springboot多數據源分包式實現

創建maven項目並添加依賴 我這裏用的是SQLserver mybatis

<parent>
	<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.3.RELEASE</version>
	</parent>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>com.microsoft.sqlserver</groupId>
			<artifactId>sqljdbc4</artifactId>
			<version>4.0</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.5</version>
		</dependency>


		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-configuration-processor</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-configuration-processor</artifactId>
			<optional>true</optional>
		</dependency>
	</dependencies>

application.properties配置文件中添加 多個數據源

spring.datasource.test1.jdbcUrl=jdbc:sqlserver://ip:port;DatabaseName=xxglptcsDB
spring.datasource.test1.username=sa
spring.datasource.test1.password=123
spring.datasource.test1.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver

spring.datasource.test2.jdbcUrl=jdbc:sqlserver://ip:port;DatabaseName=xxglptcsDB1
spring.datasource.test2.username=sa
spring.datasource.test2.password=123
spring.datasource.test2.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver

項目結構

啓動類

這裏掃包除了controller層 service層 還要添加DataSource包 （博主因爲沒掃這個包找了兩個小時的錯……）

在網上找了兩個小時也沒有一個管用的 ，然後博主突然想到這配置文件跟數據源配置類好像也沒有關聯，於是就添加了掃DataSource包

如果沒有掃數據源配置包 可能會報這個錯Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required

或者'url' attribute is not specified and no embedded datasource could be configured.

package com.vhukze.App;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

/**
 * @author zsz
 * @version
 * @創建時間：2019年9月2日 下午1:08:00
 */

@SpringBootApplication
@ComponentScan(basePackages= {"com.vhukze.controller","com.vhukze.test1.service","com.vhukze.test2.service","com.vhukze.datasource"})
@MapperScan({"com.vhukze.test1.mapper","com.vhukze.test2.mapper"})
public class App {
	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}
}

數據源配置類

test1

package com.vhukze.datasource;


import javax.sql.DataSource;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

/**
* @author zsz
* @version 
* @創建時間：2019年9月2日 上午11:19:09
*/
@Configuration
@MapperScan(basePackages="com.vhukze.test1.mapper",sqlSessionFactoryRef="test1SqlSessionFactory")//掃描對應的dao包     
public class Datasource1 {

	
	@Bean(name="test1DataSource")
	@ConfigurationProperties(prefix="spring.datasource.test1")//這裏是配置文件裏定義的屬性名
	@Primary //默認優先使用
	public DataSource testDataSource() {
		return DataSourceBuilder.create().build();
	}
	
	//@Qualifier 從spring容器中查找名爲test1DataSource的bean
	@Bean(name="test1SqlSessionFactory")
	@Primary //默認優先使用
	public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource) throws Exception { 
		SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
		bean.setDataSource(dataSource);
		
		//需要加載配置文件的話
//		bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:*.xml"));
		
		return bean.getObject();
	}
	
	
	/**
	 * @author zsz
	 * @編輯時間 2019年9月2日上午11:45:07
	 * @編輯說明  事務管理
	 * @param dataSource
	 * @return
	 */
	@Bean(name="test1TuansactionManager")
	@Primary //默認優先使用
	public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource){ 
		return new DataSourceTransactionManager(dataSource);
	}
	
	@Bean(name="test1SqlSessionTemplate")
	@Primary //默認優先使用
	public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) { 
		return new SqlSessionTemplate(sqlSessionFactory);
	}
}

 

test2

package com.vhukze.datasource;


import javax.sql.DataSource;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

/**
* @author zsz
* @version 
* @創建時間：2019年9月2日 上午11:53:15
*/
@Configuration
@MapperScan(basePackages="com.vhukze.test2.mapper",sqlSessionFactoryRef="test2SqlSessionFactory")//掃描對應的dao包     
public class Datasource2 {

	
	@Bean(name="test2DataSource")
	@ConfigurationProperties(prefix="spring.datasource.test2")//這裏是配置文件裏定義的屬性名
	public DataSource testDataSource() {
		return DataSourceBuilder.create().build();
	}
	
	@Bean(name="test2SqlSessionFactory")
	public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource) throws Exception { 
		SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
		bean.setDataSource(dataSource);
		
		//需要加載配置文件的話
//		bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:*.xml"));
		
		return bean.getObject();
	}
	
	
	/**
	 * @author zsz
	 * @編輯時間 2019年9月2日上午11:54:08
	 * @編輯說明  事務管理
	 * @param dataSource
	 * @return
	 */
	@Bean(name="test2TuansactionManager")
	public DataSourceTransactionManager testTransactionManager(@Qualifier("test2DataSource") DataSource dataSource){ 
		return new DataSourceTransactionManager(dataSource);
	}
	
	@Bean(name="test2SqlSessionTemplate")
	public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) { 
		return new SqlSessionTemplate(sqlSessionFactory);
	}
}

到此所有的配置都完成了

接下來就是走一下流程了

controller層

@RestController
public class UserController {

	@Autowired
	private User1Service service1;
	@Autowired
	private User2Service service2;
	
	@RequestMapping("index")
	public String index() {
		service1.insert();
		service2.insert();
		return "success";
	}
}

service層 （1和2都是一樣的  這裏貼一個就可以了）

@Service
public class User1Service {

	@Autowired
	private User1Mapper mapper1;
	
	public void insert() {
		
		mapper1.insert();
	}

}

dao層（1和2都是一樣的 這裏貼一個就可以了）

@Repository
public interface User1Mapper{

	@Insert("insert into user_demo values('1','1')")
	public void insert();
}

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