项目启动报错: [2016-07-13 10:04:15,074] ERROR org.apache.ibatis.executor.BaseExecutor Could not get a databaseId from dataSource java.sql.SQLException: Connections could not be acquired from the underlying database! at com.mchange.v2.sql.SqlUtils.toSQLExce…
Connections could not be acquired from the underlying database! 报错截图: 报错内容: Exception in thread "main" java.sql.SQLException: Connections could not be acquired from the underlying database! at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.…
错误原因 c3p0的配置错误 错误显示 -classpath "D:\Program\Software\IntelliJIDEA\IntelliJ IDEA 2018.2.5\lib\idea_rt.jar;D:\Program\Software\IntelliJIDEA\IntelliJ IDEA 2018.2.5\plugins\junit\lib\junit-rt.jar;D:\Program\Software\IntelliJIDEA\IntelliJ IDEA 2018.2.5\plu…
idea java.sql.SQLException: Connections could not be acquired from the underlying database! 转载自:https://blog.csdn.net/iXinRu/article/details/82624112 把c3p0-config.xml放到resources下面即可…
java中JDBC报错(一) 1.具体报错如下 com.mysql.jdbc.MySqlDataTruncation:Data truncation:Data too long for column 'TID' at row 1 2.错误原因 (1)数据库中的数据类型不一致 (2)字段长度不一致 (3)数据库编码格式有问题…
java项目连接jdbc报错:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server 原因:相关jar包版本太低 解决方法:下载最新版的mysql-connector-java即可…