DatabaseConfiguration.java 文件源码

@Bean(destroyMethod = "close")
@ConditionalOnExpression("#{!environment.acceptsProfiles('cloud') && !environment.acceptsProfiles('heroku')}")
public DataSource dataSource(DataSourceProperties dataSourceProperties, JHipsterProperties jHipsterProperties) {
    log.debug("Configuring Datasource");
    if (dataSourceProperties.getUrl() == null) {
        log.error("Your database connection pool configuration is incorrect! The application" +
                " cannot start. Please check your Spring profile, current profiles are: {}",
            Arrays.toString(env.getActiveProfiles()));

        throw new ApplicationContextException("Database connection pool is not configured correctly");
    }
    HikariConfig config = new HikariConfig();
    config.setDataSourceClassName(dataSourceProperties.getDriverClassName());
    config.addDataSourceProperty("url", dataSourceProperties.getUrl());
    if (dataSourceProperties.getUsername() != null) {
        config.addDataSourceProperty("user", dataSourceProperties.getUsername());
    } else {
        config.addDataSourceProperty("user", ""); // HikariCP doesn't allow null user
    }
    if (dataSourceProperties.getPassword() != null) {
        config.addDataSourceProperty("password", dataSourceProperties.getPassword());
    } else {
        config.addDataSourceProperty("password", ""); // HikariCP doesn't allow null password
    }

    if (metricRegistry != null) {
        config.setMetricRegistry(metricRegistry);
    }
    return new HikariDataSource(config);
}