Unknown system variable 'tx_isolation'] with root cause

墨蓝 2023-10-18 15:41 227阅读 0赞

场景

Spring Boot项目启动后运行提示:

![Image 1][]watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70

详细如下:

  1. ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Unknown system variable 'tx_isolation'] with root cause
  2. java.sql.SQLException: Unknown system variable 'tx_isolation'
  3. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055) ~[mysql-connector-java-5.1.6.jar:na]
  4. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) ~[mysql-connector-java-5.1.6.jar:na]
  5. at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491) ~[mysql-connector-java-5.1.6.jar:na]
  6. at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423) ~[mysql-connector-java-5.1.6.jar:na]
  7. at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936) ~[mysql-connector-java-5.1.6.jar:na]
  8. at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060) ~[mysql-connector-java-5.1.6.jar:na]
  9. at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536) ~[mysql-connector-java-5.1.6.jar:na]
  10. at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465) ~[mysql-connector-java-5.1.6.jar:na]
  11. at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1383) ~[mysql-connector-java-5.1.6.jar:na]
  12. at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3117) ~[mysql-connector-java-5.1.6.jar:na]
  13. at com.zaxxer.hikari.pool.PoolBase.checkDriverSupport(PoolBase.java:466) ~[HikariCP-3.2.0.jar:na]
  14. at com.zaxxer.hikari.pool.PoolBase.setupConnection(PoolBase.java:421) ~[HikariCP-3.2.0.jar:na]
  15. at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:374) ~[HikariCP-3.2.0.jar:na]
  16. at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar:na]
  17. at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) ~[HikariCP-3.2.0.jar:na]
  18. at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) ~[HikariCP-3.2.0.jar:na]
  19. at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.2.0.jar:na]
  20. at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~

解决

找到pom.xml中mysql驱动的版本,升级即可。这里是5.1.6将其版本改高点即可。

![Image 1][]watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1

[Image 1]:

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