SpringAppContext单例调用服务类

/**
* action 中的使用
*/
public ActionForward query(ActionMapping mapping, ActionForm actionForm,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		CsbCpxzForm myForm = (CsbCpxzForm) actionForm;
		CsbCpxzService serv = (CsbCpxzService) SpringAppContext
				.getBean(CsbCpxzService.KEY,request);
}

/**
 * 
 */
package com.example.spring;

import javax.servlet.http.HttpServletRequest;

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



public class SpringAppContext {
	
	private static ApplicationContext instance;
	private static String[] minorConfig={ 
		};

	
	static public Object getBean(String beanId, HttpServletRequest request){ 
		ApplicationContext app = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getSession().getServletContext()); 
		return app.getBean(beanId);
	}

	
	private SpringAppContext() {
	
	}

	
	static public ApplicationContext getInstance() {
		if (instance == null) {
			instance =  new ClassPathXmlApplicationContext(minorConfig);
		}
		return instance;
	}
}