選擇DataSource bean以用於多個DataSourceInitializers

Question

我有兩個DataSource bean和兩個DataSourceInitializer bean，每個DataSource都有一個bean。這些配置位於不同的類文件中，但兩個DataSourceInitializers都嘗試設置DataSourceOne。

如何告訴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方法似乎根據參數名稱注入一個DataSource bean。簡單地使你的方法返回一個DataSource的名稱匹配你的合適的初始化方法採用的DataSource參數的名稱。

//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; 
}