SpringBoot多数据源配置(hive/mysql)

简介

• 在项目实践中，同一个项目可能需要整合多种数据源，把分散到各个数据库、数据表的数据都查询统计出来；
• SpringBoot有默认的数据源配置，本篇博客将整合SpringBoot多数据源配置，包括mysql、hive等，通过jdbctemplate或mybatis进行使用；
• 版本配置(版本可自行选择，这里是博主的测试版本)：jdk1.8，springboot1.5.9，hive2.1.1，hadoop2.7.6，mysql5.7；

 

实践

• 首先，pom文件引入依赖：

UTF-8
UTF-8
1.8
4.3.9.RELEASE



org.springframework.boot
spring-boot-starter-parent
1.5.9.RELEASE





	org.springframework.boot
	spring-boot-starter-web



	org.springframework
	spring-core


	org.springframework
	spring-context





	org.mybatis.spring.boot
	mybatis-spring-boot-starter
	1.3.2




	mysql
	mysql-connector-java




	com.alibaba
	druid
	1.0.29




	org.springframework
	spring-beans




	org.apache.hadoop
	hadoop-common
	2.6.0



	org.apache.hadoop
	hadoop-mapreduce-client-core
	2.6.0



	org.apache.hadoop
	hadoop-mapreduce-client-common
	2.6.0



	org.apache.hadoop
	hadoop-hdfs
	2.6.0



	jdk.tools
	jdk.tools
	1.8
	system
	${JAVA_HOME}/lib/tools.jar



	org.springframework.boot
	spring-boot-configuration-processor
	true




	org.apache.hive
	hive-jdbc
	2.1.1
	
		
			org.eclipse.jetty.aggregate
			*
		
	


	

 

• yml配置多个数据源属性和数据库连接池通用属性：

#配置mybatis
mybatis:
     mapperLocations: classpath:/com/springboot/sixmonth/dao/mapper/**/*.xml
	
#配置多个数据源属性(这里只配置两个，有需要可自行新增)
spring:
    datasource:
      mysqlMain: #mysql主数据源，可关联mybatis
         type: 
           com.alibaba.druid.pool.DruidDataSource 
         url: jdbc:mysql://127.0.0.1:3306/master?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=true&rewriteBatchedStatements=true
         username: root
         password: 1234
         driver-class-name: com.mysql.jdbc.Driver
      hive: #hive数据源
          url: jdbc:hive2://47.100.200.200:9019/default
          type: com.alibaba.druid.pool.DruidDataSource
          username: sixmonth
          password: sixmonth
          driver-class-name: org.apache.hive.jdbc.HiveDriver
      commonConfig: #连接池统一配置，应用到所有的数据源 
         initialSize: 1
         minIdle: 1
         maxIdle: 5
         maxActive: 50
         maxWait: 10000
         timeBetweenEvictionRunsMillis: 10000
         minEvictableIdleTimeMillis: 300000
         validationQuery: select 'x'
         testWhileIdle: true
         testOnBorrow: false
         testOnReturn: false
         poolPreparedStatements: true
         maxOpenPreparedStatements: 20
         filters: stat	

 

• 新建以下相关类：

1. HiveDruidConfig(hive数据库连接池配置)；
2. MysqlMainDruidConfig(mysql主数据源数据连接池配置)；
3. DataSourceCommonProperties(扩展连接池配置属性，应用到所有的数据源)；
4. DataSourceProperties(统一属性控制类，获取配置文件属性)；
5. HiveJdbcBaseDaoImpl(jdbctemplate注入hive数据源)；
6. MysqlMainJdbcBaseDaoImpl(jdbctemplate注入mysql数据源)；

 

•  新建HiveDruidConfig：

package com.springboot.sixmonth.common.config.druid.hive;

import java.sql.SQLException;

import javax.sql.DataSource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.alibaba.druid.pool.DruidDataSource;
import com.springboot.sixmonth.common.config.druid.DataSourceCommonProperties;
import com.springboot.sixmonth.common.config.druid.DataSourceProperties;

/**
 * -配置hive数据源
 * @author sixmonth
 * @Date 2019年5月18日
 *
 */
@Configuration
@EnableConfigurationProperties({DataSourceProperties.class,DataSourceCommonProperties.class})//将配置类注入到bean容器，使ConfigurationProperties注解类生效
public class HiveDruidConfig {

	    private static Logger logger = LoggerFactory.getLogger(HiveDruidConfig.class);

	    @Autowired
	    private DataSourceProperties dataSourceProperties;
	    
	    @Autowired
	    private DataSourceCommonProperties dataSourceCommonProperties;

	    @Bean("hiveDruidDataSource") //新建bean实例
	    @Qualifier("hiveDruidDataSource")//标识
	    public DataSource dataSource(){
	        DruidDataSource datasource = new DruidDataSource();

