Java Exception java.lang.AbstractMethodError

Question

How can I solve this exception:

Exception in thread "main" java.lang.AbstractMethodError: com.mysql.jdbc.Connection.isValid(I)Z
    at org.apache.commons.dbcp2.DelegatingConnection.isValid(DelegatingConnection.java:914)
...

I read that this error is something about libraries/ jdk but I can't find a good way to solve it. I need some help from you. Thank you!

Answer 1

这意味着您的mysql jdbc驱动程序未实现jre 6中添加的jdbc方法，例如isValid 。

Answer 2

如果提供验证查询，则可以避免升级驱动程序。

Answer 3

我将JDBC驱动程序jar文件升级到mysql-connector-java-6.0.2，并解决了这个问题。