sql-
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Acquisition Attempt Failed!!! Clearing pending acquires
(2014-10-23 11:55:51)it
WARN BasicResourcePool:1841 -com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@18176ff -- 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: Access denied for user 'root'@'localhost' (using password: YES)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:917)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3974)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1282)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:773)
at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)
at sun.reflect.GeneratedConstructorAcce
at sun.reflect.DelegatingConstructorAcc
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
at com.mchange.v2.c3p0.WrapperConnectionPoolDat
at com.mchange.v2.c3p0.WrapperConnectionPoolDat
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool
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.ThreadPoolAsynchronousRu
出现这种问题,肯定是连接数据库的用户名或密码错误,如果检查都没问题的话,看看你的用户名或密码后面是否有空格,去掉空格就可以解决。
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