每當我嘗試通過郵遞員發送此郵件時：
{
"date": "2021-11-05 12:32:32",
"start": "start",
"destination": "destination",
"provider": "provider",
"driver":1,
"vehicule":1
}
我收到錯誤 400，錯誤的請求，我同時使用 @restController 和 @requestBody 注釋，同時還將內容型別設定為 json。
我在除錯器上收到此錯誤：
2021-11-09 16:57:52.086 WARN 11748 --- [nio-8080-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type `java.util.Date` from String "2021-11-06 12:32:32.0": not a valid representation (error: Failed to parse Date value '2021-11-06 12:32:32.0': Cannot parse date "2021-11-06 12:32:32.0": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSSX', parsing fails (leniency? null)); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String "2021-11-06 12:32:32.0": not a valid representation (error: Failed to parse Date value '2021-11-06 12:32:32.0': Cannot parse date "2021-11-06 12:32:32.0": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSSX', parsing fails (leniency? null))
at [Source: (PushbackInputStream); line: 3, column: 17] (through reference chain: com.siam.HRAssistTool.Entity.Schedule["date"])]
我不明白我應該如何解決這個我認為與日期格式相關的問題
當我從 json 正文中洗掉時間并只留下日期時，我收到此錯誤：
2021-11-09 17:34:55.418 WARN 11748 --- [nio-8080-exec-4] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot construct instance of `com.siam.HRAssistTool.Entity.Vehicule` (although at least one Creator exists): no int/Int-argument constructor/factory method to deserialize from Number value (1); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.siam.HRAssistTool.Entity.Vehicule` (although at least one Creator exists): no int/Int-argument constructor/factory method to deserialize from Number value (1)
at [Source: (PushbackInputStream); line: 8, column: 20] (through reference chain: com.siam.HRAssistTool.Entity.Schedule["vehicule"])]
我的日程安排物體：
@Entity
public class Schedule implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id ;
private Date date ;
private String Start;
private String destination;
@OneToOne( fetch = FetchType.LAZY)
private Staff driver;
@OneToOne(fetch = FetchType.LAZY)
private Vehicule vehicule;
private String provider;
//constructors, getters and setters
}
我的控制器：
@RestController
public class ScheduleController {
@Autowired
ScheduleService scheduleService;
@PostMapping(value="/schedule/create")
public @ResponseBody String createSchedule( @RequestBody Schedule schedule) {
System.out.println(schedule.toString());
return scheduleService.addSchedule(schedule);
}
//other crud operation
}
uj5u.com熱心網友回復：
首先，替換Date為LocalDate，它是新 Java 時間 API 的一部分。有了這個，您可以配置 Jackson 以輕松處理這種復雜型別的序列化和反序列化。添加以下依賴項：
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
<version>2.11.0</version>
</dependency>
然后相應地配置杰克遜：
@Configuration
public class JacksonConfiguration {
@Bean
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
JavaTimeModule javaTimeModule = new JavaTimeModule();
objectMapper.registerModule(javaTimeModule);
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
return objectMapper;
}
}
然后，請避免在您的 中使用物體Controller作為回應或請求型別。相反，使用 DTO，它是您的核心模型物體的特定表示。
public class ScheduleCreationDto {
private LocalDate date;
private String Start;
private String destination;
private Long driverId; // I am guessing the ID is a Long
private Long vehiculeId; // I am guessing the ID is a Long
private String provider;
//constructors, getters and setters
}
這現在應該用作請求正文：
@RestController
public class ScheduleController {
@Autowired
ScheduleService scheduleService;
@PostMapping(value="/schedule/create")
public @ResponseBody String createSchedule(@RequestBody ScheduleCreationDto scheduleCreationDto) {
return scheduleService.addSchedule(schedule);
}
//other crud operation
}
您還需要進行更改，ScheduleService以便它創建一個Schedule基于ScheduleCreationDto. 大多數屬性需要一個簡單的映射，但其他（driverId和vehiculeId）需要您使用提供的 ID 從資料庫中實際獲取這些物體。應該在您的ScheduleService.
@Service
public class ScheduleService {
@Autowired
ScheduleRepository scheduleRepository;
@Autowired
DriverRepository driverRepository;
@Autowired
VehiculeRepository vehiculeRepository;
public String addSchedule(ScheduleCreationDto scheduleCreationDto) {
Driver driver = driverRepository.findById(scheduleCreationDto.getDriverId());
Vehicule vehicule = vehiculeRepository.findById(scheduleCreationDto.getVehiculeId());
Schedule schedule = new Schedule(scheduleCreationDto.getDate(), scheduleCreationDto.getStart(),
scheduleCreationDto.getDestination(), driver, vehicule, scheduleCreationDto.getProvider());
scheduleRepository.save(schedule);
return // whatever String you want to return, you should actually return the created Schedule, but that is a different topic
}
//other crud operation
}
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