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就Java语言体系来说,设计模式是Java基础知识和J2EE框架知识之间一座隐性的"桥"。会Java的人越来越多,但是一直徘徊在语言层次的程序员不在少数,真正掌握Java中接口或抽象类的应用不是很多,大家经常以那些技术只适合大型项目为由,避开或忽略它们,实际中,Java的接口或抽象类是真正体现Java思想的核心所在,这些你都将在设计模式里领略到它们[...]

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    SQLSTATE[HY000]: General error: 1032 Can't find record in 'mvc_comments'

    Typecho_Db_Query_Exception: SQLSTATE[HY000]: General error: 1032 Can't find record in 'mvc_comments' in /usr/local/springmvc/var/Typecho/Db/Adapter/Pdo.php:105 Stack trace: #0 /usr/local/springmvc/var/Typecho/Db.php(354): Typecho_Db_Adapter_Pdo->query('SELECT mvc_comm...', Object(PDO), 1, 'SELECT') #1 /usr/local/springmvc/var/Typecho/Db.php(384): Typecho_Db->query(Object(Typecho_Db_Query), 1) #2 /usr/local/springmvc/var/Widget/Comments/Recent.php(61): Typecho_Db->fetchAll(Object(Typecho_Db_Query), Array) #3 /usr/local/springmvc/var/Typecho/Widget.php(221): Widget_Comments_Recent->execute() #4 /usr/local/springmvc/usr/themes/pui/sidebar.php(72): Typecho_Widget::widget('Widget_Comments...') #5 /usr/local/springmvc/var/Widget/Archive.php(1937): require('/usr/local/spri...') #6 /usr/local/springmvc/usr/themes/pui/archive.php(64): Widget_Archive->need('sidebar.php') #7 /usr/local/springmvc/var/Widget/Archive.php(2022): require_once('/usr/local/spri...') #8 /usr/local/springmvc/var/Typecho/Router.php(138): Widget_Archive->render() #9 /usr/local/springmvc/index.php(25): Typecho_Router::dispatch() #10 {main}