写一个监听去初始化Spring管理的bean

写一个监听去初始化Spring管理的bean


package com.kettas.haofeng.test;

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

public class Test <T> extends ClassA <T> implements Serializable{

public static void main(String[] args) {
System.out.println("==============getSuperClass=====================");
System.out.println(Test.class.getSuperclass().getName());

System.out.println("====================getGenericSuperClass=============");
Type type=Test.class.getGenericSuperclass();

System.out.println(type);
if(ParameterizedType.class.isAssignableFrom(type.getClass())){
System.out.println("------------->getActualTypeArguments:");
for(Type t1:((ParameterizedType)type).getActualTypeArguments()){
System.out.println(t1+",");
}
System.out.println();
}

}

}



package
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import com.kettas.upp.background.biz.ProductBiz;

public class SysListener implements ServletContextListener {

public void contextDestroyed(ServletContextEvent ent) {
// TODO Auto-generated method stub

}

public void contextInitialized(ServletContextEvent ent) {
   
WebApplicationContext wa=
WebApplicationContextUtils.getRequiredWebApplicationContext(ent.getServletContext());  
ProductBiz productBiz=(ProductBiz) wa.getBean("productBiz");
    
int count=productBiz.findCount();

System.out.println("====================");
System.out.println("==============="+count+"====================");
System.out.println("====================");

}

}



把写的这个监听配置到web.xml文件中去

<listener> 
        <listener-class> 
            org.springframework.web.context.ContextLoaderListener  
        </listener-class> 
    </listener> 
 
    <listener> 
        <listener-class> 
            com.xxx.xxx.SysListener  
        </listener-class> 
    </listener>