Spring MVC 3.1应用程序：AbstractApplicationContext＃refresh在应用程序启动期间多次调用

Question

I have a REST web service built with Spring MVC, with annotation-based configuration and plus a web.xml in which org.springframework.web.context.support.AnnotationConfigWebApplicationContext is specified to be used.

During startup of the application in the log file I see some of the lines 3 times. (Hibernate initialization - SchemaUpdate , TableMetadata etc..., then configWebApplicationContext , then EhCacheManagerFactoryBean , then requestMappingHandlerMapping ... and in this sequence 3 times).

The application starts with no errors and I can use the REST endpoints.

My concern is whether because of this my application will use more memory or cause some unpredicted behavior? Any insight is helpful.

Here's a screenshot of the application start-up captured by Spring Insight:

Answer 1

Ok, as I see, excerpt for the longer startup time, it actually doesn't use more memory, so that's good.

As stated in the JavaDoc API , it loads or refreshes the persistent representation of the configuration.

And @gigadot pointed good in the comment on the question , that I might have multiple dispatcher servlets, and I had two, WebInitializer implements WebApplicationInitializer in onStartup method, and one in web.xml in declaration. I removed the one in the web.xml, and now I had 2 calls to #refresh on startup instead of 3, and the memory consumption was the same.