Specified class is an interface 指定的类是接口

org.springframework.beans.BeanInstantiationException: Failed to instantiate [java.util.List]: Specified class is an interface
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:99)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:139)
at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:82)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:106)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:158)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)atorg.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)atorg.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)atorg.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)atorg.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)atorg.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)atorg.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)atorg.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)atorg.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)atorg.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)atorg.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)atorg.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)atorg.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)atorg.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)atorg.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)atorg.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

解决方式：加上注解