我跟着教程写的，为什么执行测试类的时候感觉连不上数据库？
慕码人6223925
2018-05-21 14:12
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!
### The error may exist in file [/Users/cn40258/demo/target/classes/mapper/AreaDao.xml]
### The error may involve com.imooc.demo.dao.AreaDao.queryArea
### The error occurred while executing a query
### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!
6回答
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- 翔仔
- 2018-05-21 23:41:34
同学好，请检查你的数据库版本与驱动的兼容性，建议你使用5.X数据库版本，现在感觉你用了8.0
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- qq_NotoriousIT_0
- 2018-08-16 15:07:01
Connections could not be acquired from the underlying database!
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- qq_浮尘_3
- 2018-06-30 12:32:48
能不能支持我下，帮我解决下，万分感谢，谢谢！
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- qq_浮尘_3
- 2018-06-30 12:31:43
我的mysql版本是5.0.22的驱动试了的是5.0.4以及5.1.34版本的，为什么还是报
Caused by: java.sql.SQLException: No suitable driver
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- nanwenguang
- 2018-06-03 17:09:43
同遇到了这个问题，感谢老师的回答，我导入了8.0的jar包，而我mysql的版本是5.62的应该用5.1的jar包，去官网(https://dev.mysql.com/downloads/connector/j/) 下载的话要点一下边上的 Looking for previous GA versions? 才能下载到5.1的版本。
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- 慕码人6223925
- 2018-05-24 14:43:43
谢谢，问题已解决~
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