Question

com/microsoft/sqlserver/jdbc/SQLServerDriver has been compiled。 eclipse连接SQL server数据库时报错

com/microsoft/sqlserver/jdbc/SQLServerDriver has been compiled by a more recent version of the Java Runtime (class file version 54.0), this version of the Java Runtime only recognizes class file versions up to 52.0
SQL server2008的

Answer 1

com.microsoft.sqlserver.jdbc.SQLServerException: 该连接已关闭。出现这种错误一般是connection的唯一性问题。因为唯一，所以你擅自关闭了connection对笑桥象物悔，后面的就没法用了，因此在连接类里面，不要将connection对碰蚂猛象设置为static类型，将其设置为private一般类型即可。

Answer 2

好像是jdk版本过低

Answer 3

这个怎么看是版本问题。 version 54.0， versions up to 52.0