Spring容器初始化后执行某个指定的方法

冷不防 2022-05-08 05:50 252阅读 0赞

1.配置springmvc.xml

2.配置spring.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans  xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
                http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
                http://www.springframework.org/schema/context
                http://www.springframework.org/schema/context/spring-context-4.0.xsd
                http://www.springframework.org/schema/context
                http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        <bean id="propertyConfigurer"
              class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="locations">
                <list>
                    <value>classpath*:config/db.properties</value>
                </list>
            </property>
        </bean>
    
        
    	<import resource="spring_datasources.xml"/>
    	
    	  
    	<mvc:default-servlet-handler/> 
     
    	
    	<bean
    		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    		<property name="messageConverters">
    			<list>
    				
    				<ref bean="mappingJacksonHttpMessageConverter" />
    			</list>
    		</property>	
    	</bean>
    	<bean
    		class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
    		<property name="messageConverters">
    			<list>
    				<ref bean="mappingJacksonHttpMessageConverter" />
    			</list>
    		</property>
    	</bean>
    
    	<bean id="mappingJacksonHttpMessageConverter"
    		class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
    		<property name="supportedMediaTypes">
    			<list>
    				<bean class="org.springframework.http.MediaType">
    					<constructor-arg index="0" value="text" />
    					<constructor-arg index="1" value="plain" />
    					<constructor-arg index="2" value="UTF-8" />
    				</bean>
    				<bean class="org.springframework.http.MediaType">
    					<constructor-arg index="0" value="*" />
    					<constructor-arg index="1" value="*" />
    					<constructor-arg index="2" value="UTF-8" />
    				</bean>
    				<bean class="org.springframework.http.MediaType">
    					<constructor-arg index="0" value="text" />
    					<constructor-arg index="1" value="*" />
    					<constructor-arg index="2" value="UTF-8" />
    				</bean>
    				<bean class="org.springframework.http.MediaType">
    					<constructor-arg index="0" value="application" />
    					<constructor-arg index="1" value="json" />
    					<constructor-arg index="2" value="UTF-8" />
    				</bean>
    			</list>
    		</property>
    	</bean>
    
    	
    	
    </beans>

3.新建一个controller：ApplicationController

import javax.servlet.ServletContext;
    
    import org.springframework.beans.factory.InitializingBean;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.context.ServletContextAware;
    @Controller
    public class ApplicationController  implements InitializingBean,ServletContextAware{
    
    	@Override
    	public void afterPropertiesSet() throws Exception {
    		System.out.println("-> inited");
    		// 获取所有datasource_instances的数据并且创建线程池
    		
    	}
    	
    	/* Administrator
    	 * @see org.springframework.web.context.ServletContextAware#setServletContext(javax.servlet.ServletContext)
    	 * 可用获得servletcontext
    	 */
    	@Override
    	public void setServletContext(ServletContext servletContext) {
    		// TODO Auto-generated method stub
    //		ServletContext applicationContext = request.getSession().getServletContext();
    	}
    	
    }