无法实例化Pageable bean [英] Failed to instantiate Pageable bean

问题描述

我使用Spring 4.1.6.RELEASE和Spring Data Jpa 1.8.0.RELEASE。我在org.springframework.data.domain.Pageable bean创建时遇到问题。
它在我的控制器中使用：

I use Spring 4.1.6.RELEASE and Spring Data Jpa 1.8.0.RELEASE. I have a problem with org.springframework.data.domain.Pageable bean creation. It is used in my controller:

@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下一个xml配置：

Also I have a next xml configurations in my application context:

<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>

最后我从客户那里做下一次requsr：

And finaly I do A next requsr from the client:

   $.ajax({
        type: "GET",
        url: "getProducts?page=0&size=100",
        .....

在tomcat日志中我看到下一个：

In tomcat log I see next:

    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)
    ....................

请帮我解决这个问题，谢谢！

Please help me to resolve this issue, thanks!

推荐答案

最简单的方法是在配置中设置 @EnableSpringDataWebSupport 。或者，在基于纯XML的配置中，将 SpringDataWebConfiguration 声明为Spring bean。

The easiest way to get this working is to set @EnableSpringDataWebSupport in your configuration. Alternatively, in a pure XML based configuration, declare SpringDataWebConfiguration as Spring bean.

这将确保必要的 HandlerMethodArgumentResolver 将被正确注册。

That will make sure the necessary HandlerMethodArgumentResolver will be registered correctly.

这篇关于无法实例化Pageable bean的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！