标签:mysql database 数据库 exception 密码
从基础数据库,无法获取连接,无法连接到数据库。
严重: StandardWrapper.Throwable
org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!at java.lang.Thread.run(Unknown Source)
以上问题可能有一下原因造成:
1、驱动配置有误:driver=com.mysql.jdbc.Driver
2、数据库连接地址有误:url=jdbc:mysql://localhost:3306/test?3useUnicode=true&characterEncoding=utf8
3、密码或帐号有误:username=root,password=root
4、数据库未启动或无权访问
5、项目未引入对应的驱动jar包mysql-connector-java-5.1.6-bin.jar
6、mysql root没有远程访问的权限,需要增加权限,增加权限的步骤如下:
进入mysql数据库:
grant all privileges on *.* to ‘root‘@‘%‘ identified by ‘root‘ with grant option;
flush privileges;
Connections could not be acquired from the underlying database
标签:mysql database 数据库 exception 密码
原文地址:http://blog.csdn.net/testcs_dn/article/details/42194069