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Java Vert.x JDBC client runtime load error: Could not load driverClass com.mysql.jdbc.Driver java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
Posted by: Kok How Teh
Date: July 02, 2020 12:39AM

I have the following dependency in pom.xml:
```
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.20</version>
<scope>runtime</scope>
</dependency>
```
My MySQL server is `8.0.20`. Running my Java Vert.x application from the command line `vertx run com.restapi.vertx.Launcher -cp target/*` or `java --add-opens java.base/jdk.internal.misc=ALL-UNNAMED -Dio.netty.tryReflectionSetAccessible=true -jar target/restapi-1.0-fat.jar` bumps into the following runtime exception:
```
Could not load driverClass com.mysql.jdbc.Driver
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:340)
at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(DriverManagerDataSource.java:143)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:159)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:161)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:147)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:202)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1176)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1163)
at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1908)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
```
Any advice and insight is appreciated.

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Posted
Java Vert.x JDBC client runtime load error: Could not load driverClass com.mysql.jdbc.Driver java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
Kok How Teh
July 02, 2020 12:39AM
Re: Java Vert.x JDBC client runtime load error: Could not load driverClass com.mysql.jdbc.Driver java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
Filipe Silva
July 02, 2020 03:34AM


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