扩展ContextLoaderListener类,在WEB 系统启动时将ApplicationContext单例压人BeanFactory中

package net.gbicc.x27.util.web;

import net.gbicc.BpmConfig;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class NeqBeanFactory {
    private static final BpmConfig config = BpmConfig.getInstance();
	private static final String clientSite = config.getClientSite();
	private ApplicationContext context = null;

	private static NeqBeanFactory inst = new NeqBeanFactory();

	private NeqBeanFactory() {
	};

	public static NeqBeanFactory getInstance() {
		return inst;
	}

	public synchronized void setContext(ApplicationContext context) {
		this.context = context;
	}

	public synchronized ApplicationContext getContext() {
		if (context == null) {
			bulidContext();
		}
		return context;
	}

	/**
	 * 根据beanId 获取Bean
	 * 
	 * @param beanId
	 * @return
	 */
	public synchronized Object getBean(String beanId) {
		if (context == null) {
			bulidContext();
			System.out.println("NeqBeanFactory===bulidContext===beanId="+beanId);
		}
		System.out.println("NeqBeanFactory====NOT_bulidContext===beanId="+beanId);
		return context.getBean(beanId);
	}

	public synchronized void bulidContext() {
		
		    String[] contextRef = new String[1];
	        if ("internal".equals(clientSite)){
	            contextRef = new String[] { "classpath:spring-context-internal.xml" };
	        } else {
	            contextRef = new String[] { "classpath:spring-context-external.xml" };
	        }
	        if (context == null){
	        	context = new ClassPathXmlApplicationContext(contextRef);
	        }
	}

}

 

 

 

package net.gbicc.x27.util.web;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;

import org.springframework.context.ApplicationContext;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.WebApplicationContextUtils;
/**
 * 扩展ContextLoaderListener类
 * 在WEB 系统启动时将ApplicationContext单例压人BeanFactory中
 * @author BPM05
 *
 */

public class NeqContextLoaderListener extends ContextLoaderListener {
	
	public  void contextInitialized(ServletContextEvent event){
		try {
			super.contextInitialized(event);
		} catch (Exception e) {
			e.printStackTrace();
		}
		System.out.println("=========================NeqContextLoaderListener");
		ServletContext  context = event.getServletContext();
		ApplicationContext ctx=WebApplicationContextUtils.getRequiredWebApplicationContext(context);
		NeqBeanFactory.getInstance().setContext(ctx);
	}

}