Springboot+mybatis+多數據源配置秒懂！（圖文詳解！）

Springboot+mybatis+多數據源配置（圖文詳解！）
首先注意一下目錄結構

解讀目錄：紅框框起來的是必須的文件
resource資源文件下放兩個文件夾分別裝操控不同數據庫的xml文件

controller層不需要變動

dao層 也就是 mapper接口層創建兩個不同的包來對應上面兩個 xml文件

創建datasource包來存放兩個數據源的配置文件配置映射dao和mapper.xml的路徑

service層和實現類impl 不需要改變

vo實體類

run啓動類

接下來直接上代碼

yml

server:
   tomcat:
     uri-encoding:UTF-8
   port: 8763
 
   
spring:
   http:
     encoding:
       charset: UTF-8
       force: true
       enabled: true
       max-file-size: 3MB
       max-request-size: 100MB
       
   application:
      name: sportsSystem
      
#   主要是這裏配置兩個數據源 db1 和 db2
   datasource:
    db1:
      url: jdbc:mysql://localhost:3306/clouddb01
      username: root
      password: root
      driver-class-name: com.mysql.jdbc.Driver   
    db2:
      url: jdbc:mysql://localhost:3306/clouddb02
      username: root
      password: root
      driver-class-name: com.mysql.jdbc.Driver
      type: com.alibaba.druid.pool.DruidDataSource
      filters: stat
      maxActive: 20
      initialSize: 10
      maxWait: 60000
      minIdle: 10
      timeBetweenEvictionRunsMillis: 60000
      minEvictionRunsMillis: 300000
      testWhileIdle: true
      testOnBorrow: true
      testOnReturn: false
      poolPreparedStatements: true
      maxOpenPreparedStatements: 20
mybatis:
   mapperLocations: classpath:mapper/ *.xml
   config-locations: classpath:mybatis/config.xml

run啓動類

package com.rs;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Configuration;






@SpringBootApplication
@Configuration
public class Run{
	
    public static void main(String[] args) throws Exception {
    	SpringApplication.run(Run.class, args);
    }

}

controller

package com.rs.controller;

import io.swagger.annotations.ApiOperation;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import springfox.documentation.annotations.ApiIgnore;

import com.rs.service.DeptService;
import com.rs.util.AddressUtil;
import com.rs.util.FileUpload;
import com.rs.vo.Dept;




@CrossOrigin
@Controller 
/**
 * 商家
 * @author 12450
 *
 */
public class DeptController {
	
Logger logger = LoggerFactory.getLogger(DeptController.class);
	
@Autowired
 private DeptService deptService;

		/**
	 * 查詢所有商戶信息
	 * @param user
	 * @return
	 */
	@ApiOperation(value="查詢所有商戶信息")
	@RequestMapping(value = "/bisinessFandAll", method = RequestMethod.POST)
	@ResponseBody
	public Map<String,List<Dept>> bisinessFandAll(){
		List<Dept> list= deptService.venueFindAll();
		Map<String,List<Dept>> map=new HashMap<String,List<Dept>>();
		map.put("business", list);
		return map;		
	}
	
	/**
	 * 查詢所有商戶信息
	 * @param user
	 * @return
	 */
	@ApiOperation(value="查詢所有商戶信息")
	@RequestMapping(value = "/bisinessFandAll2", method = RequestMethod.POST)
	@ResponseBody
	public Map<String,List<Dept>> bisinessFandAll2(){
		List<Dept> list= deptService.venueFindAll2();
		Map<String,List<Dept>> map=new HashMap<String,List<Dept>>();
		map.put("business", list);
		return map;		
	}

}

service

package com.rs.service;

import java.util.List;
import java.util.Map;

import com.rs.vo.Dept;



public interface DeptService {

	/**
	 * 查詢所有場館的名稱
	 */
	List<Dept> venueFindAll();
	
	/**
	 * 查詢所有場館的名稱
	 */
	List<Dept> venueFindAll2();
	

}

impl

package com.rs.service.impl;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.rs.dao.DeptDao;
import com.rs.dao2.DeptDao2;
import com.rs.service.DeptService;
import com.rs.util.AddressUtil;
import com.rs.vo.Dept;

/**
 * 商戶業務實現類
 * @author 82306
 *
 */

@Service("businessService")
@Transactional 
public class DeptServiceImpl implements DeptService {
	//注入商家數據層
	@Autowired
	private DeptDao bisinessDao;
	
	@Autowired
	private DeptDao2 bisinessDao2;

	@Override
	public List<Dept> venueFindAll() {
		List<Dept>  deptlist =  bisinessDao.bisinessFandAll();
		
		
		for(int i = 0; i<=1 ; i++){
			for (Dept dept : deptlist) {
				bisinessDao2.addDept(dept);
			}
		}
		return deptlist;
	}

	@Override
	public List<Dept> venueFindAll2() {
		// TODO Auto-generated method stub
		List<Dept>  deptlist =  bisinessDao2.bisinessFandAll2();
		return deptlist;
	}
	


}

dao 兩個dao包內的 class名字最好要不同的

package com.rs.dao;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.rs.vo.Dept;

@Mapper
public interface DeptDao {

	
	
	List<Dept> bisinessFandAll();
	

}

dao2

package com.rs.dao2;


import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.rs.vo.Dept;


@Mapper
public interface DeptDao2 {

	List<Dept> bisinessFandAll2();
	
	void addDept(Dept dept);
}

mapper

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE mapper    
    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"    
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.rs.dao.DeptDao">
	<resultMap type="com.rs.vo.Dept" id="dept">
		<id column="detid" property="detid"/>
		<result column="dname" property="dname"/>
		<result column="db_source" property="db_source"/>
	</resultMap>
	
