Spring no adapter for Handler exception

In the spring MVC framework, when using the @ controller annotation to implement controller and other different types of controllers (such as controllers inherited from the Controller), you usually need to configure the adapter.

1. When using and inheriting simpleformcontroller as the controller (public class logincontroller extends simpleformcontroller), you need to configure

<Bean class = "org. springframework. Web. servlet. MVC. simplecontrollerhandleradapter"/> otherwise, an exception similar to the following occurs:

javax.servlet.ServletException: No adapter for handler [com.test.spring.mvc.contoller.LoginController@c6e1ec]: Does your handler implement a supported interface like Controller?org.springframework.web.servlet.DispatcherServlet.getHandlerAdapter(DispatcherServlet.java:982)org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:770)org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)javax.servlet.http.HttpServlet.service(HttpServlet.java:621)javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

2. When using the HTTP service provided by httpinvokerserviceexporter, you must configure it in the-servlet. xml file.

<Bean class = "org. springframework. Web. servlet. MVC. httprequesthandleradapter"/> otherwise, an exception similar to the following occurs:

javax.servlet.ServletException: No adapter for handler [org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter@45378f]: Does your handler implement a supported interface like Controller?org.springframework.web.servlet.DispatcherServlet.getHandlerAdapter(DispatcherServlet.java:982)org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:770)org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)javax.servlet.http.HttpServlet.service(HttpServlet.java:621)javax.servlet.http.HttpServlet.service(HttpServlet.java:722)