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

报错信息

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

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.

解决办法

从提示中可看出，驱动名称有变，更正驱动名称即可

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

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，希望后续修复

另一种解决方案，从SpringBoot2.0之后连接池使用hikari，可根据url自动识别驱动，即如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