	
	
	<select id="bisinessFandAll" resultMap="dept">
		select * from dept 
	</select>
	
	
	
</mapper>

mapper2

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE mapper    
    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"    
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.rs.dao2.DeptDao2">
	<resultMap type="com.rs.vo.Dept" id="dept">
		<id column="detid" property="detid"/>
		<result column="dname" property="dname"/>
		<result column="db_source" property="db_source"/>
	</resultMap>
	
	<select id="bisinessFandAll2" resultMap="dept">
		select * from dept 
	</select>
	
	
	<insert id="addDept" parameterType="com.rs.vo.Dept">
	 insert into dept (dname,db_source)  values (#{dname},#{db_source});
	</insert>
	
</mapper>

pom 有很多多餘的jar 用到什麼請自行篩選

<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">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.rs</groupId>
	<artifactId>sports-system</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.4.RELEASE</version>
	</parent>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<spring-cloud.version>Edgware.SR4</spring-cloud.version>
	</properties>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<includeSystemScope>true</includeSystemScope>
				</configuration>
			</plugin>
		</plugins>
	</build>
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.2</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>

		<!-- 新添加的jar -->
		<dependency>
			<groupId>org.apache.directory.studio</groupId>
			<artifactId>org.apache.commons.io</artifactId>
			<version>2.1</version>
		</dependency>

		<dependency>
			<groupId>dom4j</groupId>
			<artifactId>dom4j</artifactId>
			<version>1.6.1</version>
		</dependency>
		<dependency>
			<groupId>org.jdom</groupId>
			<artifactId>jdom</artifactId>
			<version>1.1</version>
		</dependency>

		<!--微信授權 -->
		<dependency>
			<groupId>commons-beanutils</groupId>
			<artifactId>commons-beanutils</artifactId>
			<version>1.9.3</version>
		</dependency>
		<dependency>
			<groupId>commons-collections</groupId>
			<artifactId>commons-collections</artifactId>
			<version>3.2.1</version>
		</dependency>
		<dependency>
			<groupId>commons-lang</groupId>
			<artifactId>commons-lang</artifactId>
			<version>2.6</version>
		</dependency>
		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>
		<dependency>
			<groupId>net.sf.ezmorph</groupId>
			<artifactId>ezmorph</artifactId>
			<version>1.0.6</version>
		</dependency>
		<dependency>
			<groupId>net.sf.json-lib</groupId>
			<artifactId>json-lib</artifactId>
			<version>2.2.3</version>
			<classifier>jdk15</classifier><!-- 指定jdk版本 -->
		</dependency>


		<!-- https://mvnrepository.com/artifact/dom4j/dom4j -->
		<dependency>
			<groupId>dom4j</groupId>
			<artifactId>dom4j</artifactId>
			<version>1.6.1</version>
		</dependency>

		<!-- 定位所需jar -->
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.7.4</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.7.4</version>
		</dependency>
		<dependency>
			<groupId>com.ning</groupId>
			<artifactId>async-http-client</artifactId>
			<version>1.8.7</version>
		</dependency>
		<!-- 阿里雲短信驗證 -->
		<dependency>
			<groupId>com.aliyun</groupId>
			<artifactId>aliyun-java-sdk-core</artifactId>
			<version>4.1.0</version>
		</dependency>
		<!-- 二維碼生成 -->
		<dependency>
			<groupId>com.google.zxing</groupId>
			<artifactId>core</artifactId>
			<version>3.3.0</version>
		</dependency>
		<!--圖片壓縮 -->
		<dependency>
			<groupId>net.coobird</groupId>
			<artifactId>thumbnailator</artifactId>
			<version>0.4.8</version>
		</dependency>
		<!-- 數據庫連接池 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.6</version>
		</dependency>

		<!-- swagger -->
		<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger2</artifactId>
			<version>2.9.2</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger-ui</artifactId>
			<version>2.9.2</version>
		</dependency>
	<dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>25.1-jre</version>
        </dependency>
        
        
        
		<dependency>
			<groupId>com.github.wxpay</groupId>
			<artifactId>wxpay-sdk</artifactId>
			<version>0.0.3</version>
		</dependency>
		<dependency>
		    <groupId>com.google.code.gson</groupId>
		    <artifactId>gson</artifactId>
		    <version>2.8.5</version>
		</dependency>
		
		<!-- 分頁工具 -->
		<dependency>
		    <groupId>com.github.pagehelper</groupId>
		    <artifactId>pagehelper-spring-boot-starter</artifactId>
		    <version>1.1.1</version>
		</dependency>
		
		<!-- WX手機號解密  Josn包 -->
		<dependency>
		    <groupId>com.alibaba</groupId>
		    <artifactId>fastjson</artifactId>
		    <version>1.2.60</version>
		</dependency>
		<!-- 輸入法自帶表情  轉碼  -->
		<dependency>
		    <groupId>com.alibaba</groupId>
		    <artifactId>dubbo-common</artifactId>
		    <version>2.6.2</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
		<dependency>
		    <groupId>commons-codec</groupId>
		    <artifactId>commons-codec</artifactId>
		    <version>1.12</version>
		</dependency>
		
	</dependencies>

</project>

直接複製代碼即可運行！重點是 DataSource文件** 其次是 dao和mapper.xml需要分兩個。其他無需修改。本人測試兩個數據庫可以同時調用運行。

Springboot+mybatis+多數據源配置秒懂！（圖文詳解！）

Springboot+mybatis+多數據源配置秒懂！（圖文詳解！）

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