	        //配置数据源属性
	        datasource.setUrl(dataSourceProperties.getHive().get("url"));
	        datasource.setUsername(dataSourceProperties.getHive().get("username"));
	        datasource.setPassword(dataSourceProperties.getHive().get("password"));
	        datasource.setDriverClassName(dataSourceProperties.getHive().get("driver-class-name"));
	        
	        //配置统一属性
	        datasource.setInitialSize(dataSourceCommonProperties.getInitialSize());
	        datasource.setMinIdle(dataSourceCommonProperties.getMinIdle());
	        datasource.setMaxActive(dataSourceCommonProperties.getMaxActive());
	        datasource.setMaxWait(dataSourceCommonProperties.getMaxWait());
	        datasource.setTimeBetweenEvictionRunsMillis(dataSourceCommonProperties.getTimeBetweenEvictionRunsMillis());
	        datasource.setMinEvictableIdleTimeMillis(dataSourceCommonProperties.getMinEvictableIdleTimeMillis());
	        datasource.setValidationQuery(dataSourceCommonProperties.getValidationQuery());
	        datasource.setTestWhileIdle(dataSourceCommonProperties.isTestWhileIdle());
	        datasource.setTestOnBorrow(dataSourceCommonProperties.isTestOnBorrow());
	        datasource.setTestOnReturn(dataSourceCommonProperties.isTestOnReturn());
	        datasource.setPoolPreparedStatements(dataSourceCommonProperties.isPoolPreparedStatements());
	        try {
	            datasource.setFilters(dataSourceCommonProperties.getFilters());
	        } catch (SQLException e) {
	            logger.error("Druid configuration initialization filter error.", e);
	        }
	        return datasource;
	    }
	    
}

 

• 新建MysqlMainDruidConfig类：

package com.springboot.sixmonth.common.config.druid.mysqlMain;

import java.sql.SQLException;

import javax.sql.DataSource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import com.alibaba.druid.pool.DruidDataSource;
import com.springboot.sixmonth.common.config.druid.DataSourceCommonProperties;
import com.springboot.sixmonth.common.config.druid.DataSourceProperties;

/**
 * -配置mysql主数据源，mysql连接默认主数据源
 * @author sixmonth
 * @Date 2019年5月18日
 *
 */
@Configuration
@EnableConfigurationProperties({DataSourceProperties.class,DataSourceCommonProperties.class})//将配置类注入到bean容器，使ConfigurationProperties注解类生效
public class MysqlMainDruidConfig {

	    private static Logger logger = LoggerFactory.getLogger(MysqlMainDruidConfig.class);

	    @Autowired
	    private DataSourceProperties dataSourceProperties;
	    
	    @Autowired
	    private DataSourceCommonProperties dataSourceCommonProperties;

	    @Primary //标明为主数据源，只能标识一个主数据源，mybatis连接默认主数据源
	    @Bean("mysqlDruidDataSource") //新建bean实例
	    @Qualifier("mysqlDruidDataSource")//标识
	    public DataSource dataSource(){
	        DruidDataSource datasource = new DruidDataSource();

	        //配置数据源属性
	        datasource.setUrl(dataSourceProperties.getMysqlMain().get("url"));
	        datasource.setUsername(dataSourceProperties.getMysqlMain().get("username"));
	        datasource.setPassword(dataSourceProperties.getMysqlMain().get("password"));
	        datasource.setDriverClassName(dataSourceProperties.getMysqlMain().get("driver-class-name"));
	        
	        //配置统一属性
	        datasource.setInitialSize(dataSourceCommonProperties.getInitialSize());
	        datasource.setMinIdle(dataSourceCommonProperties.getMinIdle());
	        datasource.setMaxActive(dataSourceCommonProperties.getMaxActive());
	        datasource.setMaxWait(dataSourceCommonProperties.getMaxWait());
	        datasource.setTimeBetweenEvictionRunsMillis(dataSourceCommonProperties.getTimeBetweenEvictionRunsMillis());
	        datasource.setMinEvictableIdleTimeMillis(dataSourceCommonProperties.getMinEvictableIdleTimeMillis());
	        datasource.setValidationQuery(dataSourceCommonProperties.getValidationQuery());
	        datasource.setTestWhileIdle(dataSourceCommonProperties.isTestWhileIdle());
	        datasource.setTestOnBorrow(dataSourceCommonProperties.isTestOnBorrow());
	        datasource.setTestOnReturn(dataSourceCommonProperties.isTestOnReturn());
	        datasource.setPoolPreparedStatements(dataSourceCommonProperties.isPoolPreparedStatements());
	        try {
	            datasource.setFilters(dataSourceCommonProperties.getFilters());
	        } catch (SQLException e) {
	            logger.error("Druid configuration initialization filter error.", e);
	        }
	        return datasource;
	    }
	    
}

 

• 新建DataSourceCommonProperties类：

package com.springboot.sixmonth.common.config.druid;

import org.springframework.boot.context.properties.ConfigurationProperties;

