<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ll.edu</groupId>
    <artifactId>multiplatedatasource</artifactId>
    <version>1</version>
    <name>multiplatedatasource</name>
    <description>多数据源</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
<!--        数据库多数据源相关-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.4</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.3.6</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.21</version>
        </dependency>

        <!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.83</version>
        </dependency>
        <!--        swagger-->
<!--        <dependency>-->
<!--            <groupId>io.springfox</groupId>-->
<!--            <artifactId>springfox-swagger2</artifactId>-->
<!--            <version>2.9.2</version>-->
<!--        </dependency>-->
<!--        <dependency>-->
<!--            <groupId>com.github.xiaoymin</groupId>-->
<!--            <artifactId>swagger-bootstrap-ui</artifactId>-->
<!--            <version>1.9.6</version>-->
<!--        </dependency>-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>
application.yml

mybatis-plus:
    configuration:
        log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
        map-underscore-to-camel-case: true
    mapper-locations: classpath*:mapper/*.xml
server:
    port: 8080
spring:
    datasource:
        dynamic:
            datasource:
                master:
                    type: com.zaxxer.hikari.HikariDataSource
                    driver-class-name: oracle.jdbc.OracleDriver
                    url: jdbc:oracle:thin:@//127.0.0.1:1521/orcl
                    username: scott
                    password: tiger
                slave:
                    type: com.zaxxer.hikari.HikariDataSource
                    driver-class-name: com.mysql.cj.jdbc.Driver
                    password: root
                    url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=UTF-8&useUnicode=true&useSSL=false&serverTimezone=GMT
                    username: root
            primary: master
            strict: false
        hikari:
            minimum-idle: 5
            idle-timeout: 600000
            auto-commit: true
            pool-name: Hikari Pool
            max-lifetime: 1800000
            connection-timeout: 30000
            connection-test-query: Select 1

主启动类

package com.wl.edu;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@MapperScan("com.ll.edu.dao")
@EnableScheduling
public class MultiplatedatasourceApplication {

    public static void main(String[] args) {
        SpringApplication.run(MultiplatedatasourceApplication.class, args);
    }

}