问题:使用QSqlDataBase类建立连接MySql数据库驱动加载失败 QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QOCI8 QOCI QODBC3 QODBC QSqlDatabasePrivate::removeDatabase: connection 'qt_sql_default_connection' is still in use, all queries will…
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:) at java.lang.Class.forName0(…