WEB项目起动加载的实现方式整理

WEB项目启动加载的实现方式整理
方法一:
实现org.springframework.beans.factory.config.BeanPostProcessor接口:

public class InstantiationTracingBeanPostProcessor implements BeanPostProcessor {          public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {            return bean;      }            public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {            return bean;        }    }

在spring配置文件中添加:

<bean class="***.***.InstantiationTracingBeanPostProcessor"/>

方法二:
实现org.springframework.beans.factory.InitializingBean接口:

public class SysInitBean implements InitializingBean, ServletContextAware {public void afterPropertiesSet() throws Exception {}@Overridepublic void setServletContext(ServletContext servletContext) {}}

在spring配置文件中添加:

<bean class="***.***.SysInitBean"/>

方法三:
实现javax.servlet.ServletContextListener:

public class RedisInitListener implements ServletContextListener {@Overridepublic void contextDestroyed(ServletContextEvent sce) {}@Overridepublic void contextInitialized(ServletContextEvent sce) {//WebApplicationContext wa = WebApplicationContextUtils.getWebApplicationContext(sce.getServletContext());ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");}}

在web.xml中添加listener:

<listener>      <listener-class>***.***.RedisInitListener</listener-class>  </listener> 

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