Jfinal 使用C3p0连接远程数据库时报错，连不上！前提是密码账号正确。

发布于 2021-11-23 15:18:00 字数 2623 浏览 976 评论 5

[WARN]-[Thread: Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@113b108]-[com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run()]: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@11b7a14 -- 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 (30). Last acquisition attempt exception:

java.sql.SQLException: null, message from server: "Host 'PHXJGCEYFF7C8GA' is not allowed to connect to this MySQL server"

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)

at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1136)

at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2395)

at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2428)

at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2213)

at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:797)

at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)

at sun.reflect.GeneratedConstructorAccessor2.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)

at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)

at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)

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.ThreadPerTaskAsynchronousRunner$TaskThread.run(ThreadPerTaskAsynchronousRunner.java:255)