springboot整合mybatis（使用的baomidou的mybatis-plus-boot-starter）实现多数据源切换_baomidou mybatis-plus-boot-starter-CSDN博客

本文链接：https://blog.csdn.net/qqzhengwei/article/details/117667304

本文介绍了如何在Spring Boot项目中使用Mybatis和Druid实现数据库源的动态切换，包括配置pom依赖、YAML参数、代码实现（DataSourceConfig、DynamicDataSource和AspectJ切面）以及自定义注解和数据源上下文管理。

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基于mybatis的多数据源切换，首先要实现需要准备些什么东西呢？

1、pom依赖

2、yml配置参数

3、代码方面

（1）准备好连接的DataSource

（2）aspectj（切面），用于动态切换数据源

pom依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-boot-group</artifactId>
        <groupId>com.wolf.boy</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spring-boot-mybatis-d2</artifactId>
    <properties>
        <mybatis-plus.version>3.4.2</mybatis-plus.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- springboot-aop包,AOP切面注解,Aspectd等相关注解 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mybatis-plus.version}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
    </dependencies>

</project>

yml参数配置

在yml参数配置里面，配置2个数据库源的配置

server:
  port: 7777

spring:
  datasource:
    db1:
      jdbc-url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai&tin