[PHP知识库]springmvc组件HandlerAdapter源码分析-HttpRequestHandlerAdapter

1.springmvc中HttpRequestHandlerAdapter继承体系

2.概述

HttpRequestHandlerAdapter处理实现了HttpRequestHandler接口的处理器，处理请求直接调用HttpRequestHandler接口的handleRequest方法，它和SimpleControllerHandlerAdapter不同的是SimpleControllerHandlerAdapter返回ModelAndView，而HttpRequestHandlerAdapter没有返回值

?3.HttpRequestHandlerAdapter源码

springmvc组件HandlerAdapter源码-HttpRequestHandlerAdapter_LouD_dm的博客-CSDN博客

4.请求处理

?实现了HandlerAdapter的supports方法，如果处理器是HttpRequestHandler接口的子类进行处理

    @Override
	public boolean supports(Object handler) {
		return (handler instanceof HttpRequestHandler);
	}

实现了HandlerAdapter的handle方法，直接强转HttpRequestHandler接口调用handleRequest方法

    @Override
	@Nullable
	public ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {

		((HttpRequestHandler) handler).handleRequest(request, response);
		return null;
	}

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