springboot多数据源配置

可同时配置多个多种数据源(例如:mysql,sqlserver,oracle)

官方文档地址:https://gitee.com/baomidou/dynamic-datasource-spring-boot-starter

入门demo地址:https://gitee.com/li-yanning/springboot-multiple-data.git

01 引入坐标

<!--是一个基于springboot的快速集成多数据源的启动器(本篇重点)-->
<dependency>
   <groupId>com.baomidou</groupId>
  <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
  <version>3.4.1</version>
</dependency>

02 配置文件

server:
  port: 8100
spring:
  datasource:
    dynamic:
      #设置默认的数据源或者数据源组,默认值即为master
      primary: master
      #严格匹配数据源,默认false. true未匹配到指定数据源时抛异常,false使用默认数据源
      strict: false
      datasource:
        master:
          url: jdbc:mysql://localhost:3306/ajava?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&useSSL=false&rewriteBatchedStatements=true
          username: root
          password: root
          driver-class-name: com.mysql.jdbc.Driver
        second:
          url: jdbc:mysql://localhost:3306/heima_movies?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&useSSL=false&rewriteBatchedStatements=true
          username: root
          password: root
          driver-class-name: com.mysql.jdbc.Driver          
#        sqlserver:
#          url: jdbc:sqlserver://localhost:9092;DatabaseName=crm-gooling
#          username: root
#          password: root
#          driverClassName: com.microsoft.sqlserver.jdbc.SQLServerDriver
mybatis-plus:
  type-aliases-package: com.saiyou.entity
  mapper-locations: classpath*:/mapper/**/*Mapper.xml
  configuration:
    map-underscore-to-camel-case: true
    cache-enabled: true
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl  # sql输出到控制台,方便开发调试
  global-config:
    banner: false
    db-config:
      id-type: auto
      insert-strategy: not_empty
      update-strategy: not_empty
      logic-delete-value: 1
      logic-not-delete-value: 0
      logic-delete-field: deleted
​

03 使用 @DS 切换数据源。

在service的实现类上加@Ds("second")注解

主数据源不用加@Ds注解

@DS 可以注解在方法上或类上