在启动类中注入容器

 在有@service注解类中，自动装载

String url = "http://localhost:9083/api/update/"

public String updataPerson(PersonModel personModel) {
        ObjectMapper objectMapper = new ObjectMapper();
//设置头部
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.MULTIPART_FORM_DATA);
        String personString = null;
        try {
            personString  = objectMapper.writeValueAsString(personModel);
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
        HttpEntity<String> requestEntity = new HttpEntity<>(personString,headers);
       // ResponseEntity<String> responseEntity = restTemplate.postForEntity(url,personString, String.class);
        ResponseEntity<String> responseEntity = restTemplate.postForEntity(url,requestEntity, String.class);
        System.out.println(responseEntity.getBody());
        return responseEntity.getBody();
    }