DefaultMessageHandlerMethodFactory.java 文件源码

protected List<HandlerMethodArgumentResolver> initArgumentResolvers() {
    List<HandlerMethodArgumentResolver> resolvers = new ArrayList<HandlerMethodArgumentResolver>();
    ConfigurableBeanFactory cbf = (this.beanFactory instanceof ConfigurableBeanFactory ?
            (ConfigurableBeanFactory) this.beanFactory : null);

    // Annotation-based argument resolution
    resolvers.add(new HeaderMethodArgumentResolver(this.conversionService, cbf));
    resolvers.add(new HeadersMethodArgumentResolver());

    // Type-based argument resolution
    resolvers.add(new MessageMethodArgumentResolver());

    if (this.customArgumentResolvers != null) {
        resolvers.addAll(this.customArgumentResolvers);
    }
    resolvers.add(new PayloadArgumentResolver(this.messageConverter, this.validator));

    return resolvers;
}