title: Properties(other than username,pasword,url) are not getting loaded using @ConfigurationProperties
body: <p>I have two datsources but I am only able to load username, password and url. Other properties like poolPingEnabled, poolPingQuery, poolPingConnectionsNotUsedFor, poolMaximumActiveConnections.</p>
  
  <p>Note: My code flow is working and I am able to connect to the two DBs. My main issue is why the other properties are not getting loaded. I couldn't find any example which helps to add the properties I mentioned above.</p>
  
  <pre><code>@Configuration
      public class DatabaseConfiguration {
    public static final String GDPR_DATASOURCE = "gdpr";
    public static final String CONFIG_DATASOURCE = "config";
  
    @Bean(name = GDPR_DATASOURCE)
    @ConfigurationProperties(prefix = "gdpr.jdbc")
    public DataSource gdprDataSource() {
      return DataSourceBuilder.create().build();
    }
  
    @Bean(name = CONFIG_DATASOURCE)
    @ConfigurationProperties(prefix = "config.jdbc")
    public DataSource configDataSource() {
      return DataSourceBuilder.create().build();
    }
  }
  </code></pre>
  
  <p>Application.properties: username and password here are only examples. In my case url,username and password everything is different.</p>
  
  <pre><code>spring.datasource.initialize=false
  gdpr.jdbc.url=jdbc:mysql://localhost:3306/gdpr
  gdpr.jdbc.driverClassName=com.mysql.jdbc.Driver
  gdpr.jdbc.username=root
  gdpr.jdbc.password=local
  gdpr.jdbc.poolPingEnabled=true
  gdpr.jdbc.poolPingQuery=SELECT 1
  gdpr.jdbc.poolPingConnectionsNotUsedFor=9000
  gdpr.jdbc.poolMaximumActiveConnections=25
  
  config.jdbc.url=jdbc:mysql://localhost:3306/config
  config.jdbc.driverClassName=com.mysql.jdbc.Driver
  config.jdbc.username=root
  config.jdbc.password=local
  config.jdbc.poolPingEnabled=true
  config.jdbc.poolPingQuery=SELECT 1
  config.jdbc.poolPingConnectionsNotUsedFor=10000
  config.jdbc.poolMaximumActiveConnections=25
  </code></pre>
  
  <p>MyBatisConfiguration.java : Here I am creating two SqlSessionFactoryBean. These are being used for contacting the individual DBs.</p>
  
  <pre><code>@Configuration
  public class MyBatisConfiguration {
    private static final String GDPR_SESSION_FACTORY = "gdprSessionFactory";
    private static final String CONFIG_SESSION_FACTORY = "configSessionFactory";
  
    /** This method is used for generating SqlSessionFactoryBean for gdpr DB.
     * @param gdprDataSource gdpr datasource with configuration properties loaded
     * @return sqlSessionFactoryBean for gdpr DB
     */
    @Bean(name = GDPR_SESSION_FACTORY, destroyMethod = "")
    @Primary
    public SqlSessionFactoryBean gdprSqlSessionFactory(
        @Named(DatabaseConfiguration.GDPR_DATASOURCE) final DataSource gdprDataSource)
    throws Exception {
      final SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
      sqlSessionFactoryBean.setDataSource(gdprDataSource);
      SqlSessionFactory sqlSessionFactory;
      sqlSessionFactory = sqlSessionFactoryBean.getObject();
      sqlSessionFactory.getConfiguration().addMapper(GdprDatabaseMapper.class);
      PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
      sqlSessionFactoryBean.setMapperLocations(resolver.getResources(
      "classpath:GdprDatabaseMapper.xml"));
      return sqlSessionFactoryBean;
    }
  
    /** This method creates MapperFactory for SqlSessionFactoryBean GDPR_SESSION_FACTORY.
     * @param sqlSessionFactoryBean gdpr SqlSessionFactoryBean
     * @return MapperFactoryBean for SqlSessionFactoryBean
     */
    @Bean
    public MapperFactoryBean&lt;GdprDatabaseMapper&gt; gdprMapper(
    @Named(GDPR_SESSION_FACTORY) final SqlSessionFactoryBean sqlSessionFactoryBean)
    throws Exception {
      MapperFactoryBean&lt;GdprDatabaseMapper&gt; factoryBean =
      new MapperFactoryBean&lt;&gt;(GdprDatabaseMapper.class);
      factoryBean.setSqlSessionFactory(sqlSessionFactoryBean.getObject());
      return factoryBean;
    }
  
    /** This method is used for generating SqlSessionFactoryBean for config DB.
     * @param configDataSource config datasource with configuration properties loaded
     * @return sqlSessionFactoryBean for config DB
     */
    @Bean(name = CONFIG_SESSION_FACTORY, destroyMethod = "")
    public SqlSessionFactoryBean configSqlSessionFactory(
    @Named(DatabaseConfiguration.CONFIG_DATASOURCE) final DataSource configDataSource)
    throws Exception {
      final SqlSessionFactoryBean sqlSessionFactoryBean =
      new SqlSessionFactoryBean();
      sqlSessionFactoryBean.setDataSource(configDataSource);
      final SqlSessionFactory sqlSessionFactory = sqlSessionFactoryBean.getObject();
      sqlSessionFactory.getConfiguration().addMapper(ConfigDatabaseMapper.class);
  PathMatchingResourcePatternResolver resolver = new     PathMatchingResourcePatternResolver();
      sqlSessionFactoryBean.setMapperLocations(resolver.getResources(
      "classpath:ConfigDatabaseMapper.xml"));
      return sqlSessionFactoryBean;
    }
  
    /** This method creates MapperFactory for SqlSessionFactoryBean CONFIG_SESSION_FACTORY.
     * @param sqlSessionFactoryBean config SqlSessionFactoryBean
     * @return MapperFactoryBean for SqlSessionFactoryBean
     */
    @Bean
    public MapperFactoryBean&lt;ConfigDatabaseMapper&gt; configMapper(
    @Named(CONFIG_SESSION_FACTORY) final SqlSessionFactoryBean sqlSessionFactoryBean)
    throws Exception {
  MapperFactoryBean&lt;ConfigDatabaseMapper&gt; factoryBean =
      new MapperFactoryBean&lt;&gt;(ConfigDatabaseMapper.class);
  factoryBean.setSqlSessionFactory(sqlSessionFactoryBean.getObject());
  return factoryBean;
    }
  }
  </code></pre>