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第一章的例子跑不通 #67

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keqinyang opened this issue Feb 14, 2019 · 3 comments

keqinyang commented Feb 14, 2019

连接数据库失败了。

org.apache.ibatis.exceptions.PersistenceException:

Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.

The error may exist in tk/mybatis/simple/mapper/CountryMapper.xml

The error may involve tk.mybatis.simple.mapper.CountryMapper.selectAll

The error occurred while executing a query

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.

RyanOrElse commented Feb 21, 2019

应该是mysql-connect-java版本和你本地的mysql版本不一致导致的

Contributor

abel533 commented Mar 2, 2019

数据库版本多少？驱动版本多少？

mhcn commented Mar 6, 2019

1.修改pom文件中mysql-connect-java的版本与数据库版本保持一致；2.mybatis-config.xml中数据库的连接地址改成localhost

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