小编Ris*_*ngh的帖子

我试图通过扩展 AbstractErrorWebExceptionHandler 来实现我的自定义 GlobalExceptionHandler 类（默认实现是 DefaultErrorWebExceptionHandler 类），但无法这样做，因为缺少构造函数初始化所需的 bean（如下所述）。我不确定为什么默认情况下会发生这种情况实现工作正常，通过提供我自己的实现，它要求一个 bean，请帮忙

@Component
@Order(-2)
public class GlobalExceptionHandler extends AbstractErrorWebExceptionHandler{

    public GlobalExceptionHandler(ErrorAttributes errorAttributes, Resources resources, ApplicationContext applicationContext) {
        super(errorAttributes, resources, applicationContext);
    }

    @Override
    protected RouterFunction<ServerResponse> getRoutingFunction(ErrorAttributes errorAttributes) {
        return RouterFunctions.route(RequestPredicates.all(),this::formatErrorResponse);
    }

    private Mono<ServerResponse> formatErrorResponse(ServerRequest request){
        Map<String, Object> errorAttributesMap = getErrorAttributes(request, ErrorAttributeOptions.defaults());
        int status = (int) Optional.ofNullable(errorAttributesMap.get("status")).orElse(500);
        return ServerResponse
                .status(status)
                .contentType(MediaType.APPLICATION_JSON)
                .body(BodyInserters.fromValue(errorAttributesMap));
    }
}

我得到的错误是：

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 1 of constructor in com.example.userManagementSystem.demoApp.exception.GlobalExceptionHandler required a bean of type 'org.springframework.boot.autoconfigure.web.WebProperties$Resources' that …

设置后

org.gradle.warning.mode=all

在 gradle.properties 中并同步它，下面是日志：

> Task :prepareKotlinBuildScriptModel UP-TO-DATE
The CompileOptions.annotationProcessorGeneratedSourcesDirectory property has been deprecated. 
This is scheduled to be removed in Gradle 8.0.
Please use the generatedSourceOutputDirectory property instead. 
See https://docs.gradle.org/7.3.3/dsl/org.gradle.api.tasks.compile.CompileOptions.html#org.gradle.api.tasks.compile.CompileOptions:annotationProcessorGeneratedSourcesDirectory for more details.
    at org.gradle.api.tasks.compile.CompileOptions.getAnnotationProcessorGeneratedSourcesDirectory(CompileOptions.java:509)
    at org.gradle.api.tasks.compile.CompileOptions_Decorated.getAnnotationProcessorGeneratedSourcesDirectory(Unknown Source)
    at org.jetbrains.plugins.gradle.tooling.builder.AnnotationProcessingModelBuilder.buildAll(AnnotationProcessingModelBuilder.java:73)
    at org.jetbrains.plugins.gradle.tooling.internal.ExtraModelBuilder.buildAll(ExtraModelBuilder.java:111)
    at org.jetbrains.plugins.gradle.tooling.internal.ExtraModelBuilder.buildAll(ExtraModelBuilder.java:78)
    at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuilderWithParameter.build(DefaultToolingModelBuilderRegistry.java:286)
    at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$UserCodeAssigningBuilder.lambda$build$0(DefaultToolingModelBuilderRegistry.java:360)
    at org.gradle.configuration.internal.DefaultUserCodeApplicationContext$CurrentApplication.reapply(DefaultUserCodeApplicationContext.java:109)
    at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$UserCodeAssigningBuilder.build(DefaultToolingModelBuilderRegistry.java:360)
    at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$LockSingleProjectBuilder.lambda$build$0(DefaultToolingModelBuilderRegistry.java:303)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.lambda$withProjectLock$3(DefaultProjectStateRegistry.java:426)
    at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:211)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.withProjectLock(DefaultProjectStateRegistry.java:426)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.fromMutableState(DefaultProjectStateRegistry.java:407)
    at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$LockSingleProjectBuilder.build(DefaultToolingModelBuilderRegistry.java:303)
    at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildOperationWrappingBuilder$1.call(DefaultToolingModelBuilderRegistry.java:338)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
    at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
    at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59) …