[解决方法] spring-data-mongo 配置报错org.springframework.beans.factory.BeanCreationException

照着网上的教程 导入了相应的包，结果报错：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleDaoImpl': 
　　Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: 
　　Error creating bean with name 'mongoTemplate': Failed to introspect bean class [org.springframework.data.mongodb.core.MongoTemplate] for lookup method metadata: 
　　could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/springframework/data/util/CloseableIterator
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:321)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
    at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:140)
    at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:84)
    at tiny.gs.base.AppContext.start(AppContext.java:18)
    at tiny.gs.ServerMain.start(ServerMain.java:14)
    at tiny.gs.ServerMain.main(ServerMain.java:21)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate': Failed to introspect bean class [org.springframework.data.mongodb.core.MongoTemplate] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/springframework/data/util/CloseableIterator
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:269)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1091)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:522)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:496)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:627)
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:169)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:318)
    ... 15 more
Caused by: java.lang.NoClassDefFoundError: org/springframework/data/util/CloseableIterator
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getDeclaredMethods(Unknown Source)
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:613)
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:524)
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:510)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:247)
    ... 29 more
Caused by: java.lang.ClassNotFoundException: org.springframework.data.util.CloseableIterator
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 36 more

观察出错日志，发现MongoTemplate注入factory的时候出错，检查xml发现没有问题，观察上面的红色部分，没有在包中找到 org/springframework/data/util/CloseableIterator，所以应该是版本的问题，更换版本后，问题得以解决，下面是成功后的相应版本：

　　　　　　　<!-- mongodb java driver -->
            <dependency>
                <groupId>org.mongodb</groupId>
                <artifactId>mongo-java-driver</artifactId>
                <version>2.11.0</version>
            </dependency>
            <!-- spring data mongodb -->
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-commons</artifactId>
                <version>1.13.6.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-mongodb</artifactId>
                <version>1.10.4.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-commons-core</artifactId>
                <version>1.4.1.RELEASE</version>
            </dependency>

具体实现如下，欢迎访问：[Java] 游戏服务器搭建 netty+spring+protobuf