SpringBoot DataSourceBuilder Sınıfı

Giriş
Şu satırı dahil ederiz

import org.springframework.boot.jdbc.DataSourceBuilder;

Açıklaması şöyle

DataSourceBuilder is a utility or convenience class in spring boot that provides a convenient way to create and configure a datasource.

Using this class, we can create a datasource in using connection parameters, such as database URL, username, and password.

Örnek

Şöyle yaparız

@Configuration
public class DataSourceConfig {
  @Bean
  public DataSource dataSource() {
    return DataSourceBuilder
      .create()
      .url("jdbc:mysql://localhost/appdb")
      .username("user")
      .password("password")
      .driverClassName("com.mysql.jdbc.Driver")
      .build();
  }
}

Açıklaması şöyle

Note that we are marking the class with @Configuration annotation, which marks it as source of beans.

And in the configuration class, we expose a bean of type DataSource.

Örnek

Şöyle yaparız.

@Bean(name = "dataSource")
public DataSource getDataSource() {
  DataSource dataSource = DataSourceBuilder
    .create()
    .username("ALERTTEST")
    .password("ALERTTEST")
    .url("jdbc:oracle:thin:@192.168.0.198:1521:FCUBS")  
    .driverClassName("oracle.jdbc.OracleDriver")
    .build();
  return dataSource;
}

Diğer
Bu sınıfı yaratmak için DataSourceProperties kullanılabilir.

Örnek
Şöyle yaparız.

# first db
spring.datasource.url = [url]
spring.datasource.username = [username]
spring.datasource.password = [password]
spring.datasource.driverClassName = oracle.jdbc.OracleDriver

# second db ...
spring.secondDatasource.url = [url]
spring.secondDatasource.username = [username]
spring.secondDatasource.password = [password]
spring.secondDatasource.driverClassName = oracle.jdbc.OracleDriver


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

@Bean
@ConfigurationProperties(prefix="spring.secondDatasource")
public DataSource secondaryDataSource() {
  return DataSourceBuilder.create().build();
}

Örnek
Şöyle yaparız.

@Configuration
@EnableTransactionManagement
public class JdbcDatasource {

  @Bean
  @ConfigurationProperties(prefix = "my.datasource")
  public DataSource myDataSource() {
    return DataSourceBuilder.create().build();
  }

  @Bean
  public JdbcTemplate myJdbcTemplate() {
    return new JdbcTemplate(myDataSource());
  }

  @Bean
  public PlatformTransactionManager myTransactionManager() {
    return new DataSourceTransactionManager(myDataSource());
  }
  ...
}