Spring boot 2 IllegalArgumentException: Property 'driverClassName' must not be empty - spring-boot

Question

I am trying to establish 2 database connections in spring boot 2 app. I am getting below error:
java.lang.IllegalArgumentException: Property 'driverClassName' must not be empty
Here is my configuration on Primary db
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
entityManagerFactoryRef = "myEntityManagerFactory",
basePackages = {"com.cmp.myapp.repository"})
public class PrimDBConfig {
#Primary
#Bean(name = "primaryDataSource")
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
#PersistenceContext(unitName = "primdb")
#Primary
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(
EntityManagerFactoryBuilder builder,
#Qualifier("primaryDataSource") DataSource dataSource) {
return builder
.dataSource(dataSource)
.packages("com.cmp.myapp.dto")
.persistenceUnit("primdb")
.build();
}
#Primary
#Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager(
#Qualifier("myEntityManagerFactory") EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
}
Here is the secondary db connection
#Configuration
public class SecDBConfig {
#Autowired
Environment env;
#Bean(name = "secDataSource")
#ConfigurationProperties(prefix = "secondary.datasource")
public DataSource wiseDataSource() {
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setUrl(env.getProperty("secondary.datasource.jdbc-url"));
ds.setDriverClassName(env.getProperty("secondary.datasource.driverClassName"));
ds.setUsername(env.getProperty("secondary.datasource.username"));
ds.setPassword(env.getProperty("secondary.datasource.password"));
return ds;
}
}
My application.properties file as below:
spring.datasource.jdbc-url=jdbc:sqlserver://xxx
spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.username=xxxx
spring.datasource.password=xxxx
spring.datasource.validation-query=select 1
spring.datasource.testOnBorrow=true
secondary.datasource.jdbc-url=jdbc:as400://xxxxxx;
secondary.datasource.driverClassName=com.ibm.as400.access.AS400JDBCDriver
secondary.datasource.username=xxxxx
secondary.datasource.password=xxxxxx
secondary.datasource.testOnBorrow=true
secondary.datasource.validation-query=select 1 from sysibm.sysdummy1
May I know what I'm doing wrong here, please advice. Thanks in advance

Answer 1

One of the reasons I can think of is, you have added this prefix
#ConfigurationProperties(prefix = "secondary.datasource")
Then accessing driverClassName using complete path
ds.setDriverClassName(env.getProperty("secondary.datasource.driverClassName"));
I think you should remove the prefix and try accessing.
This blog may also help you. https://howtodoinjava.com/spring-boot2/datasource-configuration/