无法实例化Pageable bean
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:
@Controllerpublic 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 causeorg.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!
回答:
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
。
这将确保必要的东西HandlerMethodArgumentResolver
将被正确注册。
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