spring整合mybatis错误：Could not autowire field: com.kjczwl.ssm.service.ItemsService com.kjczwl.ssm.controller.ItemsController.itemsservice;

　　运行环境：jdk1.7.0_17+tomcat 7 + spring：3.2.0 +mybatis：3.2.7+ eclipse

　　错误：Could not autowire field: com.kjczwl.ssm.service.ItemsService com.kjczwl.ssm.controller.ItemsController.itemsservice; 

　　错误原因：spring的@Autowired 无法注入service的bean（spring+mybatis） 

　　解决办法： 在配置时候，写的mapper扫描注解，并且在接口实现出注解@Service都不能解决问题，在学习群中问了写大神，后面仔细检查了下，发现注解service id和 我的controller 里面注解引用的的不一样，我的service id “itemsService”，controller 　　　　　　　　“itemsservice”,

　　错误代码：

Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@5c620819: defining beans [itemsController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,itemsServiceImpl,mvcContentNegotiationManager,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler#0,org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0,org.springframework.web.servlet.view.InternalResourceViewResolver#0,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@1afd5978
Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemsController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.kjczwl.ssm.service.ItemsService com.kjczwl.ssm.controller.ItemsController.itemsssService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [com.kjczwl.ssm.service.ItemsService] is defined: expected single matching bean but found 2: [itemsServiceImpl, itemsService]
 4     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:288)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1120)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:647)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:598)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:661)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:517)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:458)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)
    at javax.servlet.GenericServlet.init(GenericServlet.java:160)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:722)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.kjczwl.ssm.service.ItemsService com.kjczwl.ssm.controller.ItemsController.itemsssService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [com.kjczwl.ssm.service.ItemsService] is defined: expected single matching bean but found 2: [itemsServiceImpl, itemsService]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285)
    ... 30 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [com.kjczwl.ssm.service.ItemsService] is defined: expected single matching bean but found 2: [itemsServiceImpl, itemsService]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:825)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:730)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:486)
    ... 32 more

　　相关代码：

這是接口实现类

package com.kjczwl.ssm.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.kjczwl.ssm.mapper.ItemsMapperCustom;
import com.kjczwl.ssm.po.ItemsCustom;
import com.kjczwl.ssm.po.ItemsQueryVo;
import com.kjczwl.ssm.service.ItemsService;

/**
     *   商品管理
     * @author 唐烈
     *
     */
@Service
public class ItemsServiceImpl implements ItemsService{
    @Autowired
        ItemsMapperCustom itemsMapperCustom;
    @Override
    public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception {
        //通过ItemsMapperCustom来查询数据库 通过注解自动扫描  所以這里什么都不用写
        return itemsMapperCustom.findItemsList(itemsQueryVo);
    }
    
}

controller类

package com.kjczwl.ssm.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.portlet.ModelAndView;
import com.kjczwl.ssm.po.ItemsCustom;
import com.kjczwl.ssm.service.ItemsService;

/**
 *<p>package:  com.kjczwl.ssm.controller</p>
 *<p>Description:商品的controller(Handler) </p> 
 *<p>Company: Springmvc_Mybits_store</p>
 *@author:         唐烈
 * @date            2017下午5:30:58
 */
@Controller// 注解模式开发Controller
public class ItemsController {
    // 注入 从service 中取得数据
    @Autowired
    ItemsService itemsservice; //错误问题出现這里
    
    //注解扫描， 后面映射地址  可通过queryItems.action 访问
    @RequestMapping("/queryItems")
    public ModelAndView queryItems()throws Exception{
        //得到数据
        List<ItemsCustom> itemsList = itemsssService.findItemsList(null);
        // 构造ModelAndView 
        ModelAndView modelAndView = new ModelAndView();
        // 添加到内存区 外面直接“${} 条件表达式获取”
        modelAndView.addObject("itemsList", itemsList);
        //转发的路径
        modelAndView.setViewName("pages/itemsList");
        
        return modelAndView;
    }
}

applicationContext-service.xml 配置

    <beans
        xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:aop="http://www.springframework.org/schema/aop"
          xsi:schemaLocation="http://www.springframework.org/schema/beans 
                                      http://www.springframework.org/schema/beans/spring-beans.xsd
                                      http://www.springframework.org/schema/context
                                    http://www.springframework.org/schema/context/spring-context-3.2.xsd
                                    http://www.springframework.org/schema/mvc
                                    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
                                    http://www.springframework.org/schema/tx
                                    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
                                    http://www.springframectivework.org/schema/aop
                                    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">
    <!-- 商品管理的service -->
    <bean id="itemsService" class="com.kjczwl.ssm.service.impl.ItemsServiceImpl"/>
</beans>