Controller的@RequestMapping拼接父类Controller@RequestMapping的Path

import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.lang.Nullable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.condition.RequestCondition;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;

import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;


public class RequestMappingHandlerMappingWrapping extends RequestMappingHandlerMapping {

    @Override
    protected RequestMappingInfo getMappingForMethod(Method method, Class handlerType) {
        RequestMappingInfo mappingInfo = super.getMappingForMethod(method, handlerType);
        Class superClass = handlerType.getSuperclass();
        mappingInfo = appendSuperRequestMapping(superClass,mappingInfo);
        return mappingInfo;
    }

    
    protected RequestMappingInfo appendSuperRequestMapping(Class handlerType,RequestMappingInfo mappingInfo) {
        if(handlerType == null || mappingInfo == null) {
            return mappingInfo;
        }
        RequestMapping superRequestMapping = handlerType.getAnnotation(RequestMapping.class);
        if(superRequestMapping != null && superRequestMapping.value().length > 0) {
            RequestMappingInfo typeInfo = this.createRequestMappingInfo(handlerType);
            if (typeInfo != null) {
                mappingInfo = typeInfo.combine(mappingInfo);
            }
        }
        return appendSuperRequestMapping(handlerType.getSuperclass(),mappingInfo);
    }

    @Nullable
    private RequestMappingInfo createRequestMappingInfo(AnnotatedElement element) {
        RequestMapping requestMapping = (RequestMapping) AnnotatedElementUtils.findMergedAnnotation(element, RequestMapping.class);
        RequestCondition condition = element instanceof Class ? this.getCustomTypeCondition((Class)element) : this.getCustomMethodCondition((Method)element);
        return requestMapping != null ? this.createRequestMappingInfo(requestMapping, condition) : null;
    }

}

import org.springframework.boot.autoconfigure.web.servlet.WebMvcRegistrations;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;



@Configuration
@Order(Ordered.HIGHEST_PRECEDENCE)
public class WebMvcConfiguration implements WebMvcRegistrations {

    @Override
    public RequestMappingHandlerMapping getRequestMappingHandlerMapping() {
        return new RequestMappingHandlerMappingWrapping();
    }

}