/**
 * -扩展连接池，通用配置属性，可应用到所有数据源
 * @author sixmonth
 * @Date 2019年5月18日
 *
 */
@ConfigurationProperties(prefix = DataSourceCommonProperties.DS, ignoreUnknownFields = false)
public class DataSourceCommonProperties {
	final static String DS = "spring.datasource.commonConfig";

	private int initialSize = 10;
	private int minIdle;
	private int maxIdle;
	private int maxActive;
	private int maxWait;
	private int timeBetweenEvictionRunsMillis;
	private int minEvictableIdleTimeMillis;
	private String validationQuery;
	private boolean testWhileIdle;
	private boolean testOnBorrow;
	private boolean testOnReturn;
	private boolean poolPreparedStatements;
	private int maxOpenPreparedStatements;
	private String filters;

	private String mapperLocations;
	private String typeAliasPackage;


	//为节省空间，这里省略set和get方法，可自行添加
	
}

 

• 新建DataSourceProperties类：

package com.springboot.sixmonth.common.config.druid;

import java.util.Map;

import org.springframework.boot.context.properties.ConfigurationProperties;

/**
 * -统一属性控制类，获取配置文件属性
 * @author sixmonth
 * @Date 2019年5月18日
 *
 */
@ConfigurationProperties(prefix = DataSourceProperties.DS, ignoreUnknownFields = false)
public class DataSourceProperties {
	final static String DS = "spring.datasource";

	private Map mysqlMain;
	
	private Map hive;
	
	private Map commonConfig;
	
    
	//为节省空间，这里省略set和get方法，可自行添加

}

 

• 新建HiveJdbcBaseDaoImpl类：

package com.springboot.sixmonth.common.config.jdbcConfig;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

/**
 * -注入hive数据源
 * @author sixmonth
 * @Date 2019年5月18日
 *
 */
@Repository
public class HiveJdbcBaseDaoImpl {
	
	private JdbcTemplate jdbcTemplate;

	public JdbcTemplate getJdbcTemplate() {
		return jdbcTemplate;
	}

	@Autowired
	public void setJdbcTemplate(@Qualifier("hiveDruidDataSource") DataSource dataSource) {
		this.jdbcTemplate = new JdbcTemplate(dataSource);
	}
	
}

 

• 新建MysqlMainJdbcBaseDaoImpl类：

package com.springboot.sixmonth.common.config.jdbcConfig;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

/**
 * -注入jdbctemplate
 * @author sixmonth
 * 2018年11月12日
 */
@Repository
public class MysqlMainJdbcBaseDaoImpl {
	
	private JdbcTemplate jdbcTemplate;

	public JdbcTemplate getJdbcTemplate() {
		return jdbcTemplate;
	}

	@Autowired
	public void setJdbcTemplate(@Qualifier("mysqlDruidDataSource") DataSource dataSource) {
		this.jdbcTemplate = new JdbcTemplate(dataSource);
	}
	
}

 

• 新建测试类TestDao，测试jdbcTemplate连接使用mysql：

package com.springboot.sixmonth.dao.jdbcDao.test;

import org.springframework.stereotype.Repository;

import com.springboot.sixmonth.common.config.jdbcConfig.MysqlMainJdbcBaseDaoImpl;

/**
 * -测试jdbc连接
 * @author sixmonth
 * @Date 2019年5月20日
 *
 */
@Repository
public class TestDao extends MysqlMainJdbcBaseDaoImpl{

	/**
	 * -测试类
	 * @return
	 */
	public String test() {
		String sql = "SELECT username from sys_user where username='admin'";
		String param = this.getJdbcTemplate().queryForObject(sql,String.class);
		return param;
	}
	
}	

 

• 新建测试类TestHiveDao，测试jdbcTmplate连接使用hive：

package com.springboot.sixmonth.dao.jdbcDao.test;

import org.springframework.stereotype.Repository;
import com.springboot.sixmonth.common.config.jdbcConfig.HiveJdbcBaseDaoImpl;

/**
 * -测试hive连接
 * @author sixmonth
 * @Date 2019年5月18日
 *
 */
@Repository
public class TestHiveDao extends HiveJdbcBaseDaoImpl{

	/**
	 * 测试获取hive数据库数据信息
	 * @return
	 */
	public String test() {
		String sql = "SELECT name from sixmonth limit 1";
		String param = this.getJdbcTemplate().queryForObject(sql,String.class);
		return param;
	}
	
}	

 

• 使用方法：

	@Autowired
	private TestDao testDao;
	
	@Autowired
	private TestHiveDao testHiveDao;

 

总结

1. SpringBoot可以配置多个mysql数据源，也可以配置多种数据源，比如hive、oracle等，需要可自行添加；
2. 在整合mybatis的时候需要标明主数据源，默认使用数据源；
3. 实践是检验认识真理性的唯一标准，自己动手，丰衣足食~~