應用連接配接池缺少類時報的錯誤

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'datasource' defined in file   Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/apache/commons/pool/impl/GenericObjectPool

 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:883)

 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839)

 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)

 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)

 at java.security.AccessController.doPrivileged(Native Method)

 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)

 at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)

 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)

 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)

 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)

 at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)

 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)

 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)

 at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:140)

 at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:84)

需要最少的maven依賴類

<dependencies>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring</artifactId>

      <version>2.5.6</version>

    </dependency>

<!-- jdbc 驅動類，這裡可以使用适合你的jdbc驅動類 -->

    <dependency>

      <groupId>postgresql</groupId>

      <artifactId>postgresql</artifactId>

      <version>1.0</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring</artifactId>

      <version>2.5.6</version>

    </dependency>

    <dependency>

      <groupId>commons-logging</groupId>

      <artifactId>commons-logging</artifactId>

      <version>1.1.1</version>

    </dependency>

    <dependency>

      <groupId>commons-pool</groupId>

      <artifactId>commons-pool</artifactId>

      <version>1.4</version>

    </dependency>

    <dependency>

      <groupId>commons-dbcp</groupId>

      <artifactId>commons-dbcp</artifactId>

      <version>1.2.2</version>

    </dependency>

  </dependencies>