resengine.java

一个TSH(tapestry+Hibernate+Spring)配置例子

package com.Chang.manage;

import java.util.Locale;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.engine.BaseEngine;
import org.apache.tapestry.request.RequestContext;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

public class ResEngine  extends BaseEngine {

	public static final String APPLICATION_CONTEXT_KEY = "appContext";
	
    //private transient boolean killSession;
    
    //private static final Log log = LogFactory.getLog(ResEngine.class);
    
    
	public ResEngine() {
		//log.info("Create a ResEngine Engine Instance.");
	}

	/**
	 * 通过Spring提供的WebApplicationContextUtils， 将ApplicationContext放置到Tapestry中。
	 */
	protected void setupForRequest(RequestContext context) {
		super.setupForRequest(context);
		//返回Global对象
		Map global = (Map) getGlobal();
		//先通过Global获得ApplicationContext，若为空，则用WebApplicationContextUtils装载
		ApplicationContext ac = (ApplicationContext) global
				.get(APPLICATION_CONTEXT_KEY);

		if (ac == null) {
			//用WebApplicationContextUtils装载ApplicationContext至TapeStry框架中
			ac = WebApplicationContextUtils.getWebApplicationContext(context
					.getServlet().getServletContext());
			//保存至Global全局对象中
			global.put(APPLICATION_CONTEXT_KEY, ac);
		}
		//log.info("now webapplication is initialized....................");


		
		//获取客户端信息
		//this.getClientInfo(context.getRequest());
	}
	
	
	
	/*
	
	protected void cleanupAfterRequest(IRequestCycle cycle) {
		
		super.cleanupAfterRequest(cycle);
	//	System.out.println("--------ResEngine--cleanupAfterRequest-----killSession----------"+killSession);
		if (killSession) {
			try {
				HttpSession session = cycle.getRequestContext().getSession();
		//		System.out.println("--------ResEngine--cleanupAfterRequest-----session----------"+session);
				if (session != null) {
					session.invalidate();
				}
				
			} catch (IllegalStateException ex) {

			}
		}
	}
	
	*/
}