Reason: Failed to determine suitable jdbc url 問題解決

***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine suitable jdbc url

Action:

Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

 

錯誤原因

在pom中引入了mybatis-spring-boot-starter ，Spring boot默認會加載org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration類，DataSourceAutoConfiguration類使用了@Configuration註解向spring注入了dataSource bean。因爲工程中沒有關於dataSource相關的配置信息，當spring創建dataSource bean因缺少相關的信息就會報錯。

解決錯誤
第一種方法： 在Spring boot的啓動引導類上增加@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})，阻止Spring boot自動注入dataSource

第二種方法：

 添加配置文件 指定 數據庫配置源

@Configuration
public class ServerConfiguration {

    @Bean
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource dataSource() {
        // 配置數據源（注意，我使用的是 HikariCP 連接池），以上註解是指定數據源，否則會有衝突
        return DataSourceBuilder.create().build();
    }

}

在 application.yml 文件中 寫有 數據庫連接配置

spring:
  application:
    name: oauth2-server
  datasource:
    type: com.zaxxer.hikari.HikariDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    jdbc-url: jdbc:mysql://localhost:3306/oauth2?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8
    # url: jdbc:mysql://localhost:3306/oauth2?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8
    username: root
    password: 123123
    hikari:
      minimum-idle: 5
      idle-timeout: 600000
      maximum-pool-size: 10
      auto-commit: true
      pool-name: MyHikariCP
      max-lifetime: 1800000
      connection-timeout: 30000
      connection-test-query: SELECT 1