隨記——多數據源配置方式

隨記——多數據源配置方式（springboot整合mybatis）

項目依賴

	<dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-dbcp2</artifactId>
        <version>2.5.0</version>
    </dependency>

    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>2.0.0</version>
    </dependency>

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

springboot配置文件

mapping文件

spring:
  datasource:
    nt-cultural-tourism:
      url: jdbc:mysql://ip:port/datasuource_name1?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false
      username: root
      password: 123456
      driver-class-name: com.mysql.cj.jdbc.Driver
      type: org.apache.commons.dbcp2.BasicDataSource
      dbcp2:
        max-wait-millis: 10000
        min-idle: 5
        initial-size: 5
        max-total: 300
    nt-emergency:
      url: jdbc:mysql://ip:port/datasuource_name2?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false
      username: root
      password: 123456
      driver-class-name: com.mysql.cj.jdbc.Driver
      type: org.apache.commons.dbcp2.BasicDataSource
      dbcp2:
        max-wait-millis: 10000
        min-idle: 5
        initial-size: 5
        max-total: 300
    nt-natural-resources:
      url: jdbc:mysql://ip:port/datasuource_name3?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false
      username: root
      password: 123456
      driver-class-name: com.mysql.cj.jdbc.Driver
      type: org.apache.commons.dbcp2.BasicDataSource
      dbcp2:
        max-wait-millis: 10000
        min-idle: 5
        initial-size: 5
        max-total: 300

Java配置類

目錄格式配置類

NtCulturalTourismConfiguration.java配置

import com.alibaba.druid.pool.DruidDataSource;
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.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.dataojo.nantong.mapper.NtCulturalTourismMapper", sqlSessionTemplateRef  = "nt_cultural_tourism_SqlSessionTemplate")
public class NtCulturalTourismConfiguration {
    @Value("${spring.datasource.nt-cultural-tourism.driver-class-name}")
    private String driverClassName;
    @Value("${spring.datasource.nt-cultural-tourism.url}")
    private String url;
    @Value("${spring.datasource.nt-cultural-tourism.username}")
    private String username;
    @Value("${spring.datasource.nt-cultural-tourism.password}")
    private String password;
    @Bean(name = "nt_cultural_tourism_DataSource")
    @Primary
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(this.driverClassName);
        dataSource.setUrl(this.url);
        dataSource.setUsername(this.username);
        dataSource.setPassword(this.password);
        return dataSource;
    }
    @Bean(name = "nt_cultural_tourism_SqlSessionFactory")
    @Primary
    public SqlSessionFactory sqlSessionFactory(@Qualifier("nt_cultural_tourism_DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mybatis/NtCulturalTourismMappering/*.xml"));
        org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
        bean.setConfiguration(configuration);
        return bean.getObject();
    }
    @Bean(name = "nt_cultural_tourism_TransactionManager")
    @Primary
    public DataSourceTransactionManager transactionManager(@Qualifier("nt_cultural_tourism_DataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }
    @Bean(name = "nt_cultural_tourism_SqlSessionTemplate")
    @Primary
    public SqlSessionTemplate sqlSessionTemplate(@Qualifier("nt_cultural_tourism_SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

NtEmergencyConfiguration.java配置

import com.alibaba.druid.pool.DruidDataSource;
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.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.dataojo.nantong.mapper.NtEmergencyMapper", sqlSessionTemplateRef  = "nt_emergency_SqlSessionTemplate")
public class NtEmergencyConfiguration {
    @Value("${spring.datasource.nt-emergency.driver-class-name}")
    private String driverClassName;
    @Value("${spring.datasource.nt-emergency.url}")
    private String url;
    @Value("${spring.datasource.nt-emergency.username}")
    private String username;
    @Value("${spring.datasource.nt-emergency.password}")
    private String password;
    @Bean(name = "nt_emergency_DataSource")
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(this.driverClassName);
        dataSource.setUrl(this.url);
        dataSource.setUsername(this.username);
        dataSource.setPassword(this.password);
        return dataSource;
    }
    @Bean(name = "nt_emergency_SqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(@Qualifier("nt_emergency_DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mybatis/NtEmergencyMappering/*.xml"));
        org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
        bean.setConfiguration(configuration);
        return bean.getObject();
    }
    @Bean(name = "nt_emergency_TransactionManager")
    public DataSourceTransactionManager transactionManager(@Qualifier("nt_emergency_DataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }
    @Bean(name = "nt_emergency_SqlSessionTemplate")
    public SqlSessionTemplate sqlSessionTemplate(@Qualifier("nt_emergency_SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

NtNaturalResourcesConfiguration.java配置

import com.alibaba.druid.pool.DruidDataSource;
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.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.dataojo.nantong.mapper.NtNaturalResourcesMapper", sqlSessionTemplateRef  = "nt_natural_resources_SqlSessionTemplate")
public class NtNaturalResourcesConfiguration {
    @Value("${spring.datasource.nt-natural-resources.driver-class-name}")
    private String driverClassName;
    @Value("${spring.datasource.nt-natural-resources.url}")
    private String url;
    @Value("${spring.datasource.nt-natural-resources.username}")
    private String username;
    @Value("${spring.datasource.nt-natural-resources.password}")
    private String password;
    @Bean(name = "nt_natural_resources_DataSource")
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(this.driverClassName);
        dataSource.setUrl(this.url);
        dataSource.setUsername(this.username);
        dataSource.setPassword(this.password);
        return dataSource;
    }
    @Bean(name = "nt_natural_resources_SqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(@Qualifier("nt_natural_resources_DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mybatis/NtNaturalResourcesMappering/*.xml"));
        org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
        bean.setConfiguration(configuration);
        return bean.getObject();
    }
    @Bean(name = "nt_natural_resources_TransactionManager")
    public DataSourceTransactionManager transactionManager(@Qualifier("nt_natural_resources_DataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }
    @Bean(name = "nt_natural_resources_SqlSessionTemplate")
    public SqlSessionTemplate sqlSessionTemplate(@Qualifier("nt_natural_resources_SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

至此多數據源配置已完成