Springboot簡單配置多數據源

1.先排除掉springboot的數據源自動配置項

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class,
		DataSourceTransactionManagerAutoConfiguration.class,
		JdbcTemplateAutoConfiguration.class})

2.application.properties添加數據庫配置

#main datasource config
main.datasource.url=jdbc:mysql://localhost:3306/tysql?serverTimezone=UTC
main.datasource.username=root
main.datasource.password=
main.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

#sub datasource config
sub.datasource.url=jdbc:mysql://localhost:3306/testsql?serverTimezone=UTC
sub.datasource.username=root
sub.datasource.password=
sub.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

3.新增多數據源配置

 

@Configuration
public class MyDatasource {

    @Bean
    @ConfigurationProperties("main.datasource")
    public DataSourceProperties mainDataSourceProperties(){
        return new DataSourceProperties();
    }

    @Bean
    @ConfigurationProperties("sub.datasource")
    public DataSourceProperties subDataSourceProperties(){
        return new DataSourceProperties();
    }

    @Bean
    public DataSource mainDataSource() {
        DataSourceProperties dataSourceProperties = mainDataSourceProperties();
        System.out.println("main datasource url: "+dataSourceProperties.getUrl());
        return dataSourceProperties.initializeDataSourceBuilder().build();
    }

    @Bean
    public DataSource subDataSource() {
        DataSourceProperties dataSourceProperties = subDataSourceProperties();
        System.out.println("sun datasource url: "+dataSourceProperties.getUrl());
        return dataSourceProperties.initializeDataSourceBuilder().build();
    }
}

4.單元測試看一下配置是否成功

@RunWith(SpringRunner.class)
@SpringBootTest
class HelloSpringApplicationTests {
    @Autowired
    @Qualifier("mainDataSource")
    private DataSource mainDataSource;

    @Autowired
    @Qualifier("subDataSource")
    private DataSource subDataSource;

    @Test
    void dataSourceTest() throws Exception {
        JdbcTemplate mainJdbcTemplate = new JdbcTemplate(mainDataSource);
        List<?> mainList = mainJdbcTemplate.queryForList("select * from student");
		System.out.println(mainList);

		JdbcTemplate subJdbcTtemplate = new JdbcTemplate(subDataSource);
		List<?> subList = subJdbcTtemplate.queryForList("select * from tbl_user");
		System.out.println(subList);
    }

}

分別測試讀取main和sub兩個數據庫的表數據，讀取成功。

 

整個多數據源的配置就此結束！