Question

我有以下类来实例化正确的经理，所以我可以使用一个用于我的暂存，发布和一个用于测试：

public class DAOFactory {
private static final Logger LOG = LoggerFactory.getLogger(DAOFactory.class);

@Autowired
private static ApplicationContext applicationContext;
private final static String dataSourceName = "remoteStagingDataSource";

// TODO : Change variable dataSourceName to the correct DataSource if you deploy on staging/release web server
// -- remoteStagingDataSource -- for deploying on local tomcat server
// -- stagingDataSource -- for deploying on staging server + uncomment the correct bean in src/main/resources/applicationContext.xml
// -- releaseDataSource -- for deploying on release server + uncomment the correct bean in src/main/resources/applicationContext.xml
public static DAOManager createMySQLDAOManager() {
    LOG.info("Setting up datasource to " + dataSourceName);
    DataSource dataSource = setupDataSource(dataSourceName); 
    return new DAOManager(dataSource);
}

public static DAOManager createHSQLDBDAOManager() {
    LOG.info("Setting up datasource to in-memory HSQLDB");
    DataSource dataSource = setupDataSource("hsqldbDataSource");
    return new DAOManager(dataSource);
}

private static DataSource setupDataSource(final String dataSourceName) {
    applicationContext = new ClassPathXmlApplicationContext("classpath:/applicationContext.xml");
    return (DataSource)applicationContext.getBean(dataSourceName);
}
}

现在我想将applicationContext分开用于测试目的（DBUnit测试我的DAO

;

所以两个xml文件：

的applicationContext.xml
的applicationContext-的test.xml

知道我怎么能做到这一点吗？

Answer 1

Spring提供Profiles，它允许在运行时有条件地选择bean实例，具体取决于应用程序所在的环境。

简而言之，您使用beans标记将环境相关的bean包装起来，将profile定义为属性：

<beans profile="DEV">
    <bean id="someBean" class="x.y.ClassA"/>
<beans>
<beans profile="QA">
    <bean id="someBean" class="x.y.ClassB"/>
<beans>

然后设置系统属性以确定要运行的环境：

-Dspring.profiles.active="QA"

Answer 2

好的我觉得我明白了：

@Autowired
private static GenericXmlApplicationContext applicationContext = new GenericXmlApplicationContext();

private static final String DATASOURCE = "dataSource";
private static final String ACTIVE_PROFILE = "remoteStaging"; // "staging" -- "release"

// TODO : Change variable activeProfile to the correct active profile if you deploy on staging/release web server
// -- remoteStaging -- for deploying on local tomcat server
// -- staging -- for deploying on staging server 
// -- release -- for deploying on release server
public static DAOManager createMySQLDAOManager() {
    LOG.info("Setting up datasource to " + ACTIVE_PROFILE);
    ConfigurableEnvironment env = (ConfigurableEnvironment)applicationContext.getEnvironment();
    env.setActiveProfiles(ACTIVE_PROFILE); 
    DataSource dataSource = setupDataSource(DATASOURCE); 
    return new DAOManager(dataSource);
}

public static DAOManager createHSQLDBDAOManager() {
    LOG.info("Setting up datasource to in-memory HSQLDB");
    ConfigurableEnvironment env = (ConfigurableEnvironment)applicationContext.getEnvironment();
    env.setActiveProfiles("test");
    DataSource dataSource = setupDataSource("hsqldbDataSource");
    return new DAOManager(dataSource);
}

private static DataSource setupDataSource(final String dataSourceName) {
    applicationContext.load("classpath:/applicationContext.xml");
    applicationContext.refresh();
    return applicationContext.getBean(dataSourceName, DataSource.class);
}

~~现在，如果我在我的发布网络服务器上部署，我该如何指定设置正确的活动配置文件？只是使用maven？~~

mvn Dvop.env=release tomcat:redeploy -Dspring.profiles.active="release"

编辑：傻我，我总是需要指定dataSourceName。有没有办法让应用程序现在应该连接到哪个数据源，而不是手动手动更改？

Spring分离应用程序Context to purpose

2 个答案: