SpringBoot mysql驱动问题

问题描述

问题发生时间（2018-12-27）

环境版本：

• SpringBoot 2.1.1
• Mybatis 1.3.2

原始配置

spring:
 datasource:
 driver-class-name:  com.mysql.jdbc.Driver
 username: hikaricp
 password: hikaricp
 url: jdbc:mysql://localhost:3306/db_test?characterEncoding=utf-8&useSSL=false
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报错信息

Registered driver with driverClassName=com.mysql.jdbc.Driver was not found,
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报错提示

Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
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解决办法

从提示中可看出，驱动名称有变，更正驱动名称便可

更正后配置

spring:
 datasource:
 driver-class-name:  com.mysql.cj.jdbc.Driver
 username: hikaricp
 password: hikaricp
 url: jdbc:mysql://localhost:3306/db_test?characterEncoding=utf-8&useSSL=false
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同时若使用IDEA自带提示也可看出问题，有两种驱动都存在的问题，但愿后续修复

另外一种解决方案，从SpringBoot2.0以后链接池使用hikari，可根据url自动识别驱动，即以下配置也可成功运行

spring:
 datasource:
 username: hikaricp
 password: hikaricp
 url: jdbc:mysql://localhost:3306/db_test?characterEncoding=utf-8&useSSL=false
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