Rest 默认JSON到对象映射不起作用

我想发布一条JSON消息，并想转换成Employee对象。JSON消息是

{“employee”：{“id”：2231，“name”：“jeffarry2231”，“niNumber”：“SN10KTL”}

.

雇员对象

public class Employee {
    private Long id;
    private String name;
    private String niNumber;
    ...
}

雇员管制员

@Controller
public class EmployeeController {

   @RequestMapping(value = "/employee/add/", method = RequestMethod.POST)
    public void addEmployee(Employee employee){
       System.out.println(employee.getName());
    }
}

发布请求的RestTemplate是

@Test
public void postMethod() {
    RestTemplate restTemplate = new RestTemplate();
    String jsonEmployee = "{'id':2231,'name':'jeffarry2231','niNumber':'SN10KTL'}}";

    HttpHeaders headers = new HttpHeaders();
    headers.setAccept(newArrayList(MediaType.APPLICATION_JSON));
    HttpEntity<String> requestEntity = new HttpEntity<String>(jsonEmployee, headers);
    restTemplate.exchange("http://localhost:8080/employee/add/", POST, requestEntity, String.class);
}

@测试
public void postMethod（）{
RestTemplate RestTemplate=新RestTemplate（）；
字符串jsonEmployee=“{'id'：2231，'name'：'jeffarry2231'，'niNumber'：'SN10KTL'}”；
HttpHeaders=新的HttpHeaders（）；
setAccept（newArrayList（MediaType.APPLICATION_JSON））；
HttpEntity requestEntity=新的HttpEntity（jsonEmployee，标题）；
restTemplate.exchange（“http://localhost:8080/employee/add/“、POST、requestEntity、String.class）；
}

applicationContext.xml已被删除

<mvc:annotation-driven/>

---

我希望MappingJacksonHttpMessageConverter在默认情况下使用，但它似乎没有转换，不确定这里缺少什么

尝试添加

@RequestBody

注释：

@RequestMapping(value = "/employee/add/", method = RequestMethod.POST)
public void addEmployee(@RequestBody Employee employee){
   System.out.println(employee.getName());
}

---

谢谢这就是我所缺少的：——）