Java Wildfly数据源未连接到MySql数据库

我对Wildfly/JBoss完全是新手，所以我不知道该怎么办，从昨天中午开始我就一直坐在这个问题上。 我尝试使用mysql-connector-java-8.0.20.jar作为连接器，我的Wildfly版本是Wildfly-19.0.0.Final。 因此，服务器上的部署似乎工作正常，但每当我尝试添加数据源并测试连接时，就会出现以下错误：

"WFLYJCA0040: failed to invoke operation: WFLYJCA0047: Connection is not valid"

日志/服务器抛出：

2020-06-19 12:47:04,231 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-7) WFLYJCA0001: Bound data source [java:jboss/datasources/MySqlDS]
2020-06-19 12:47:04,353 WARN  [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (External Management Request Threads -- 1) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: IJ031084: Unable to create connection
    at org.jboss.ironjacamar.jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:345)
    at org.jboss.ironjacamar.jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:352)
    at org.jboss.ironjacamar.jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:287)
    at org.jboss.ironjacamar.impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1326)
    at org.jboss.ironjacamar.impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:499)
    at org.jboss.ironjacamar.impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.AbstractPool.internalTestConnection(AbstractPool.java:1067)
    at org.jboss.ironjacamar.impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.strategy.OnePool.testConnection(OnePool.java:93)
    at org.jboss.as.connector@19.0.0.Final//org.jboss.as.connector.subsystems.common.pool.PoolOperations$TestConnectionInPool.invokeCommandOn(PoolOperations.java:240)
    at org.jboss.as.connector@19.0.0.Final//org.jboss.as.connector.subsystems.common.pool.PoolOperations$1.execute(PoolOperations.java:97)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:999)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:743)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:467)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1413)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:429)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.ModelControllerImpl.lambda$execute$1(ModelControllerImpl.java:246)
    at org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
    at org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:255)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:246)
    at org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.DomainApiHandler.handleRequest(DomainApiHandler.java:212)
    at io.undertow.core@2.0.30.Final//io.undertow.server.handlers.encoding.EncodingHandler.handleRequest(EncodingHandler.java:72)
    at org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.DomainApiCheckHandler.handleRequest(DomainApiCheckHandler.java:93)
    at org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.security.ElytronIdentityHandler.lambda$handleRequest$0(ElytronIdentityHandler.java:62)
    at org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:313)
    at org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:270)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:254)
    at org.jboss.as.controller@11.0.0.Final//org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:225)
    at org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.security.ElytronIdentityHandler.handleRequest(ElytronIdentityHandler.java:61)
    at io.undertow.core@2.0.30.Final//io.undertow.server.handlers.BlockingHandler.handleRequest(BlockingHandler.java:56)
    at io.undertow.core@2.0.30.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:376)
    at io.undertow.core@2.0.30.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
    at org.jboss.threads@2.3.3.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.base/java.lang.Thread.run(Thread.java:835)
    at org.jboss.threads@2.3.3.Final//org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: java.sql.SQLException: The server time zone value 'Mitteleurop?ische Sommerzeit' 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 deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:76)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
    at org.jboss.ironjacamar.jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:321)
    ... 35 more
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'Mitteleurop?ische Sommerzeit' 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 java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:85)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:132)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.protocol.a.NativeProtocol.configureTimezone(NativeProtocol.java:2120)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.protocol.a.NativeProtocol.initServerSession(NativeProtocol.java:2143)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:1310)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:967)
    at deployment.mysql-connector-java-8.0.20.jar//com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
    ... 39 more

2020-06-19 12:47:04,356 ERROR [org.jboss.as.controller.management-operation] (External Management Request Threads -- 1) WFLYCTL0013: Operation ("test-connection-in-pool") failed - address: ([
    ("subsystem" => "datasources"),
    ("data-source" => "MySqlDS")
]) - failure description: "WFLYJCA0040: failed to invoke operation: WFLYJCA0047: Connection is not valid"

