springBoot+orcal+mybatisPlus+多数据源

项目要用到多数据源所以学习了一下,自己看了很多文章最后终于成功,这里记录主要部分以便以后查阅(pom依赖文件不贴了).
一.配置文件application.yml里面添加数据源
注意缩进和空格一定要仔细

二.两个数据库的dao层和mapper层要放在自己的文件夹里面便于指定各自的数据源

三.创建各自数据源配置的实体类用来注入到spring

数据源一的实体类:DefaultDataSourceConfig.java

package com.cic.common.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.session.SqlSessionFactory;
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;
import java.sql.SQLException;

/**

• @author GW
  */
  @Configuration
  @MapperScan(value = {"com.cic.common.mapper.foundationmapper."}, sqlSessionFactoryRef = "sqlSessionFactory1")
  public class DefaultDataSourceConfig {

  @Value("${spring.datasource.foundation.driver-class-name}")
  private String driverClass;
  @Value("${spring.datasource.foundation.url}")
  private String url;
  @Value("${spring.datasource.foundation.username}")
  private String username;
  @Value("${spring.datasource.foundation.password}")
  private String password;
  @Value("${spring.datasource.tomcat.initial-size}")
  private int initialSize;
  @Value("${spring.datasource.tomcat.min-idle}")
  private int minIdle;
  @Value("${spring.datasource.tomcat.max-active}")
  private int maxActive;
  @Value("${spring.datasource.tomcat.max-wait}")
  private int maxWait;

  @Bean(name = "dataSource")
  @Primary
  public DataSource dataSource() throws SQLException {
  DruidDataSource druidDataSource = new DruidDataSource();
  druidDataSource.setUsername(username);
  druidDataSource.setPassword(password);
  druidDataSource.setUrl(url);
  druidDataSource.setFilters("stat,wall");
  druidDataSource.setInitialSize(initialSize);
  druidDataSource.setMinIdle(minIdle);
  druidDataSource.setMaxActive(maxActive);
  druidDataSource.setMaxWait(maxWait);
  druidDataSource.setUseGlobalDataSourceStat(true);
  druidDataSource.setDriverClassName(driverClass);
  return druidDataSource;
  }

  @Bean
  @Primary
  public SqlSessionFactory sqlSessionFactory1(@Qualifier("dataSource") DataSource dataSource) throws Exception {
  MybatisSqlSessionFactoryBean bean = new MybatisSqlSessionFactoryBean();
  bean.setDataSource(dataSource);
  bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:/mapper/foundation/.xml"));
  return bean.getObject();
  }

  @Bean
  @Primary
  public DataSourceTransactionManager dataSourceTransactionManager1(@Qualifier("dataSource") DataSource dataSource){
  return new DataSourceTransactionManager(dataSource);
  }

  @Bean
  @Primary
  public SqlSessionTemplate sqlSessionTemplate1(@Qualifier("sqlSessionFactory1") SqlSessionFactory sqlSessionFactory){
  return new SqlSessionTemplate(sqlSessionFactory);
  }
  }

数据源二实体类:UserResourceDataSourceConfig.java

package com.cic.common.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import lombok.Data;
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.boot.context.properties.ConfigurationProperties;
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 org.springframework.stereotype.Component;

import javax.sql.DataSource;
import java.sql.SQLException;

/**

• @author GW
  */
  @Data
  @Configuration
  @MapperScan(basePackages = {"com.cic.common.mapper.usermapper."}, sqlSessionFactoryRef = "sqlSessionFactory2")
  public class UserResourceDataSourceConfig {

  @Value("${spring.datasource.user.driver-class-name}")
  private String driverClass;
  @Value("${spring.datasource.user.url}")
  private String url;
  @Value("${spring.datasource.user.username}")
  private String username;
  @Value("${spring.datasource.user.password}")
  private String password;
  @Value("${spring.datasource.tomcat.initial-size}")
  private int initialSize;
  @Value("${spring.datasource.tomcat.min-idle}")
  private int minIdle;
  @Value("${spring.datasource.tomcat.max-active}")
  private int maxActive;
  @Value("${spring.datasource.tomcat.max-wait}")
  private int maxWait;

  @Bean(name = "userDataSource")
  public DataSource userDataSource() throws SQLException {
  DruidDataSource druidDataSource = new DruidDataSource();
  druidDataSource.setUsername(username);
  druidDataSource.setPassword(password);
  druidDataSource.setUrl(url);
  druidDataSource.setFilters("stat,wall");
  druidDataSource.setInitialSize(initialSize);
  druidDataSource.setMinIdle(minIdle);
  druidDataSource.setMaxActive(maxActive);
  druidDataSource.setMaxWait(maxWait);
  druidDataSource.setUseGlobalDataSourceStat(true);
  druidDataSource.setDriverClassName(driverClass);
  return druidDataSource;
  }

  @Bean
  public SqlSessionFactory sqlSessionFactory2(@Qualifier("userDataSource") DataSource userDataSource) throws Exception {
  MybatisSqlSessionFactoryBean bean = new MybatisSqlSessionFactoryBean();
  bean.setDataSource(userDataSource);
  bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:/mapper/usermapper/.xml"));
  return bean.getObject();
  }

  @Bean
  public DataSourceTransactionManager dataSourceTransactionManager2(@Qualifier("userDataSource") DataSource userDataSource){
  return new DataSourceTransactionManager(userDataSource);
  }

  @Bean
  public SqlSessionTemplate sqlSessionTemplate2(@Qualifier("sqlSessionFactory2") SqlSessionFactory sqlSessionFactory){
  return new SqlSessionTemplate(sqlSessionFactory);
  }

}
对数据源实体类注解的一点解释说明