initjaosolistener.java

来自「Jaoso新闻文章发布系统 0.9.1final 程序架构: Struts」· Java 代码 · 共 79 行

package jaoso.framework.web.listener;

import jaoso.framework.exception.BusinessException;

import jaoso.framework.service.SecurityService;
import jaoso.framework.service.ServiceLocator;
import jaoso.framework.service.SetupService;

import jaoso.framework.util.JaosoConfig;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.context.ApplicationContext;

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

import java.io.File;

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


/**
 * @author Edgeloner [e-mail]
 * @since 2004-12-16
 */
public class InitJaosoListener implements ServletContextListener {
    private static Log log = LogFactory.getLog(InitJaosoListener.class);
    private ServletContext servletContext;

    /**
     * (non-Javadoc)
     * @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
     */
    public void contextDestroyed(ServletContextEvent arg0) {
    }

    /**
     * (non-Javadoc)
     * @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
     */
    public void contextInitialized(ServletContextEvent event) {
        log.info("********* Initialized Jaoso now *********************");
        servletContext = event.getServletContext();
        initContext();
        initRootPath();
        setupIfNecessary();
        initSecurity();
        log.info("********* Initialized Jaoso success *********************");
    }

    private void initContext() {
        ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext);
        ServiceLocator.getInstance().setContext(ctx);
    }

    private void initRootPath() {
        String rootPath = servletContext.getRealPath("/");
        rootPath = rootPath.endsWith(File.separator) ? rootPath
                                                     : (rootPath +
            File.separator);
        ((JaosoConfig) ServiceLocator.getInstance().getService("jaosoConfig")).setRootPath(rootPath);
    }

    private void initSecurity() {
        try {
            ((SecurityService) ServiceLocator.getInstance().getService("securityService")).initSecurity();
        } catch (BusinessException e) {
            log.error("starting spring error: ", e);
        }
    }

    private void setupIfNecessary() {
        ((SetupService) ServiceLocator.getInstance().getService("setupService")).install();
    }
}