CallmeMaybe

1.懒汉模式+synchronized package cn.bdqn.util; import java.io.IOException; import java.io.InputStream; import java.util.Properties; //读取配置文件工具类--单例模式（有且仅有一个实例） public class ConfigManager { //读取配置文件Prop...

编写BaseServlet，重写service方法时发现： protected void service(HttpServletRequest req, HttpServletResponse resp) req.getClass():class org.apache.catalina.connector.RequestFacade HttpServletRequest.class:interf...