关于spring mvc的No adapter for handler异常

Posted 2022-03-14 滴滴哒滴哒

使用非注解的方式SimpleControllerHandlerAdapter，构造controller，报错

javax.servlet.ServletException: No adapter for handler [cn.com.mvc.controller.FruitsControllerTest@5d99eab6]: The DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler
	org.springframework.web.servlet.DispatcherServlet.getHandlerAdapter(DispatcherServlet.java:1162)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

 

需要在springmvc的xml配置文件中设置

 <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

并且SampleController需要去实现

org.springframework.web.servlet.mvc.Controller

并且重写handleRequest这个方法去响应请求