解决：Connections could not be acquired from the underlying database
2014-06-25 15:47
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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
我是因为以上文件配置有误导致。
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
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
我是因为以上文件配置有误导致。
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
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