配置数据库信息

• 因为要用到Druid读取配置，所以将druid提到了first后面

spring:
  datasource:
    first:
      druid:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.sap.db.jdbc.Driver
        url: jdbc:sap://
        username: 
        password:
        initialSize: 5
        minIdle: 5
        maxActive: 20
        # 配置获取连接等待超时的时间
        maxWait: 60000
        # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
        timeBetweenEvictionRunsMillis: 60000
        # 配置一个连接在池中最小生存的时间，单位是毫秒
        minEvictableIdleTimeMillis: 300000
        validationQuery: SELECT 1 FROM DUMMY
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        # 打开PSCache，并且指定每个连接上PSCache的大小
        poolPreparedStatements: true
        maxPoolPreparedStatementPerConnectionSize: 20
        # 通过connectProperties属性来打开mergeSql功能；慢SQL记录
        connectionProperties: druid.stat.mergeSql\=true;druid.stat.slowSqlMillis\=5000
    second:
      druid:
        type: com.alibaba.druid.pool.DruidDataSource
        url: jdbc:oracle:
        username: 
        password: 
        initialSize: 5
        minIdle: 5
        maxActive: 20
        # 配置获取连接等待超时的时间
        maxWait: 60000
        # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
        timeBetweenEvictionRunsMillis: 60000
        # 配置一个连接在池中最小生存的时间，单位是毫秒
        minEvictableIdleTimeMillis: 300000
        validationQuery: SELECT 1 FROM DUAL
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        # 打开PSCache，并且指定每个连接上PSCache的大小
        poolPreparedStatements: true
        maxPoolPreparedStatementPerConnectionSize: 20
        # 通过connectProperties属性来打开mergeSql功能；慢SQL记录
        connectionProperties: druid.stat.mergeSql\=true;druid.stat.slowSqlMillis\=5000

写两个Dataconfig文件，通过MapperScan扫描来指定那些用哪个数据源

@Configuration
@MapperScan(basePackages = {"com.xxxx.xx.xx.xxxx"},sqlSessionFactoryRef = "SqlSessionFactory1")
public class DataSource1Config {

    @Bean(name = "Properties1")
    @ConfigurationProperties(prefix = "spring.datasource.first")
    public Properties Properties1(){
        return new Properties();
    }
    /*
    * 创建数据源datasource
    * */
    @Bean(name = "DataSource1")
    @Primary
    public DruidDataSource masterDataSource(@Qualifier("Properties1")Properties properties) {
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.configFromPropety(properties);
        try {
            druidDataSource.init();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return druidDataSource;
    }

    /**
    * 创建sqlsessionfactory
    */
    @Bean(name = {"SqlSessionFactory1"})
    @Primary
    public SqlSessionFactory Hana1SqlSessionFactory(@Qualifier("DataSource1") DruidDataSource druidDataSource) throws Exception {
      final  SqlSessionFactoryBean sessionFactoryBean=new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(druidDataSource);

        //分页插件
        Interceptor interceptor = new PageInterceptor();
        Properties properties = new Properties();
        properties.setProperty("helperDialect", "hsqldb");
        properties.setProperty("offsetAsPageNum", "true");
        properties.setProperty("rowBoundsWithCount", "true");
        properties.setProperty("reasonable", "true");
        properties.setProperty("supportMethodsArguments","true");
        properties.setProperty("params","pageNum=pageNum;pageSize=pageSize;");
        interceptor.setProperties(properties);
        sessionFactoryBean.setPlugins(new Interceptor[] {interceptor});

        return sessionFactoryBean.getObject();
    }

    /*
    * 创建事务DataSourceTransactionManager
    * */
    @Bean(name = {"TransactionManager1"})
    @Primary
    public DataSourceTransactionManager Hana1TransactionManager(){
        return new DataSourceTransactionManager(masterDataSource(Properties1()));
    }

    @Bean(name = {"SqlSessionTemplate1"})
    @Primary
    public SqlSessionTemplate Hana1SqlSessionTemplate(@Qualifier("SqlSessionFactory1") SqlSessionFactory sqlSessionFactory){
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}

第二个dataconfig也是一样写，就不重复上代码了。

最后需要注意在module的pom文件下加上依赖并将druid.jar放到resource下

<dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.19</version>
            <scope>system</scope>
            <systemPath>${project.basedir}/src/main/resources/lib/druid-1.1.19.jar</systemPath>
</dependency>

下面这是我的jar目录

druid.jar

如果报如下错就是上面的jar和pom没有配好，会在druidDatasource.init();的时候报错。

java.sql.SQLException: unknown jdbc driver : jdbc:sap://xx.xx.xx

另外我没有把依赖都写上，也很简单，我懒得写了。