package com.dy.common.webListener;
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import com.dy.common.util.Config;
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import com.dy.common.util.ConfigProperties;
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import jakarta.servlet.ServletContext;
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import jakarta.servlet.ServletContextEvent;
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import jakarta.servlet.ServletContextListener;
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import lombok.extern.slf4j.Slf4j;
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import java.io.InputStream;
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import java.net.URL;
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@Slf4j
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public class ConfigListener implements ServletContextListener {
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//
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public static final String CONFIGFILENAMES = "configFileNames" ;
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@Override
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public void contextInitialized(ServletContextEvent event) {
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ServletContextListener.super.contextInitialized(event);
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ServletContext con = event.getServletContext();
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this.init(con);
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}
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@Override
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public void contextDestroyed(ServletContextEvent event) {
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ServletContextListener.super.contextDestroyed(event);
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}
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/**
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* 解析系统配置
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* @return
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*/
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private boolean init(ServletContext con){
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try {
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InputStream in = this.getClass().getResourceAsStream("/config/config.properties") ;
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if(in == null){
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throw new Exception("未找到配置/config/config.properties属性配置文件名称!") ;
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}
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ConfigProperties.init(in, false);
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String configFileName = con.getInitParameter(CONFIGFILENAMES);
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if(configFileName == null || configFileName.trim().equals("")){
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throw new Exception("未配置config类文件名称!") ;
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}
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String confs[] = configFileName.split(",");
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String conf = null ;
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for(int i = 0 ; i < confs.length ; i++){
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conf = confs[i].trim() ;
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if(conf != null && !conf.equals("")){
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URL configFileURL = null;
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configFileURL = ConfigListener.class.getResource("/config/" + conf);
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if(configFileURL == null){
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configFileURL = ConfigListener.class.getResource("/" + conf);
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}
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Config.getInstance().init(configFileURL) ;
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}
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}
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return true;
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} catch (Exception e) {
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System.out.println("系统启动时，初始化配置出错 !");
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System.out.println(e.getMessage());
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e.printStackTrace();
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return false;
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}
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}
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}
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