选择DataSource bean以与多个DataSourceInitializer一起使用

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，但两个DataSourceInitializer都尝试设置DataSourceOne。

如何告诉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方法似乎是根据参数名称注入DataSource bean。只需使返回DataSource的方法的名称与适当的初始值设定项方法接收的DataSource参数的名称匹配即可。

//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;
}