选择要与多个DataSourceInitializers一起使用的DataSource bean

Question

我有两个DataSource bean和两个DataSourceInitializer bean，每个DataSource一个。 这些配置位于不同的类文件中，但是两个DataSourceInitializer都尝试设置DataSourceOne。

我怎样才能告诉DataSourceInitializerTwo使用（注入？）DataSourceTwo bean？

//Data Source 1
@Bean
public DataSource dataSourceOne() {
    JdbcDataSource ds = new JdbcDataSource();
    ds.setUrl("jdbc:h2:mem:app1db;DB_CLOSE_DELAY=-1;MODE=Oracle;TRACE_LEVEL_SYSTEM_OUT=2;INIT=CREATE SCHEMA IF NOT EXISTS app1\\;SET SCHEMA app1");
    ds.setUser("app1");
    ds.setPassword("app1");
    return ds;
}

@Bean
public DataSourceInitializer dataSourceInitializerOne(final DataSource dataSource) {
    final DataSourceInitializer initializer = new DataSourceInitializer();
    initializer.setDataSource(dataSource);
    initializer.setDatabasePopulator(DatabasePopulator());
    return initializer;
}

//Data Source 2
@Bean
public DataSource dataSourceTwo() {
    JdbcDataSource ds = new JdbcDataSource();
    ds.setUrl("jdbc:h2:mem:app1db;DB_CLOSE_DELAY=-1;MODE=Oracle;TRACE_LEVEL_SYSTEM_OUT=2;INIT=CREATE SCHEMA IF NOT EXISTS app2\\;SET SCHEMA app2");
    ds.setUser("app2");
    ds.setPassword("app2");
    return ds;
}

@Bean
public DataSourceInitializer dataSourceInitializerTwo(final DataSource dataSource) {
    final DataSourceInitializer initializer = new DataSourceInitializer();
    initializer.setDataSource(dataSourceTwo);
    initializer.setDatabasePopulator(databasePopulatorTwo());
    return initializer;
}

Answer 1

DataSourceInitializer方法似乎基于参数名称注入DataSource bean。 只需使返回DataSource的方法的名称与相应的初始化方法所采用的DataSource参数的名称相匹配即可。

//Data Source 1
@Bean
public DataSource dataSourceOne() {
    JdbcDataSource ds = new JdbcDataSource();
    ds.setUrl("jdbc:h2:mem:app1db;DB_CLOSE_DELAY=-1;MODE=Oracle;TRACE_LEVEL_SYSTEM_OUT=2;INIT=CREATE SCHEMA IF NOT EXISTS app1\\;SET SCHEMA app1");
    ds.setUser("app1");
    ds.setPassword("app1");
    return ds;
}

@Bean
public DataSourceInitializer dataSourceInitializerOne(final DataSource dataSourceOne) {
    final DataSourceInitializer initializer = new DataSourceInitializer();
    initializer.setDataSource(dataSourceOne);
    initializer.setDatabasePopulator(DatabasePopulator());
    return initializer;
}

//Data Source 2
@Bean
public DataSource dataSourceTwo() {
    JdbcDataSource ds = new JdbcDataSource();
    ds.setUrl("jdbc:h2:mem:app1db;DB_CLOSE_DELAY=-1;MODE=Oracle;TRACE_LEVEL_SYSTEM_OUT=2;INIT=CREATE SCHEMA IF NOT EXISTS app2\\;SET SCHEMA app2");
    ds.setUser("app2");
    ds.setPassword("app2");
    return ds;
}

@Bean
public DataSourceInitializer dataSourceInitializerTwo(final DataSource dataSourceTwo) {
    final DataSourceInitializer initializer = new DataSourceInitializer();
    initializer.setDataSource(dataSourceTwo);
    initializer.setDatabasePopulator(databasePopulatorTwo());
    return initializer;
}