springboot项目配置多数据源

#从数据库配置，数据库的配置 以spring.datasource.myProjectOne前缀，需要配置驱动程序名称。
spring.datasource.myProjectOne.driver-class-name = com.mysql.jdbc.Driver
spring.datasource.myProjectOne.url = jdbc:mysql://IP:3306/databaseName?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&autoReconnect=true&allowMultiQueries=true&useSSL=false
spring.datasource.myProjectOne.username = username
spring.datasource.myProjectOne.password = password

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
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.transaction.support.TransactionTemplate;

import javax.sql.DataSource;

/**
 * 数据源配置
 */
@Configuration
@MapperScan(basePackages = "com.my.projectOne.mapper", sqlSessionFactoryRef = "myProjectOneDBSessionFactory")
public class OneDBConfig {

    @Bean(name = "myProjectOneDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.myProjectOne")
    @Primary
    public DataSource fundsDataSource() {
        return DataSourceBuilder.create().build();
    }


    @Bean(name = "myProjectOneDBSessionFactory")
    @Primary
    public SqlSessionFactory sqlSessionFactoryBean(@Qualifier("myProjectOneDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        //关键：mybatis文件的目录需要区分开来
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis.myProjectOne/*.xml"));   //子模块中的类路径 mybatis.myProjectOne
        sqlSessionFactoryBean.setDataSource(dataSource);
        return sqlSessionFactoryBean.getObject();
    }

    @Bean(name = "myProjectOneTransactionManager")
    @Primary
    public DataSourceTransactionManager transactionManager(@Qualifier("myProjectOneDataSource") DataSource dataSource) {
        DataSourceTransactionManager transactionManager = new DataSourceTransactionManager();
        transactionManager.setDataSource(dataSource);
        return transactionManager;
    }

    @Bean(name = "myProjectOneTransactionTemplate")
    @Primary
    public TransactionTemplate transactionTemplate(@Qualifier("myProjectOneTransactionManager") DataSourceTransactionManager transactionManager) {
        TransactionTemplate transactionTemplate = new TransactionTemplate(transactionManager);
        return transactionTemplate;
    }
}

主数据库配置,数据库的配置 以spring.datasource前缀，需要配置驱动程序名称。
spring.datasource.driver-class-name = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://IP:3306/databaseName?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&autoReconnect=true&allowMultiQueries=true&useSSL=false
spring.datasource.username = username
spring.datasource.password = password

import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

/**
 * 数据源配置
 */
@Configuration
@MapperScan(basePackages = "com.my.projectTwo.mapper", sqlSessionFactoryRef = "myProjectTwodbSessionFactory")
public class TwoDBConfig {

    @Bean(name = "myProjectTwodbDataSource")
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource myProjectTwoDataSource() {
        return DataSourceBuilder.create().build();
    }


    @Bean(name = "myProjectTwodbSessionFactory")
    public SqlSessionFactory sqlSessionFactoryBean(@Qualifier("myProjectTwodbDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/*.xml"));
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setPlugins(new Interceptor[]{new ResultDecryptSetInterceptor()});
        return sqlSessionFactoryBean.getObject();
    }
}