deleteFile";
      RestTemplate client =new RestTemplate();
      HttpHeaders headers =new HttpHeaders();//  请勿轻易改变此提交方式，大部分的情况下，提交方式都是表单提交         headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);//  封装参数，千万不要替换为Map与HashMap，否则参数无法传递
      MultiValueMap params=new LinkedMultiValueMap();//  也支持中文params.add("username","用户名");
       params.add("fileName", "20201215162310_视频.mp4");
       HttpEntity requestEntity =new HttpEntity(params, headers);//  执行HTTP请求
      ResponseEntity response = client.exchange(url, HttpMethod.POST, requestEntity, Json.class);//  输出结果
      System.out.println(response.getBody());