以編程方式爲Spring創建JNDI數據源

Question

我有一個現有的基於Spring的基於Web的應用程序，它具有使用JNDI定義的數據源，我試圖創建一個獨立的應用程序來使用bean。如何在獨立應用程序中以編程方式創建JNDI條目和數據庫屬性？

<bean id="myDataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> 
    <property name="jndiName" value="java:comp/env/jdbc/MyDS" /> 
</bean> 

    public static void main(String[] args) { 

     // this throws an error since the JNDI lookup fails - can I programmatically define the database properties here? 

    ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); 

    UserService userService = ctx.getBean(UserService.class); 
    User user = userService.findUserById("jdoe"); 

    System.out.println("display name: " + user.getDisplayName()); 
} 

編輯：

我想這樣的事情，但我現在得到的錯誤「javax.naming.NoInitialContextException：需要環境或系統屬性指定的類名」

public static void main(String[] args) { 
    setupJNDI(); 

    ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); 

    UserService userService = ctx.getBean(UserService.class); 
    User user = userService.findUserById("jdoe"); 

    System.out.println("display name: " + user.getDisplayName()); 
} 


private static void setupJNDI() { 
    InitialContext ic; 
    try { 
     ic = new InitialContext(); 
     ic.createSubcontext("java:"); 
     ic.createSubcontext("java:/comp"); 
     ic.createSubcontext("java:/comp/env"); 
     ic.createSubcontext("java:/comp/env/jdbc"); 
     SQLServerConnectionPoolDataSource myDS = new SQLServerConnectionPoolDataSource(); 
     opaDS.setServerName("myserver"); 
     opaDS.setPortNumber(1433); 
     opaDS.setUser("user"); 
     opaDS.setPassword("password"); 

     ic.bind("java:/comp/env/jdbc/MyDS", myDS); 
    } catch (NamingException e) { 
     e.printStackTrace(); 
    } 
} 

Answer 1

org.springframework.test依賴項支持通過SimpleNamingContextBuilder：

// First create the mock JNDI tree and bind the DS 
SimpleNamingContextBuilder builder = new SimpleNamingContextBuilder(); 
DataSource ds = new ComboPooledDataSource(); 
ds.setDriverClass(...); // etc. for uid, password, url 
builder.bind("java:comp/env/jdbc/MyDS" , ds); 
builder.activate(); 

// Then create the Spring context, which should now be able 
// to resolve the JNDI datasource 
ApplicationContext context = new ClassPathXmlApplicationContext("..."); 

這應該工作。

乾杯，