import org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver; //导入依赖的package包/类
@Override
protected void configureHandlerExceptionResolvers(
		List<HandlerExceptionResolver> exceptionResolvers) {
	super.configureHandlerExceptionResolvers(exceptionResolvers);
	if (exceptionResolvers.isEmpty()) {
		addDefaultHandlerExceptionResolvers(exceptionResolvers);
	}
	if (this.mvcProperties.isLogResolvedException()) {
		for (HandlerExceptionResolver resolver : exceptionResolvers) {
			if (resolver instanceof AbstractHandlerExceptionResolver) {
				((AbstractHandlerExceptionResolver) resolver)
						.setWarnLogCategory(resolver.getClass().getName());
			}
		}
	}
}