我使用Spring 4.1.6.RELEASE和Spring Data Jpa 1.8.0.RELEASE。我在创建org.springframework.data.domain.Pageable bean时遇到问题。它在我的控制器中使用:
@Controller public class ItemsController { @Autowired ProductService itemsService; @RequestMapping(value = "/openItemsPage") public String openItemsPage() { return "items"; } @RequestMapping(value = "/getItems", method = RequestMethod.GET) @ResponseBody public Item[] getItems(Pageable pageable) { return itemsService.getItems(pageable); } }
我的应用程序上下文中还有一个下一个xml配置:
<context:component-scan base-package="com.mobox.controller" /> <mvc:annotation-driven> <mvc:argument-resolvers> <beans:bean id="sortResolver" class="org.springframework.data.web.SortHandlerMethodArgumentResolver" /> <beans:bean class="org.springframework.data.web.PageableHandlerMethodArgumentResolver"> <beans:constructor-arg ref="sortResolver" /> </beans:bean> </mvc:argument-resolvers> </mvc:annotation-driven>
最后,我从客户端执行下一个requsr:
$.ajax({ type: "GET", url: "getProducts?page=0&size=100", .....
在tomcat日志中,我看到下一个:
SEVERE: Servlet.service() for servlet [appServlet] in context with path [/a2delivery-web] threw exception [Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.domain.Pageable]: Specified class is an interface] with root cause org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.domain.Pageable]: Specified class is an interface at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:101) at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:80) at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:106) at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:77) at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:129) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) ....................
请帮助我解决此问题,谢谢!
实现此功能的最简单方法是@EnableSpringDataWebSupport在你的配置中进行设置。或者,在基于XML的纯配置中,声明SpringDataWebConfiguration为Spring bean。
@EnableSpringDataWebSupport
SpringDataWebConfiguration为Spring bean
这将确保必要的东西HandlerMethodArgumentResolver将被正确注册。
HandlerMethodArgumentResolver