Example usage for org.springframework.messaging.handler.invocation InvocableHandlerMethod InvocableHandlerMethod

Introduction

In this page you can find the example usage for org.springframework.messaging.handler.invocation InvocableHandlerMethod InvocableHandlerMethod.

Prototype

public InvocableHandlerMethod(Object bean, Method method) 

Source Link

Document

Create an instance from a bean instance and a method.

Usage

From source file:org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.java

/**
 * Find an {@code @MessageExceptionHandler} method for the given exception.
 * The default implementation searches methods in the class hierarchy of the
 * HandlerMethod first and if not found, it continues searching for additional
 * {@code @MessageExceptionHandler} methods among the configured
 * {@linkplain org.springframework.messaging.handler.MessagingAdviceBean
 * MessagingAdviceBean}, if any.//from w  ww  . j a va  2  s.co  m
 * @param handlerMethod the method where the exception was raised
 * @param exception the raised exception
 * @return a method to handle the exception, or {@code null}
 * @since 4.2
 */
@Nullable
protected InvocableHandlerMethod getExceptionHandlerMethod(HandlerMethod handlerMethod, Exception exception) {
    if (logger.isDebugEnabled()) {
        logger.debug("Searching methods to handle " + exception.getClass().getSimpleName());
    }
    Class<?> beanType = handlerMethod.getBeanType();
    AbstractExceptionHandlerMethodResolver resolver = this.exceptionHandlerCache.get(beanType);
    if (resolver == null) {
        resolver = createExceptionHandlerMethodResolverFor(beanType);
        this.exceptionHandlerCache.put(beanType, resolver);
    }
    Method method = resolver.resolveMethod(exception);
    if (method != null) {
        return new InvocableHandlerMethod(handlerMethod.getBean(), method);
    }
    for (MessagingAdviceBean advice : this.exceptionHandlerAdviceCache.keySet()) {
        if (advice.isApplicableToBeanType(beanType)) {
            resolver = this.exceptionHandlerAdviceCache.get(advice);
            method = resolver.resolveMethod(exception);
            if (method != null) {
                return new InvocableHandlerMethod(advice.resolveBean(), method);
            }
        }
    }
    return null;
}

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