QueryRunner requires a DataSource to be invoked in this way, or a Connection should be passed in
2018-01-21 20:55
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1.注意有没有dataSoure:配置文件是否有误
2.有没有connection:runner()里面是否添加ds参数.
12.Connections could not be acquired from the underlying database!
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' withgrant option;
flush privileges;
2.有没有connection:runner()里面是否添加ds参数.
12.Connections could not be acquired from the underlying database!
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' withgrant option;
flush privileges;
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