seata配置mysql数据库信息导致启动失败

失败原因分析

搭建环境:jdk11,nacos1.4.1,mysql8.0.31
在nacos中配置的数据库连接信息seataServer.properties:

# 数据存储方式，db代表数据库
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.cj.jdbc.Driver
store.db.url=jdbc:mysql://localhost:3306/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=root
store.db.password=root
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000
# 事务、日志等配置
server.recovery.committingRetryPeriod=1000
server.recovery.asynCommittingRetryPeriod=1000
server.recovery.rollbackingRetryPeriod=1000
server.recovery.timeoutRetryPeriod=1000
server.maxCommitRetryTimeout=-1
server.maxRollbackRetryTimeout=-1
server.rollbackRetryTimeoutUnlockEnable=false
server.undo.logSaveDays=7
server.undo.logDeletePeriod=86400000

# 客户端与服务端传输方式
transport.serialization=seata
transport.compressor=none
# 关闭metrics功能，提高性能
metrics.enabled=false
metrics.registryType=compact
metrics.exporterList=prometheus
metrics.exporterPrometheusPort=9898

启动seata-server.bat,报错数据库连接创建失败,具体信息如下:

18:17:00.367 ERROR --- [                     main] com.alibaba.druid.pool.DruidDataSource   : init datasource error, url: jdbc:mysql://localhost:3306/seata?useUnicode=true&rewriteBatchedStatements=true
==>
java.sql.SQLException: The server time zone value '锟叫癸拷锟斤拷准时锟斤拷' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specifc time zone value if you want to utilize time zone support.
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[na:na]
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[na:na]
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) ~[na:na]
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) ~[na:na]
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) ~[na:na]
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:76) ~[na:na]
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836) ~[na:na]
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~[na:na]
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246) ~[na:na]
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197) ~[na:na]
        at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1644) ~[druid-1.1.23.jar:1.1.23]
        at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710) ~[druid-1.1.23.jar:1.1.23]
        at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:912) ~[druid-1.1.23.jar:1.1.23]
        at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1378) ~[druid-1.1.23.jar:1.1.23]
        at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1374) ~[druid-1.1.23.jar:1.1.23]
        at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98) ~[druid-1.1.23.jar:1.1.23]
        at io.seata.server.storage.db.store.LogStoreDataBaseDAO.queryTableStructure(LogStoreDataBaseDAO.java:461) ~[seata-server-1.4.2.jar:na]
        at io.seata.server.storage.db.store.LogStoreDataBaseDAO.initTransactionNameSize(LogStoreDataBaseDAO.java:445) ~[seata-server-1.4.2.jar:na]
        at io.seata.server.storage.db.store.LogStoreDataBaseDAO.<init>(LogStoreDataBaseDAO.java:106) ~[seata-server-1.4.2.jar:na]
        at io.seata.server.storage.db.store.DataBaseTransactionStoreManager.<init>(DataBaseTransactionStoreManager.java:96) ~[seata-server-1.4.2.jar:na]
        at io.seata.server.storage.db.store.DataBaseTransactionStoreManager.getInstance(DataBaseTransactionStoreManager.java:81) ~[seata-server-1.4.2.jar:na]
        at io.seata.server.storage.db.session.DataBaseSessionManager.init(DataBaseSessionManager.java:77) ~[seata-server-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader$InnerEnhancedServiceLoader.initInstance(EnhancedServiceLoader.java:564) ~[seata-common-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader$InnerEnhancedServiceLoader.createNewExtension(EnhancedServiceLoader.java:395) ~[seata-common-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader$InnerEnhancedServiceLoader.getExtensionInstance(EnhancedServiceLoader.java:388) ~[seata-common-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader$InnerEnhancedServiceLoader.loadExtension(EnhancedServiceLoader.java:356) ~[seata-common-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader$InnerEnhancedServiceLoader.load(EnhancedServiceLoader.java:245) ~[seata-common-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader$InnerEnhancedServiceLoader.access$200(EnhancedServiceLoader.java:190) ~[seata-common-1.4.2.jar:na]
        at io.seata.common.loader.EnhancedServiceLoader.load(EnhancedServiceLoader.java:82) ~[seata-common-1.4.2.jar:na]
        at io.seata.server.session.SessionHolder.init(SessionHolder.java:97) ~[seata-server-1.4.2.jar:na]
        at io.seata.server.Server.main(Server.java:80) ~[seata-server-1.4.2.jar:na]

报错的原因是mysql8的时区问题,默认的时区编码有问题,产生了乱码

解决方案

在配置文件中的数据库连接url后面再添加时区的设置serverTimezone

store.db.url=jdbc:mysql://localhost:3306/seata?useUnicode=true&rewriteBatchedStatements=true&serverTimezone=UTC