背景知识:
我有一个运行在Tomcat 7上的Java 1.6 web应用程序。数据库为MySQL 5.5。之前,我使用Mysql JDBC驱动程序5.1.23连接到DB。一切工作。我最近升级到Mysql JDBC驱动程序5.1.33。升级后,Tomcat在启动应用程序时会抛出这个错误。
WARNING: Unexpected exception resolving reference
java.sql.SQLException: The server timezone value 'UTC' is unrecognized or represents
more than one timezone. You must configure either the server or JDBC driver (via
the serverTimezone configuration property) to use a more specifc timezone value if
you want to utilize timezone support.
为什么会这样?
连接字符串为我工作这个
jdbc: mysql: / / localhost / < yourDbName > ?useUnicode = true&useJDBCCompliantTimezoneShift = true&useLegacyDatetimeCode = false&serverTimezone = UTC
我使用Gradle我的构建。Gradle文件是这样的
dependencies {
// https://mvnrepository.com/artifact/mysql/mysql-connector-java
implementation group: 'mysql', name: 'mysql-connector-java', version: '8.0.17'
testCompile group: 'junit', name: 'junit', version: '4.12'
}
my.ini
最后加上这一行:
default-time-zone = '+05:30'
从终端运行此命令
>> sudo mysql -e "SET GLOBAL time_zone = ‘+5:30’;" -u root
>> sudo mysql -e "SELECT @@global.time_zone;" -u root
如果两者都不工作,请尝试使用终端从sqoop使用此请求
>> sqoop list-databases --connect "jdbc:mysql://localhost/employees?serverTimezone=UTC" --username sqoop -P
或者你可以用这个替换你的请求URL
jdbc:mysql://localhost/employees?serverTimezone=UTC