Question

在尝试映射我的域对象时，我得到以下StackOverflowError异常。我试图忽略导致循环依赖的属性无济于事。

我的域模型的核心是WorkoutSet，它有一个User和一个练习。

如果从WorkoutSetMapper中删除映射注释，则会按预期生成UserMapperImpl和ExerciseMapperImpl。

错误：（15,1）java：映射处理器中的内部错误： java.lang.StackOverflowError at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ UnaryVisitor.visit（Types.java:4652）在com.sun.tools.javac.code.Types.supertype（Types.java:2315）at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1966）at at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1955）at at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ DefaultTypeVisitor.visit（Types.java:4571）在com.sun.tools.javac.code.Types.asSuper（Types.java:1952）at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1968）at at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1955）at at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ DefaultTypeVisitor.visit（Types.java:4571）在com.sun.tools.javac.code.Types.asSuper（Types.java:1952）at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1975）at at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1955）at at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ DefaultTypeVisitor.visit（Types.java:4571）在com.sun.tools.javac.code.Types.asSuper（Types.java:1952）at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1975）at at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1955）at at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ DefaultTypeVisitor.visit（Types.java:4571）在com.sun.tools.javac.code.Types.asSuper（Types.java:1952）at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1975）at at com.sun.tools.javac.code.Types $ 13.visitClassType（Types.java:1955）at at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ DefaultTypeVisitor.visit（Types.java:4571）在com.sun.tools.javac.code.Types.asSuper（Types.java:1952）at com.sun.tools.javac.code.Types $ 4.visitClassType（Types.java:921）at at com.sun.tools.javac.code.Types $ 4.visitClassType（Types.java:844）at at com.sun.tools.javac.code.Type $ ClassType.accept（Type.java:786）at at com.sun.tools.javac.code.Types $ DefaultTypeVisitor.visit（Types.java:4571）在com.sun.tools.javac.code.Types.isSubtype（Types.java:840）at com.sun.tools.javac.code.Types.isSubtype（Types.java:804）at com.sun.tools.javac.model.JavacTypes.isSubtype（JavacTypes.java:98）在 org.mapstruct.ap.internal.util.workarounds.SpecificCompilerWorkarounds.isSubtype（SpecificCompilerWorkarounds.java:76）在 org.mapstruct.ap.internal.util.workarounds.TypesDecorator.isSubtype（TypesDecorator.java:68）在 org.mapstruct.ap.internal.model.common.Type.isSubType（Type.java:638）在 org.mapstruct.ap.internal.model.common.Type.isCollection（Type.java:628）在 org.mapstruct.ap.internal.model.common.Type.isCollectionOrMap（Type.java:624）在 org.mapstruct.ap.internal.model.common.Type.getAlternativeTargetAccessors（Type.java:598）在 org.mapstruct.ap.internal.model.common.Type.getPropertyWriteAccessors（Type.java:419）在 org.mapstruct.ap.internal.model.source.TargetReference $ BuilderFromTargetMapping.getTargetEntries（TargetReference.java:144）在 org.mapstruct.ap.internal.model.source.TargetReference $ BuilderFromTargetMapping.build（TargetReference.java:120）在 org.mapstruct.ap.internal.model.source.Mapping.init（Mapping.java:227）在 org.mapstruct.ap.internal.model.source.SourceMethod $ Builder.build（SourceMethod.java:207）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.getMethodRequiringImplementation（MethodRetrievalProcessor.java:257）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.getMethod（MethodRetrievalProcessor.java:193）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.retrieveMethods（MethodRetrievalProcessor.java:148）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.retrieveMethods（MethodRetrievalProcessor.java:163）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.retrieveMethods（MethodRetrievalProcessor.java:163）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.retrieveMethods（MethodRetrievalProcessor.java:163）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.retrieveMethods（MethodRetrievalProcessor.java:163）在 org.mapstruct.ap.internal.processor.MethodRetrievalProcessor.retrieveMethods ...

我的域名类如下

            @Entity
            public class User implements FirstClassDomainObject {
                @Id
                @GeneratedValue(strategy = GenerationType.IDENTITY)
                private long id;
                private String name;
                private String email;
            ...

            @Entity
            public class Exercise implements FirstClassDomainObject {
                @Id
                @GeneratedValue(strategy = GenerationType.IDENTITY)
                private long id;
                private String name;
                private String description;
            ...

            @Entity
            public class WorkoutSet implements FirstClassDomainObject {
                @Id
                @GeneratedValue(strategy = GenerationType.IDENTITY)
                private long id;
                private int repetition;
                private double wight;
                private LocalDateTime timestamp;
                @ManyToOne
                private Exercise exercise;
                @ManyToOne
                private User user;
            ...

我的DTO课程如下

            public class UserResource implements ResourceObject {
                private Long id;
                private String name;
                private String email;
            ...

            public class ExerciseResource implements ResourceObject {
                private String name;
                private String description;
            ...

            public class WorkoutSetResource implements ResourceObject {
                private int repetition;
                private double wight;
                @JsonSerialize(using = LocalDateTimeSerializer.class)
                private LocalDateTime timestamp;
                private ExerciseResource exercise;
                private UserResource user;
            ...

我的mapper界面如下

            @Mapper(componentModel = "spring")
            interface UserMapper extends ClassMapper<User, UserResource> {
                @Override
                default List<Class<?>> getSupportedClasses() {
                    return Lists.newArrayList(User.class, UserResource.class);
                }
            }


            @Mapper(componentModel = "spring")
            interface ExerciseMapper extends ClassMapper<Exercise, ExerciseResource> {
                @Override
                default List<Class<?>> getSupportedClasses() {
                    return Lists.newArrayList(Exercise.class, ExerciseResource.class);
                }
            }

            @Mapper(componentModel = "spring", uses = {UserMapper.class, WorkoutSetMapper.class})
            interface WorkoutSetMapper extends ClassMapper<WorkoutSet, WorkoutSetResource> {
                @Override
                default List<Class<?>> getSupportedClasses() {
                    return Lists.newArrayList(WorkoutSet.class, WorkoutSetResource.class);
                }
            }

ClassMapper定义如下

            public interface ClassMapper<D extends DomainObject, R extends ResourceObject> {
                R map(D domainObject);
                D map(R resourceObject);
                List<Class<?>> getSupportedClasses();
            }

我省略了getter和setter方法以避开文本墙，但可以在此处找到整个代码库https://github.com/tonsV2/Lift-Log-Backend。关于我做错了什么的任何线索？

Answer 1

我发现了错误！我已经将WorkoutSetMapper设置为自己使用。

@Mapper(componentModel = "spring", uses = {UserMapper.class, WorkoutsetMapper.class})
interface WorkoutSetMapper extends ClassMapper<WorkoutSet, WorkoutSetResource> {

虽然我应该有

@Mapper(componentModel = "spring", uses = {UserMapper.class, ExerciseMapper.class})
interface WorkoutSetMapper extends ClassMapper<WorkoutSet, WorkoutSetResource> {

映射处理器中的内部错误：java.lang.StackOverflowError

1 个答案: