mysql-使用druid连接池连接数据库，出现了以下问题，忘各位大神解答
- WBOYOriginal
- 2016-06-06 09:42:181636browse
mysql异常
com.mysql.jdbc.exceptions.jorg.apache.ibatis.exceptions.PersistenceException:
Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 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.
Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 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.
请各位大神帮帮小弟我，这是出现什么问题
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：mysql-刚学JAVA，求个MySQL使用线程池插入表的例子Next article：mysql-如何获取一年里每个月的记录总数，要求不管该月有没有数据都要显示，没有的显示为0？