java连接MySQL ClassNotFoundExcepti

Eclipse里运行时，将mysql-connector-java-x.x.x-bin.jar添加到外部JAR，具体操作是：在工程目录右键->Build Path->Configure Build Path->Add External JARs

Linux平台下，用JAR包运行程序时，将mysql-connector-java-x.x.x-bin.jar放到java安装目录下的jre\lib\ext