SpringBoot mysql驅動問題

問題描述

問題發生時間（2018-12-27）

環境版本：

• 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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報錯信息

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

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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解決辦法

從提示中可看出，驅動名稱有變，更正驅動名稱便可

更正後配置

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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同時若使用IDEA自帶提示也可看出問題，有兩種驅動都存在的問題，但願後續修復

另外一種解決方案，從SpringBoot2.0以後鏈接池使用hikari，可根據url自動識別驅動，即以下配置也可成功運行

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