applicationcontextfactory.java

struts+spring+hibernate自创框架

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package com.pegasus.framework.web;

import javax.servlet.ServletContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

/**
 * $$Id: ApplicationContextFactory.java,v 1.1 2007/10/15 01:36:14 forever Exp $$
 * Title: ${Name}
 * <p/>
 * Copyright: Copyright (c) 2005
 * <p/>
 * 应用上下文工厂类，负责初始化应用上下文，
 * <p/>
 * Date: 2007-1-29
 * Time: 17:02:41
 */
public final class ApplicationContextFactory {
	protected static final Log logger = LogFactory.getLog(ApplicationContextFactory.class);
    private static ApplicationContext applicationContext;
    private static final String CONFIG_PREFIX = "applicationContext";
    private static final String CONFIG_SUFFIX = ".xml";
    private static final String CONFIG_PATH = "config/";
    /**
     * .
     */
    private ApplicationContextFactory() {
    }

    /**
     * 得到应用上下文，如果上下文为空则初始化。，
     *
     * @return .
     */
    public static ApplicationContext getApplicationContext() {
        if (applicationContext == null)
            applicationContext = initContext();
        return applicationContext;
    }

    /**
     * @param servletContext .
     */
    public static void initContext(ServletContext servletContext) {
        applicationContext = WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext);
    }

    /**
     * 初始化向下文，依据配置文件初始化。
     *
     * @return .
     */
    private static ApplicationContext initContext() {
    	System.out.println("initialize application context...");
    	System.out.println("spring config file is initializing...");
        String[] paths = {"classpath*:/" + CONFIG_PATH + CONFIG_PREFIX + "*" + CONFIG_SUFFIX};
        return new ClassPathXmlApplicationContext(paths);
    }
    
    public static void main(String args[]) {
    	initContext();
    }

}