Spring Boot 2.x multiple datasource and jdbctemplate - spring-boot

Question

I would like to use Multiple Datasources and JdbcTemplates in my Spring Boot 2.1.3 Application.
I tried all solution advices on Stackoverflow and other web sites. But in my application;
when I try to create a Jdbctemplate instance with specified datasource, it sets null for datasources.
I couldn't understand where the problem is? Hikari Pool starts after application ready event. How to set a datasource of jdbcTemplate after initializations of datasources ?
Here is my code examples:
#Bean(name = "iybsDS")
#ConfigurationProperties(prefix = "datasource.iybs")
public DataSource iybsDSdataSource() {
return DataSourceBuilder.create().build();
}
#Bean(name = "diyihDS")
#ConfigurationProperties(prefix = "datasource.diyih")
public DataSource diyihDSdataSource() {
return DataSourceBuilder.create().build();
}
JdbcTemplate Config:
#Configuration
public class JdbcTemplateConfig {
#Bean(name = "diyihJdbcTemplate")
public JdbcTemplate CreateDiyihJdbcTemplate(#Qualifier("diyihDS") DataSource diyihDS) {
return new JdbcTemplate(diyihDS);
}
}
Trying for print datasource information on console:
#SpringBootApplication
public class WebservicesApplication implements ApplicationRunner {
#Autowired
#Qualifier("diyihDS")
DataSource diyihDS;
public static void main(String[] args) {
SpringApplication.run(WebservicesApplication.class, args);
}
#Override
public void run(ApplicationArguments args) throws Exception {
System.out.println(diyihDS);
}
}
Output is :
2019-03-07 14:27:20.026 INFO 20100 --- [ main] t.g.a.WebservicesApplication : Started WebservicesApplication in 4.724 seconds (JVM running for 5.594)
HikariDataSource (null)
...
2019-03-07 14:27:20.739 INFO 20100 --- [on(4)-127.0.0.1] com.zaxxer.hikari.HikariDataSource : DiyihPool - Starting...
2019-03-07 14:27:20.817 INFO 20100 --- [on(4)-127.0.0.1] com.zaxxer.hikari.HikariDataSource : DiyihPool - Start completed.
When I tried to send a request to web service in my application, I got error because datasource of JdbcTemplate is wrong or null.
I GOT MY MISTAKE:
I was trying just one JdbcTemplate instance. I created all needed jdbcTemplates and set a Primary one of them. Then each service had own JdbcTemplate and Datasource.

Answer 1

Try adding DataSourceProperties Bean and use it:
#Bean
#Primary
#ConfigurationProperties("datasource.diyih")
public DataSourceProperties diyihDataSourceProperties() {
return new DataSourceProperties();
}
#Bean(name="diyihDS")
#Primary
#ConfigurationProperties("spring.datasource.diyih")
public DataSource diyihDataSource() {
return diyihDataSourceProperties().initializeDataSourceBuilder().build();
}