相关疑难解决方法(0)

我正在使用Spring MVC 3.1.0M2并尝试将我的配置移动到java bean.但我遇到以下错误:

2011-09-14 18:43:42.301:警告:/:不可用org.springframework.beans.factory.BeanCreationException:创建名为'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration#0'的bean时出错:注入自动连接的依赖项失败; 嵌套异常是org.springframework.beans.factory.BeanCreationException:无法自动装配方法:void org.springframework.transaction.annotation.AbstractTransactionManagementConfiguration.setConfigurers(java.util.Collection); 嵌套异常是org.springframework.beans.factory.BeanCreationException:在类ru.mystamps.web.config.DbConfig中定义名为'entityManagerFactory'的bean时出错:bean的实例化失败; 嵌套异常是org.springframework.beans.factory.BeanDefinitionStoreException:工厂方法[public org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean ru.mystamps.web.config.DbConfig.entityManagerFactory()]引发异常; 嵌套异常是java.lang.IllegalArgumentException:DataSource不能为null

映射来自web.xml:

<context-param>
    <param-name>spring.profiles.default</param-name>
    <param-value>dev</param-value>
</context-param>

<servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>
        org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
        <param-name>contextClass</param-name>
        <param-value>
            org.springframework.web.context.support.AnnotationConfigWebApplicationContext
        </param-value>
    </init-param>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            ru.mystamps.web.config.MvcConfig,
            ru.mystamps.web.config.DbConfig
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

DbConfig.java:

@Configuration
@EnableTransactionManagement
@ImportResource("classpath:spring/datasource.xml")
public class DbConfig {

    @Autowired
    private DataSource dataSource;

    @Bean
    public JpaVendorAdapter jpaVendorAdapter() {
        final HibernateJpaVendorAdapter jpaVendorAdapter =
            new HibernateJpaVendorAdapter();

        jpaVendorAdapter.setDatabasePlatform(dialectClassName);
        jpaVendorAdapter.setShowSql(showSql);

        return jpaVendorAdapter;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        final LocalContainerEntityManagerFactoryBean entityManagerFactory =
            new LocalContainerEntityManagerFactoryBean(); …