我在将JSON映射到具有localdateTime的DTO时遇到了一个问题。

我跟踪了这个线程:JSON解析错误:无法构造java.time.LocalDate的实例:没有字符串参数构造函数/工厂方法来从字符串值反序列化

添加到build.gradle

implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.11.0'

下面是DTO中的变量:

@Data
public class MyDto {
    private Long teamId;

    private Map<String, List<Long>> details;

    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime dateOccurred;

}

然后加了这个

public class MyApplication {
    @Autowired
    private ObjectMapper objectMapper;

    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }

    @PostConstruct
    public void setUp() {
        objectMapper.registerModule(new JavaTimeModule());
    }
}

我错过什么了吗？ 我得到了这个错误

org.springframework.messaging.converter.MessageConversionException: Could not read JSON: Cannot construct instance of `java.time.LocalDateTime` (no Creators, like default construct, exist): no String-argument constructor/factory method to deserialize from String value ('2020-06-16 11:12:46')

谢谢！