我使用Spring boot RESTful API并在执行POST请求时收到415错误。以下提供了cURL请求，
$ curl -i -X POST -H "Content-Type:application/json" -d "{\"name_of_doctor\" : \"Monika\", \"status\": \"true\", \"price\": \"12.5\"}" http://localhost:8080/api/v1/appointments/createAppointment
响应在这里
HTTP/1.1 415
Content-Type: application/json;charset=UTF-8
Transfer-Encoding: chunked
Date: Fri, 08 Feb 2019 09:05:04 GMT
{"timestamp":"2019-02-08T09:05:04.560+0000","status":415,"error":"Unsupported Media Type","message":"Content type 'application/json;charset=UTF-8' not supported","path":"/api/v1/appointments/createAppointment"}
API处理HTTP请求，
@Slf4j
@RequiredArgsConstructor
@RestController
@RequestMapping("/api/v1/appointments")
public class AppointmentAPI {
@Autowired
private AppointmentService service;
@GetMapping("/getAll")
public ResponseEntity<List<Appointment>> findAll() {
return ResponseEntity.ok(service.findAll());
}
@PostMapping(value = "/createAppointment", consumes = "application/json;charset=UTF-8", produces = "application/json;charset=UTF-8")
public ResponseEntity<Appointment> create(@RequestBody Appointment appointment) {
java.sql.Date date = new java.sql.Date(Calendar.getInstance().getTime().getTime());
java.sql.Time time = new java.sql.Time(Calendar.getInstance().getTime().getTime());
appointment.setAppointment_date(date);
appointment.setCraeted_at(time);
service.save(appointment);
return ResponseEntity.status(HttpStatus.CREATED).body(appointment);
}
}
该模型可能很有趣，因此，在下面提供，
@Entity
@JsonDeserialize(builder = Appointment.class)
public class Appointment {
// id
// created_at
// appointment_date
// name_of_doctor
// status (Available or Booked)
// price
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column
private java.sql.Time craeted_at;
@Column
private java.sql.Date appointment_date;
@Column
private String name_of_doctor;
@Column
private boolean status;
@Column
private double price;
public Appointment(Time craeted_at, Date appointment_date, String name_of_doctor, boolean status, double price) {
this.craeted_at = craeted_at;
this.appointment_date = appointment_date;
this.name_of_doctor = name_of_doctor;
this.status = status;
this.price = price;
}
public Appointment(String name_of_doctor, boolean status, double price) {
this.name_of_doctor = name_of_doctor;
this.status = status;
this.price = price;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Time getCraeted_at() {
return craeted_at;
}
public void setCraeted_at(Time craeted_at) {
this.craeted_at = craeted_at;
}
public Date getAppointment_date() {
return appointment_date;
}
public void setAppointment_date(Date appointment_date) {
this.appointment_date = appointment_date;
}
public String getName_of_doctor() {
return name_of_doctor;
}
public void setName_of_doctor(String name_of_doctor) {
this.name_of_doctor = name_of_doctor;
}
public boolean isStatus() {
return status;
}
public void setStatus(boolean status) {
this.status = status;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof Appointment)) return false;
Appointment that = (Appointment) o;
return isStatus() == that.isStatus() &&
Double.compare(that.getPrice(), getPrice()) == 0 &&
Objects.equals(getId(), that.getId()) &&
Objects.equals(getCraeted_at(), that.getCraeted_at()) &&
Objects.equals(getAppointment_date(), that.getAppointment_date()) &&
Objects.equals(getName_of_doctor(), that.getName_of_doctor());
}
@Override
public int hashCode() {
return Objects.hash(getId(), getCraeted_at(), getAppointment_date(), getName_of_doctor(), isStatus(), getPrice());
}
@Override
public String toString() {
return "Appointment{" +
"id=" + id +
", craeted_at=" + craeted_at +
", appointment_date=" + appointment_date +
", name_of_doctor='" + name_of_doctor + '\'' +
", status=" + status +
", price=" + price +
'}';
}
}
运行窗口提供了错误堆栈，
2019-02-08 10:10:24.499 INFO 1337 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2019-02-08 10:10:24.499 INFO 1337 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2019-02-08 10:10:24.526 INFO 1337 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 26 ms
2019-02-08 10:10:24.640 WARN 1337 --- [nio-8080-exec-1] .c.j.MappingJackson2HttpMessageConverter : Failed to evaluate Jackson deserialization for type [[simple type, class com.appoint.manager.appointment.models.Appointment]]: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Builder class com.appoint.manager.appointment.models.Appointment does not have build method (name: 'build')
2019-02-08 10:10:24.642 WARN 1337 --- [nio-8080-exec-1] .c.j.MappingJackson2HttpMessageConverter : Failed to evaluate Jackson deserialization for type [[simple type, class com.appoint.manager.appointment.models.Appointment]]: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Builder class com.appoint.manager.appointment.models.Appointment does not have build method (name: 'build')
2019-02-08 10:10:24.645 WARN 1337 --- [nio-8080-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/json;charset=UTF-8' not supported]
有人可以告诉我这里是什么问题吗？
答案 0 :(得分：2)
由于指定了@JsonDeserialize(builder = Appointment.class)，因此收到此错误。这告诉杰克逊使用构建器Appointment.class（不是构建器）来反序列化有效负载。
尝试提供验证构建器或使用@JsonCreator，例如：
@JsonCreator
public Appointment(@JsonProperty("craeted_at") Time craeted_at, @JsonProperty("appointment_date") Date appointment_date,
@JsonProperty("name_of_doctor") String name_of_doctor, @JsonProperty("status") boolean status, @JsonProperty("price") double price) {
this.craeted_at = craeted_at;
this.appointment_date = appointment_date;
this.name_of_doctor = name_of_doctor;
this.status = status;
this.price = price;
}