无法读取HTTP消息：org.springframework.http.converter.HttpMessageNotReadableException

Question

当我点击URL时出现问题

我的控制器

请帮我找出标题中的错误

  @RestController
    @RequestMapping("/client")
    public class TestController {

        @PostMapping(produces = { "application/json", "application/xml" })

    public ResponseEntity<Client> createCustomer(@RequestBody Client customer) {

            System.out.println("Creat Customer: " + customer);

            return ResponseEntity.ok(customer);
        }

    }

Answer 1

如果您有一个“普通” spring web mvc，请尝试此操作。

@RequestMapping(value="client", produces = { "application/json", "application/xml" })
public @ResponseBody Customer createCustomer(
    @RequestParam Customer customer) {

        ...do some work like customerDao.create(customer);

        System.out.println("Create Customer: " + customer);

        return customer;
}

如果这是REST接口，则需要首先反序列化传入的数据。 如果您的数据是xml，则可以使用JAXB2-Marshaller进行。 如果您具有JSON数据，则可以以相同方式使用FasterXML（Jackson）。 您的代码可能看起来像

@RequestMapping(value="client", produces = { "application/json", "application/xml" })
public @ResponseBody Customer createCustomer(
    @RequestBody String body) {

        Source source = new StreamSource(new StringReader(body));
        RestRequest restRequest = (RestRequest)jaxb2Marshaller.unmarshal(source);

        Customer customer = (Customer) restRequest.getRequestData();

        ...do some work like customerDao.create(customer);

        System.out.println("Create Customer: " + customer);

        return customer;
}