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今天用springboot 用yml去连接数据库出现了一个报错先现在用于分享一下:
这是我的数据库配置文件;
spring: datasource: url:
jdbc:mysql://localhost:3306/mybatis?useSSL=false&useUnicode=true&characterEncoding=UTF-8
username: root password: 000000 driver-class-name: com.mysql.jdbc.Driver
之后再springboot提供的测试类里编写以下代码用于测试;
import org.junit.jupiter.api.Test; import
org.springframework.beans.factory.annotation.Autowired; import
org.springframework.boot.test.context.SpringBootTest; import
javax.sql.DataSource; import java.sql.Connection; import java.sql.SQLException;
@SpringBootTest class Springboot04DataApplicationTests { @Autowired DataSource
dataSource; @Test void contextLoads() throws SQLException {
//查看一下默认数据源:com.zaxxer.hikari.HikariDataSource
System.out.println(dataSource.getClass()); //获得数据库连接 Connection connection=
dataSource.getConnection(); System.out.println(connection); //关闭
connection.close(); } }
结果一运行就是报错;
根据经验,一般出现这种问题大多数是因为url,name,password三个中其中一个写错了。后来我在网上查找了说加时区什么之类的,发现都没有用。仔细检查发现我的配置文件都没有错呀。正当我一筹莫展的时候,我意识到可能在配置文件中用户名或者密码需要加上引号与字符串的形式写上去;
spring: datasource: url:
jdbc:mysql://localhost:3306/mybatis?useSSL=false&useUnicode=true&characterEncoding=UTF-8
username: root password: '000000' driver-class-name: com.mysql.jdbc.Driver
像这样,我就运行成功了!虽然说解决完后感觉这个问题很简单,但是我还是花了一些时间才把这个错误排出,为让自己下意识地快速找到还是有必要记录一下。
总结一下就是当遇到:java.sql.SQLException: Access denied for user 'root'@'localhost'
(using password: YES)这种问题的时候,不要去看其他的,就是配置文件写错了,把应有的格式加上,应有的引号加上就可以解决这个问题了。