Question

我使用的是Spring boot 1.5.2版，我有一个用例，我需要在应用程序中配置2个数据源。我已经成功地将应用程序连接到2个数据库，但是我无法为它们设置连接池属性。

这是配置类：

@Configuration
public class DataSourceConfig {

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

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

在调试DataSourceBuilder时，我可以看到它正在实例化org.apache.tomcat.jdbc.pool.DataSource类型的bean，这是我想要的，但是DataSource对象中的poolProperties字段总是包含一些默认属性而不是我的意图。

这是我的application.yml：

spring:
  profiles: dev

  datasource:
    one:
        url: jdbc:mariadb://localhost:3306/one
        username: user1
        password: password
        driverClassName: org.mariadb.jdbc.Driver
        initialize: true
        tomcat:
            testOnBorrow: true
            validation-query: SELECT 1
            testWhileIdle: true
            continueOnError: true
            initialSize: 2
            timeBetweenEvictionRunsMillis: 5000
            minEvictableIdleTimeMillis: 5000
            minIdle: 2
            maxIdle: 3
            maxActive: 30
    two:
        url: jdbc:mariadb://localhost:3306/two
        username: user1
        password: password
        driverClassName: org.mariadb.jdbc.Driver
        initialize: true
        tomcat:
            testOnBorrow: true
            validation-query: SELECT 1
            testWhileIdle: true
            continueOnError: true
            initialSize: 2
            timeBetweenEvictionRunsMillis: 5000
            minEvictableIdleTimeMillis: 5000
            minIdle: 2
            maxIdle: 3
            maxActive: 30

我错过了什么吗？ DataSourceBuilder是否能够查找以这种方式配置的池属性？使用我想要的池属性配置2个数据源的最佳方法是什么？

Answer 1

首先，您应该忽略DataSourceAutoConfiguration：

@SpringBootApplication(exclude = {
        DataSourceAutoConfiguration.class
})
public class Main{
    public static void main(String[] args) {
        SpringApplication.run(Main.class, args);
    }
}

然后，将您的配置保留在您的问题中。如果您将mybatis用作DAO Framework，则应添加以下配置：

@Configuration
@MapperScan(basePackages = {"mapperpackage1"}, sqlSessionFactoryRef = "sqlSessionFactory1")
public class MybatisDbAConfig {

    @Autowired
    @Qualifier("oneDataSource")
    private DataSource ds1;


    @Bean
    public SqlSessionFactory sqlSessionFactory1() throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(ds1); 

        return factoryBean.getObject();

    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate1() throws Exception {
        SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactory1()); 
        return template;
    }
}

同样地：

@Configuration
@MapperScan(basePackages = {"mapperpackage2"}, sqlSessionFactoryRef = "sqlSessionFactory2")
public class MybatisDbAConfig2 {

    @Autowired
    @Qualifier("twoDataSource")
    private DataSource ds2;


    @Bean
    public SqlSessionFactory sqlSessionFactory2() throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(ds2); 

        return factoryBean.getObject();

    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate2() throws Exception {
        SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactory2()); 
        return template;
    }
}

Spring引导 - 多个DataSource

1 个答案: