SpringBoot2整合多数据源

新增springboot项目

勾选 所需jar

最后finish完成，坐等项目构建完成…

项目初始化完成后，修改application文件 调整pom

<?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>2.1.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
            <scope>runtime</scope>
        </dependency>
<!--        <dependency>-->
<!--            <groupId>com.oracle.database.jdbc</groupId>-->
<!--            <artifactId>ojdbc8</artifactId>-->
<!--            <scope>runtime</scope>-->
<!--        </dependency>-->

        <!--oracle驱动-->
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.3</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </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>

        <!-- 动态数据源 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.2.1</version>
        </dependency>
        <!-- 连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.20</version>
        </dependency>

        <!-- swagger2 -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </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

#启动访问端口
server:
  port: 9090
  tomcat:
    remote-ip-header: x-forward-for
    uri-encoding: UTF-8
    max-threads: 10
    background-processor-delay: 30

#访问环境配置
spring:
  application:
    name: demo
  profiles:
        active: dev
#active: test
  #active: prod
  #设置文件上传大小限制
  servlet:
    multipart:
      max-file-size: -1
      max-request-size: -1

#配置mapper文件目录/使用sequence主键
mybatis-plus:
  mapper-locations: classpath:/mapper/**/*Mapper.xml
  type-aliases-package: com.example.demo.entity
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl  #打印sql


#slf4j log管理
logging:
  config: classpath:log/logback-spring.xml

#是否开启 swagger-ui
swagger:
  enabled: true
  stu-url: http://127.0.0.0:8090

application-dev.yml 配置多个数据源 然后在mapper上通过注解方式访问即可 @DS(“master”)

#动态数据源配置
spring:
  autoconfigure:
    exclude: com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure   #自动化配置 例外处理
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    dynamic:
      primary: master
      datasource:
        master: #主数据库配置
          url: jdbc:sqlserver://172.30.7.64:1433;databaseName=test1
          driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
          username: sa
          password: 123456
        slaver1: 
          url: jdbc:sqlserver://172.30.7.64:1433;databaseName=test2
          driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
          username: sa
          password: Yess5678!
        slaver2: 
          url: jdbc:sqlserver://172.30.7.64:1433;databaseName=test3
          driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
          username: sa
          password: 123456
		#slaver3:
		  #username: root
		  #password: 123456
		  #driver-class-name: oracle.jdbc.driver.OracleDriver
		  #url: jdbc:oracle:thin:@127.0.0.1:1521:orcl
		#slaver4: 
          #url: jdbc:mysql://172.30.7.51:3306/db_zb?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8
          #driver-class-name: com.mysql.cj.jdbc.Driver
          #username: root
          #password: 123456
      druid:  #公共配置
        initial-size: 10
        max-active: 100
        min-idle: 10
        max-wait: 60000
        pool-prepared-statements: true
        max-pool-prepared-statement-per-connection-size: 20
        time-between-eviction-runs-millis: 60000
        min-evictable-idle-time-millis: 300000
        validation-query: SELECT 'x'
        test-while-idle: true
        test-on-borrow: false
        test-on-return: false