kettle连接MySql启动报错常见错误解决

• 连接MySql数据库

1. 报错一

Driver class 'org.gjt.mm.mysql.Driver' could not be found, make sure the 'MySQL' driver (jar file) is installed.
 org.gjt.mm.mysql.Driver

报错原因：这个报错的原因是因为当前的kettle目录下没有需要连接的数据库驱动，所以我们需要下载一个驱动放到他的lib包里重新启动即可，我创建的是mysql连接所以需要mysql连接驱动

解决方法：

maven仓库下载合适的启动jar包，我选择的是下载人数最多的

https://mvnrepository.com/artifact/mysql/mysql-connector-java

将下载好的jar解压放到\data-integration\lib\的目录下就可以了

2. 再次进行测试连接，可能会报这样的错误

错误二：

Connection failed. Verify all connection parameters and confirm that the appropriate driver is installed.
Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

错误原因：原因是因为没有选择相应的配置

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解决方法：在选项中新增useSSL=false即可

3. 再次进行测试连接可能还会报这样的错误

Connection failed. Verify all connection parameters and confirm that the appropriate driver is installed.
The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specifc time zone value if you want to utilize time zone support.

解决方案：

设定mysql数据库时区即可或者在kettle数据库连接的选项中配置serverTimezone参数，我使用的是后者。

show variables like '% time_zone%';

set global time_zone = '+8:00';

最后再次测试连接，成功。