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大佬幫忙看一下，謝謝

java.sql.SQLException: No suitable driver

at java.sql.DriverManager.getDriver(DriverManager.java:315) ~[na:1.8.0_191]

at com.mchange.v2.c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.java:285) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) ~[c3p0-0.9.5.2.jar:0.9.5.2]

at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696) [mchange-commons-java-0.2.11.jar:0.2.11]

2019-03-13 18:49:14.328? WARN 6500 --- [HelperThread-#2] c.m.v2.resourcepool.BasicResourcePool? ? : Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@1daf3b44 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.

2019-03-13 18:49:14.326? WARN 6500 --- [HelperThread-#0] c.m.v2.resourcepool.BasicResourcePool? ? : com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3903692a -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (2). Last acquisition attempt exception:?