英文:
Lombok @RequiredArgsConstructor in multi-module project is not preserved
问题
Is @RequiredArgsConstructor
preserved accross modules?
I have a very simple project structure (2 maven modules):
- dependency-A
- sprint-boot-app
In dependency-A I declare following class:
@RequiredArgsConstructor
@RestController
@Validated
@Slf4j
public abstract class ControllerBase {}
Now in spring-boot-app:
@RequestMapping("/api/v1")
public class ConcreteController extends ControllerBase {
private final SomeDependency dependency;
After this IntelliJ says that
Variable dependency might not been initialized
If I check decompiled version of ControllerBase from spring-boot-app module:
@RestController
@Validated
public class ControllerBase {
private static final Logger log = LoggerFactory.getLogger(MyController.class);
public ControllerBase () {
}
}
Is it restriction of Lombok or I should configure maven-compiler plugin somehow, so @RequiredArgsConstructor
will be preserved? Please advise
英文:
Is @RequiredArgsConstructor preserved accross modules?
I have a very simple project structure (2 maven modules):
- dependency-A
- sprint-boot-app
In dependency-A I declare following class:
@RequiredArgsConstructor
@RestController
@Validated
@Slf4j
public abstract class ControllerBase {}
Now in spring-boot-app:
@RequestMapping("/api/v1")
public class ConcreteController extends ControllerBase {
private final SomeDependency dependency
After this IntelliJ says that
>Variable dependency might not been initialized
If I check decompiled version of ControllerBase from sprint-boot-app module:
@RestController
@Validated
public class ControllerBase {
private static final Logger log = LoggerFactory.getLogger(MyController.class);
public ControllerBase () {
}
}
Is it restriction of Lombok or I should configure maven-compiler plugin somehow, so @RequiredArgsConstructor will be preserved? Please advise
答案1
得分: 1
@RequiredArgsConstructor
会为每个需要特殊处理的字段生成一个参数的构造函数。所有未初始化的 final 字段都会获得一个参数,以及所有标记为 @NonNull
但在声明时未初始化的字段。对于那些标记为 @NonNull
的字段,还会生成显式的空值检查。如果任何标记为 @NonNull
的字段的参数包含 null,构造函数将抛出 NullPointerException。参数的顺序与字段在类中出现的顺序相匹配。
英文:
copy past from Lombok
@RequiredArgsConstructor
generates a constructor with one parameter for each field that requires special handling. All non-initialized final fields get a parameter, as well as any fields that are marked as @NonNull
that aren't initialized where they are declared. For those fields marked with @NonNull
, an explicit null check is also generated. The constructor will throw a NullPointerException if any of the parameters intended for the fields marked with @NonNull
contain null. The order of the parameters match the order in which the fields appear in your class.
答案2
得分: 1
Lombok注解无法继承。它们是在编译时添加代码到被注解的类中,并且仅限于被注解的类。即使您在同一模块中创建了一个子类,代码也不会传播。
您需要使用@RequiredArgsConstructor
为每个类进行注解。
英文:
Lombok annotations cannot be inherited.<br />
They are compile time directives that add code to the annotated class and only the annotated class.<br />
Even if you were creating a child class in the same module it would not propagate.
You will have to annotate each class with @RequiredArgsConstructor
.
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