How to solve NoSuchBeanDefinitionException?

nininch

<listener>
        <listener-class> org.springframework.web.context.ContextLoaderListener <stener-class>
    <stener>
    <listener>
    <listener-class> cn.edu.buaa.iegsa.server.EventInterceptorListener <stener-class>
    <stener>

Use in EventInterceptorListener:
ApplicationContext applicationContext = WebApplicationContextUtils.getRequiredWebApplicationContext (event.getServletContext ());
applicationContext.getBean ("dataSource");

How can I not get javabean? The error that appears is:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dataSource' is defined

89555858

Paste your spring configuration file and see

variolas

Check if the bean with the name dataSource is configured in the spring configuration file.

nininch

Certainly there is no shortage, because when the web server is started, I run the main function in the java file to get ApplicationContext applicationContext=WebApplicationContextUtils.getRequiredWebApplicationContext(event.getServletContext());
applicationContext.getBean("dataSource");

It is normal, the reason may be said: In the web environment, when the EventInterceptorListener runs the above code, the xml configuration file system has not been initialized.

What do you think?

ps0505

There should be a problem in other DAO classes or Service classes!