2020-06-19 12:47:04231信息[org.jboss.as.connector.subsystem.datasources]（MSC服务线程1-7）WFLYJCA0001:绑定数据源[java:jboss/datasources/MySqlDS]
2020-06-19 12:47:04353警告[org.jboss.jca.core.connectionmanager.pool.strategy.OnePool]（外部管理请求线程--1）IJ000604:尝试获取新连接时可丢弃：null:javax.resource.ResourceException:IJ031084:无法创建连接
在org.jboss.ironjacamar。jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection（LocalManagedConnectionFactory.java:345）
在org.jboss.ironjacamar。jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection（LocalManagedConnectionFactory.java:352）
在org.jboss.ironjacamar。jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection（LocalManagedConnectionFactory.java:287）
在org.jboss.ironjacamar。impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedRequestManagedConnectionPool.createConnectionEventListener（SemaphoreConcurrentLinkedRequestManagedConnectionPool.java:1326）
在org.jboss.ironjacamar。impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedRequestManagedConnectionPool.getConnection（SemaphoreConcurrentLinkedRequestManagedConnectionPool.java:499）
在org.jboss.ironjacamar。impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.AbstractPool.internalTestConnection（AbstractPool.java:1067）
在org.jboss.ironjacamar。impl@1.4.20.Final//org.jboss.jca.core.connectionmanager.pool.strategy.OnePool.testConnection（OnePool.java:93）
在org.jboss.as。connector@19.0.0.Final//org.jboss.as.connector.subsystem.common.pool.PoolOperations$TestConnectionInPool.invokeCommandOn（PoolOperations.java:240）
在org.jboss.as。connector@19.0.0.Final//org.jboss.as.connector.subsystem.common.pool.PoolOperations$1.execute（PoolOperations.java:97）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.AbstractOperationContext.ExecuteTEP（AbstractOperationContext.java:999）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.AbstractOperationContext.processStages（AbstractOperationContext.java:743）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.AbstractOperationContext.executeOperation（AbstractOperationContext.java:467）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.OperationContextImpl.executeOperation（OperationContextImpl.java:1413）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.ModelControllerImpl.internalExecute（ModelControllerImpl.java:429）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.ModelControllerImpl.lambda$execute$1（ModelControllerImpl.java:246）
在org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs（SecurityIdentity.java:289）
在org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs（SecurityIdentity.java:255）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.ModelControllerImpl.execute（ModelControllerImpl.java:246）
位于org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.DomainApiHandler.handleRequest（DomainApiHandler.java:212）
在io.undertow。core@2.0.30.Final//io.undertow.server.handlers.encoding.EncodingHandler.HandlerRequest（EncodingHandler.java:72）
位于org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.DomainApiCheckHandler.handleRequest（DomainApiCheckHandler.java:93）
位于org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.security.ElytronIdentityHandler.lambda$handleRequest$0（ElytronIdentityHandler.java:62）
在org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs（SecurityIdentity.java:313）
在org.wildfly.security.elytron-private@1.11.2.Final//org.wildfly.security.auth.server.SecurityIdentity.runAs（SecurityIdentity.java:270）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.AccessAuditContext.doAs（AccessAuditContext.java:254）
在org.jboss.as。controller@11.0.0.Final//org.jboss.as.controller.AccessAuditContext.doAs（AccessAuditContext.java:225）
位于org.jboss.as.domain-http-interface@11.0.0.Final//org.jboss.as.domain.http.server.security.ElytronIdentityHandler.handleRequest（ElytronIdentityHandler.java:61）
在io.undertow。core@2.0.30.Final//io.undertow.server.handlers.BlockingHandler.handleRequest（BlockingHandler.java:56）
在io.undertow。core@2.0.30.Final//io.undertow.server.Connectors.executeRootHandler（Connectors.java:376）
在io.undertow。core@2.0.30.Final//io.undertow.server.HttpServerExchange$1.run（HttpServerExchange.java:830）
在org.jboss。threads@2.3.3.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run（ContextClassLoaderSavingRunnable.java:35）
在org.jboss。threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun（EnhancedQueueExecutor.java:1982）
在org.jboss。threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask（EnhancedQueueExecutor.java:1486）
在org.jboss。threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run（EnhancedQueueExecutor.java:1377）
位于java.base/java.lang.Thread.run（Thread.java:835）
在org.jbos