java.sql.SQLException:未知的系统变量'tx_isolation'

Question

我正在使用播放框架,我想连接数据库,但我不能,因为我收到以下错误:

play.api.Configuration$$anon$1: Configuration error[Cannot connect to database [default]]
Caused by: play.api.Configuration$$anon$1: Configuration error[Failed to initialize pool: Unknown system variable 'tx_isolation']
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Unknown system variable 'tx_isolation' java.sql.SQLException: Unknown system variable 'tx_isolation

我试图找到tx_isolation,但它不存在:

mysql> show variables like 'tx_isolation';
Empty set (0.00 sec)

那么我能找到什么,怎样才能找到tx_isolation？

---

抱歉.这是我的错误代码.我使用mysql 8.0.11.所以我找到'transaction_isolation'

play.db {
  config = "db"
  default = "default"
}
db {
//TODO : ????
  default.driver = com.mysql.jdbc.Driver
  default.url = "jdbc:mysql://127.0.0.1:3306/testPlayDB"
  default.username = root
  default.password = "321A@654"
}

错误原因Default.url ="jdbc:mysql://127.0.0.1:3306/testPlayDB"

我第一次使用Scala,playframework和StackOverflow ...

谢谢.

Answer 1

如果您使用的是MYSQL8,请尝试show variables like 'transaction_isolation'.Mysql8已重命名tx_isolation为transaction_isolation.

Answer 2

我有同样的问题。我升级了MySql Connector，并解决了我的问题。尝试使用版本8，如下所示：

<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.13</version>
</dependency>