使用 Lombok @Jacksonized 抛出 InvalidDefinitionException

Question

我无法让它工作（使用 @Jacksonized）

@Value
@Builder
@Jacksonized
public class Flight {
    private String id;
    private String destination;
    private int flightTime;
    private int flightDuration;

}

使用以下设置

@RestController
public class FlightController {
    @PostMapping("/flights")
    public Flight create(@RequestBody Flight flight) {
        return Flight.builder()
                .id(UUID.randomUUID().toString())
                .destination(flight.getDestination())
                .flightTime(flight.getFlightTime())
                .flightDuration(flight.getFlightDuration())
                .build();
    }
}

这是基于 lombok-1.18.22 附带的 spring-boot-2.6.2。我得到的错误是

2022-01-06 01:13:01.899 DEBUG 14672 --- [nio-8080-exec-2] o.s.web.method.HandlerMethod             : Could not resolve parameter [0] in public com.trial.lombokjackson.Flight com.trial.lombokjackson.FlightController.create(com.trial.lombokjackson.Flight): Type definition error: [simple type, class com.trial.lombokjackson.Flight]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.trial.lombokjackson.Flight` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (PushbackInputStream); line: 2, column: 5]
2022-01-06 01:13:01.902 DEBUG 14672 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Failed to complete request: org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class com.trial.lombokjackson.Flight]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.trial.lombokjackson.Flight` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (PushbackInputStream); line: 2, column: 5]
2022-01-06 01:13:01.907 ERROR 14672 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class com.trial.lombokjackson.Flight]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.trial.lombokjackson.Flight` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (PushbackInputStream); line: 2, column: 5]] with root cause

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.trial.lombokjackson.Flight` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (PushbackInputStream); line: 2, column: 5]

// omitted the rest of the stack trace

但是，如果我将我的 pojo 更改为

@Value
@Builder
@JsonDeserialize(builder = Flight.FlightBuilder.class)
public class Flight {
    private String id;
    private String destination;
    private int flightTime;
    private int flightDuration;

    @JsonPOJOBuilder(withPrefix = "")
    public static class FlightBuilder { }

}

效果很好。根据我在各种网站和文档上的研究，@Jacksonized 应该取代我为 @JsonDeserialize(builder = Flight.FlightBuilder.class) 和 @JsonPOJOBuilder(withPrefix = "")

所做的

我是不是漏掉了什么明显的东西？

如果需要其他信息，请告诉我

谢谢

Answer 1

我想通了这个问题。这是由 lombok (1.18.12) 的旧版本引起的，该版本与 VSCode 到 vscode-lombok-plugin 一起安装，并且 @Jacksonized 仅在 1.18.14 之后可用

github-repo 中也创建了多个问题，但似乎不再维护了。

最简单的方法是

退出VSCode
从lombok
导航到%userprofile%\vscode\extensions\gabrielbb.vscode-lombok-1.0.1\server，删除现有的lombok.jar，复制下载的lombok.jar并放入目录
开始VSCode
按F1或Ctrl + Shift + P和selectJava: Clean Java Language Server Workspace
出现提示时重新启动 VSCode

现在应该可以了

使用 Lombok @Jacksonized 抛出 InvalidDefinitionException

Using Lombok @Jacksonized throws InvalidDefinitionException

java

jackson

lombok

spring-boot

jackson-databind