老师这个是什么问题，是检测spring-dao的时候报的错

Question

java.sql.SQLException: No suitable driver

at java.sql.DriverManager.getDriver(Unknown Source)

at com.mchange.v2.c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.java:223)

at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)

at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)

at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)

at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)

at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)

at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)

at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)

at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)

Answer 1

翔仔 2017-11-23 03:27:32

同学您好，通过这个信息只能初步判定pom里jar的配置不对或者下载jar不完整，请检查maven的环境配置以及相应jar包 感觉是mysql connector jar 或者 c3p0缺失 同学可以在群里提问 目前大家都能解决呢

• 提问者 23287973 #1

  非常感谢！

• qq_一缕阳光_31 #2

  包没有缺失  都有 但是还是一样报错

• 翔仔 回复 qq_一缕阳光_31 #3

  这种情况原因有俩：1.maven dependecies里没有这个该数据库驱动jar虽然pom里有了 2.maven repository里jar下载不完全所以有问题 需要删了重新update maven project下一遍 。程序说一是一 不会骗同学的 ：）

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