摘要： 项目结构：项目由一个Web Project和多个Java Project构成，Web Project需要引用其它Java Project的类和Jar包。开发时用Eclipse3.5和Tomcat调试时，出现找不到引用的Java Project相关类和Jar包。经过一番摸索，终于调通了。以下是具体调试... 阅读全文

摘要： 整个spring mvc的架构如下图所示：上篇文件讲解了DispatcherServlet通过request获取控制器Controller的过程，现在来讲解DispatcherServletDispatcherServlet的第二步：通过request从Controller获取ModelAndVie... 阅读全文

摘要： In standard SQL, a query that includes aGROUP BYclause cannot refer to nonaggregated columns in the select list that are not named in theGROUP BYclaus... 阅读全文