连接mysql库报的异常信息：

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the connection string near ';characterEncoding=UTF-8&;serverTimezone=Asia/Shanghai'.)

    at org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:)

    at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:)

    at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:)

    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:)

    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:)

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:)

    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:)

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:)

    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:)

    at com.sun.proxy.$Proxy25.transfer(Unknown Source)

    at com.cyb.ms.service.AccountServiceTest.testTransfer(AccountServiceTest.java:)

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)

    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)

    at java.base/java.lang.reflect.Method.invoke(Method.java:)

    at org.junit.runners.model.FrameworkMethod$.runReflectiveCall(FrameworkMethod.java:)

    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:)

    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:)

    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:)

    at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:)

    at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:)

    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:)

    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:)

    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:)

    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:)

    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:)

    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:)

    at org.junit.runners.ParentRunner$.run(ParentRunner.java:)

    at org.junit.runners.ParentRunner$.schedule(ParentRunner.java:)

    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:)

    at org.junit.runners.ParentRunner.access$(ParentRunner.java:)

    at org.junit.runners.ParentRunner$.evaluate(ParentRunner.java:)

    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:)

    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:)

    at org.junit.runners.ParentRunner.run(ParentRunner.java:)

    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:)

    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:)

    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:)

    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:)

    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:)

    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:)

    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:)

Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the connection string near ';characterEncoding=UTF-8&;serverTimezone=Asia/Shanghai'.)

    at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:)

    at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:)

    at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:)

    at org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:)

    ...  more

Caused by: java.sql.SQLNonTransientConnectionException: Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the connection string near ';characterEncoding=UTF-8&;serverTimezone=Asia/Shanghai'.

    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:)

    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:)

    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:)

    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:)

    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:)

    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:)

    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:)

    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:)

    at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:)

    at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:)

    at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:)

    at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:)

    ...  more

Caused by: com.mysql.cj.exceptions.UnableToConnectException: Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the connection string near ';characterEncoding=UTF-8&;serverTimezone=Asia/Shanghai'.

    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:)

    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:)

    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:)

    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:)

    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:)

    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:)

    ...  more

Caused by: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the connection string near ';characterEncoding=UTF-8&;serverTimezone=Asia/Shanghai'.

    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:)

    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:)

    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:)

    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:)

    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:)

    at com.mysql.cj.conf.ConnectionUrlParser.processKeyValuePattern(ConnectionUrlParser.java:)

    at com.mysql.cj.conf.ConnectionUrlParser.parseQuerySection(ConnectionUrlParser.java:)

    at com.mysql.cj.conf.ConnectionUrlParser.getProperties(ConnectionUrlParser.java:)

    at com.mysql.cj.conf.ConnectionUrl.collectProperties(ConnectionUrl.java:)

    at com.mysql.cj.conf.ConnectionUrl.<init>(ConnectionUrl.java:)

    at com.mysql.cj.conf.url.SingleConnectionUrl.<init>(SingleConnectionUrl.java:)

    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:)

    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:)

    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:)

    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:)

    at com.mysql.cj.util.Util.handleNewInstance(Util.java:)

    at com.mysql.cj.util.Util.getInstance(Util.java:)

    at com.mysql.cj.util.Util.getInstance(Util.java:)

    at com.mysql.cj.conf.ConnectionUrl.getConnectionUrlInstance(ConnectionUrl.java:)

    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:)

    ...  more

解决方法

连接的mysql是8.0.18版本，首先更新mysql驱动到对应版本

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

            <version>8.0.18</version>

        </dependency>

原先的url

jdbc:mysql://localhost:3306/demo?useUnicode=true&;characterEncoding=UTF-8&;serverTimezone=Asia/Shanghai

修改后的url

jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai

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