Spring 创建名为'；数据源'；在ServletContext资源中定义

我正在从事struts2演示项目和spring来管理Hibernate会话

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错误

  SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NoSuchFieldError: NULL
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$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:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NoSuchFieldError: NULL
    at org.springframework.expression.TypedValue.<clinit>(TypedValue.java:32)
    at org.springframework.expression.spel.support.StandardEvaluationContext.setRootObject(StandardEvaluationContext.java:85)
    at org.springframework.expression.spel.support.StandardEvaluationContext.<init>(StandardEvaluationContext.java:74)
    at org.springframework.context.expression.StandardBeanExpressionResolver.evaluate(StandardBeanExpressionResolver.java:124)
    at org.springframework.beans.factory.support.AbstractBeanFactory.evaluateBeanDefinitionString(AbstractBeanFactory.java:1299)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.evaluate(BeanDefinitionValueResolver.java:210)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:182)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1360)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    ... 21 more
Sep 24, 2012 7:22:18 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart
Sep 24, 2012 7:22:18 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/1-Struts2_CRUD] startup failed due to previous errors
Sep 24, 2012 7:22:18 AM org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
Sep 24, 2012 7:22:18 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/1-Struts2_CRUD] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Sep 24, 2012 7:22:18 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/1-Struts2_CRUD] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak.

maven

<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>

        <!-- javaee-api 6 dependencies -->
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- Spring framework dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-spring-plugin</artifactId>
            <version>2.3.4.1</version>
        </dependency>

        <!-- struts2 dependencies -->
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>2.3.4.1</version>
        </dependency>

        <!-- sl4j dependencies -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>

        <!-- Hibernate dependencies -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.core.version}</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.0.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>${hibernate.core.version}</version>
        </dependency>

        <!-- JDBC dependencies -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.21</version>
        </dependency>

    </dependencies>

朱尼特
朱尼特
4.10
爪哇
JavaEEAPI
6
假如
org.springframework
春季甲虫
3.1.2.1发布
org.apache.struts
struts2弹簧插件
2.3.4.1
org.apache.struts
struts2型芯
2.3.4.1
log4j
log4j
1.2.17
org.slf4j
slf4j api
${slf4j.version}
org.slf4j
slf4j-log4j12
${slf4j.version}
org.hibernate
冬眠核心
${hibernate.core.version}
org.hibernate
休眠验证器
4.3.0.1最终版本
org.hibernate
hibernate-c3p0
${hibernate.core.version}
mysql
mysql连接器java
5.1.21

类路径中JAR文件的不兼容版本似乎有问题，例如Spring可能需要一些更低或更高版本的hibernate<代码>hibernate.core.version-这将非常有用。尝试改用Hibernate3，我敢打赌这是Hibernate4及其Spring支持的问题。

我无法提供解决方案，但由于我没有足够的分数，因此无法发表评论，我可以向您提供我获得的信息，希望您也能找到解决方案

当我试图运行一个示例项目时，我遇到了相同的错误。我正在运行Hibernate 3.2.0.ga、Maven 2、Spring 3.2.0和Tomcat 7。我得到了确切的错误。我下载了源文件，暂停并在调试时运行Tomcat。据我所知。当它试图获取注册的作用域时，我得到了错误。bean传递的是“singleton”，当它查找该作用域时，返回null，我得到了您描述的错误

一、 为了理智起见，在我所有的bean中添加了“session”，我得到了一个不同的错误

java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
    at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131)
    ...

我希望这能让你走上正确的轨道来解决这个问题，因为我也很想找到解决办法。设置项目和项目基础设施是我的弱点，所以这对我来说总是一个难题

编辑： 果然，这很可能是库版本冲突。在我的项目中，我最初试图使用最新的Spring和Hibernate 3，但我发现了错误。我用谷歌搜索了一个又一个版本，以找出哪些版本彼此兼容，并在一个Hibernate论坛上找到了一条旧评论，其中显示Spring3.0.0.RELEASE将与Hibernate3.4.0.GA配合使用。我计划对每个工具进行更新，直到我能够获得这两个工具的最新兼容版本

有人在评论中这样说

你只需在图书馆里玩一玩，直到找到一些 兼容的。这难道不是作为一名开发人员的乐趣之一吗

---

。。。我真希望那家伙是在开玩笑

您应该将mysql-connector-java-5.1.26-bin.jar添加到WEB-INF/lib中。我遇到了和你一样的问题。它会起作用。

您需要转到堆栈跟踪的底部，该跟踪实际上包含一些可能触发故障的错误。你能发布整个堆栈跟踪吗？@vikdor，我已经添加了完整的堆栈跟踪。如果需要，请帮忙possible@vikdor，我也认为这可能是Jar的问题，但无法找到完整的版本。我是javaee新手，但很努力。我采用了Maven，并认为我的依赖性问题将得到解决，但我仍然看到jar不稳定，这是非常恼人的。你们是怎么找到合适的罐子的？有时候只是试验而已，Maven对这个问题没有帮助。当您尝试使用最新的LIB时，这个问题经常出现，因为其他LIB可能赶不上同样的速度。

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/struts2_demo_db</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">786</property>
        <property name="hibernate.connection.pool_size">1</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>

        <!-- Echo all executed SQL to stdout for debugging -->
        <property name="show_sql">true</property>
        <property name="hbm2ddl.auto">update</property>


        <property name="hibernate.connection.provider_class">org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider</property>
        <property name="hibernate.c3p0.max_size">100</property>
        <property name="hibernate.c3p0.min_size">1</property>
        <property name="hibernate.c3p0.idle_test_period">30</property>

        <mapping class="com.pirzada.domain.User"/>
        <!-- DB schema will be updated if needed -->
        <!-- <property name="hbm2ddl.auto">update</property> -->
    </session-factory>
</hibernate-configuration>

/*@Transactional is needed so that a Hibernate transaction is set up, otherwise updates won't have an affect*/
@Transactional
public class UserDAOImpl implements UserDAO {

    // So Spring can inject the session factory
    protected SessionFactory sessionFactory;
    public void setSessionFactory(SessionFactory value) {
        sessionFactory = value;
    }

    // Shortcut for sessionFactory.getCurrentSession()
    protected Session session() {
        return sessionFactory.getCurrentSession();
    }

    @Override
    public void saveOrUpdateUser(User user) {
        session().saveOrUpdate(user);
    }
}

<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>

        <!-- javaee-api 6 dependencies -->
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- Spring framework dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-spring-plugin</artifactId>
            <version>2.3.4.1</version>
        </dependency>

        <!-- struts2 dependencies -->
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>2.3.4.1</version>
        </dependency>

        <!-- sl4j dependencies -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>

        <!-- Hibernate dependencies -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.core.version}</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.0.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>${hibernate.core.version}</version>
        </dependency>

        <!-- JDBC dependencies -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.21</version>
        </dependency>

    </dependencies>

java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
    at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131)
    ...