海底的专栏

执行访问DB程序时总报这个错。 Could not open JDBC Connection for transaction; nested exception is org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class ‘’ for connect URL ‘null’ 原因是 server.xml文件配置错了，Context标签是要保住ResourceLink标签的，开始时没包住 &lt

select RowNumber,ColumnNumber,Word from TB_SYNONYM; ■■■■■■■■■■■■■■■■■■■■■■■ SELECT CASE WHEN COLUMNNUMBER = ‘0’ THEN WORD END AS 代, CASE WHEN COLUMNNUMBER = ‘1’ THEN WORD END AS 類1, CASE WHEN COLUMNNU...