Spring MVC：多模块项目 - 无法将bean定义从一个模块导入到另一个模块

时间：2012-11-27 13:47:03

标签： spring maven servlets spring-mvc applicationcontext

我有一个maven项目，它包含两个maven模块：web模块和持久性模块。 在Web模块上使用Spring MVC。 web.xml中：

    <web-app id="WebApp_ID" version="3.0"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

    <display-name>Web1</display-name>

    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

</web-app>

这是持久性模块上的示例Spring bean配置文件（我简化它以节省时间）：

       <?xml version="1.0" encoding="UTF-8"?>
       <beans xmlns="http://www.springframework.org/schema/beans"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.springframework.org/schema/beans  
             http://www.springframework.org/schema/beans/spring-beans.xsd">
       <bean name="user" class="com.roganin.auto.persistence.User">
       <property name="userName" value="Jack"/>
        </bean>

        </beans>

问题：当我尝试使用以下内容从mvc-dispatcher-servlet.xml导入时：      

无法解决此导入问题。

我收到以下例外情况：

    java.lang.NoClassDefFoundError: com/test/auto/persistence/User
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2442)
    at java.lang.Class.getDeclaredMethods(Class.java:1808)
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:196)
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:178)
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(InitDestroyAnnotationBeanPostProcessor.java:124)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:283)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:830)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:493)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:605)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:472)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$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:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

        Caused by: java.lang.ClassNotFoundException: com.test.auto.persistence.User
    at  
                org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    ... 30 more

And:

    2012-11-27 15:39:50,717 WARN       
    [org.springframework.web.context.support.XmlWebApplicationContext] - <Exception thrown    
    from LifecycleProcessor on context close>
     java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh'     
     before invoking lifecycle methods via the context: Root WebApplicationContext: startup 
     date [Tue Nov 27 15:39:50 EET 2012]; root of context hierarchy
    at org.springframework.context.support.AbstractApplicationContext.getLifecycleProcessor(AbstractApplicationContext.java:353)
    at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1045)
    at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1000)
    at org.springframework.web.context.ContextLoader.closeWebApplicationContext(ContextLoader.java:548)
    at org.springframework.web.context.ContextLoaderListener.contextDestroyed(ContextLoaderListener.java:142)
    at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4831)
    at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5478)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:160)
    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$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

然而，在使用Main方法的简单双模块项目中，它可以很好地工作。

现在我卡住了因为我无法将持久性模块中的任何bean注入Web模块。

搜索了很多。请帮忙。

更新：我的网络模块POM：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.test.auto</groupId>
    <artifactId>AutoSite</artifactId>
    <version>1.0</version>
  </parent>
  <groupId>com.test.auto.web</groupId>
  <artifactId>auto-web</artifactId>
  <version>0.1</version>
  <packaging>war</packaging>

    <properties>
        <spring.version>3.1.3.RELEASE</spring.version>
    </properties>

    <dependencies>

    <dependency>
            <groupId>com.test.auto.persistence</groupId>
            <artifactId>auto-persistence</artifactId>
            <version>0.1</version>
        </dependency>

        <!-- Spring 3 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
        </dependency>
                    <dependency>
    <groupId>maven-taglib</groupId>
    <artifactId>maven-taglib-plugin</artifactId>
    <version>1.4.2</version>
         </dependency>
     </dependencies>
         </project>

-where“auto-web” - 是一个Web模块，“自动持久性”是一个持久性模块。

2 个答案:

答案 0 :(得分：0)

找不到课。您必须指定依赖项。 Web模块依赖于持久性模块，因此它将包含在类路径中。

答案 1 :(得分：0)

这是因为我们没有正确加载配置文件吗？您可以尝试在contextConfigLocation

中的Dispatcher Servlet配置中包含web.xml 
<servlet-name>mvc-dispatcher</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
   <init-param>
     <param-name>contextConfigLocation</param-name>
     <param-value/>
    </init-param>
   <load-on-startup>1</load-on-startup>
 </servlet>
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