Spring配置访问JNDI

通过创建Properties对象可以实现JNDI的访问:

	public static Object lookup(String name) throws NamingException {
		Properties p = new Properties();
		p.put("server", "tomcat");
		p.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
		p.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jpn.interfaces");
		p.put(Context.PROVIDER_URL, "jnp://9.9.9.9:1099");
		InitialContext ctx = new InitialContext(p);
		return ctx.lookup(name);
	}

但是由于项目需求,想要对lookup的接口配置程spring的bean,通过IOC注入,最早想到的是直接用PropertyPlaceholderConfigurer去加载jndi.properties,然后用JndiObjectFactoryBean去读取JNDI配置信息,没有成功。

通过查看JndiObjectFactoryBean创建JndiObject的源码考虑采用JndiTemplate的方式加载JNDI配置信息。

private static Object createJndiObjectProxy(JndiObjectFactoryBean jof) throws NamingException {
// Create a JndiObjectTargetSource that mirrors the JndiObjectFactoryBean's configuration.
			JndiObjectTargetSource targetSource = new JndiObjectTargetSource();
			targetSource.setJndiTemplate(jof.getJndiTemplate());
			targetSource.setJndiName(jof.getJndiName());
			targetSource.setExpectedType(jof.getExpectedType());
			targetSource.setResourceRef(jof.isResourceRef());
			targetSource.setLookupOnStartup(jof.lookupOnStartup);
			targetSource.setCache(jof.cache);
			targetSource.afterPropertiesSet();
			...
}

JNDITemplate相关创建initialContext代码如下

	/**
	 * Create a new JNDI initial context. Invoked by {@link #getContext}.
	 * <p>The default implementation use this template's environment settings.
	 * Can be subclassed for custom contexts, e.g. for testing.
	 * @return the initial Context instance
	 * @throws NamingException in case of initialization errors
	 */
	protected Context createInitialContext() throws NamingException {
		Hashtable icEnv = null;
		Properties env = getEnvironment();
		if (env != null) {
			icEnv = new Hashtable(env.size());
			CollectionUtils.mergePropertiesIntoMap(env, icEnv);
		}
		return new InitialContext(icEnv);
	}

配置如下:

<bean id="securityService" class="org.springframework.jndi.JndiObjectFactoryBean">
 <property name="jndiTemplate" ref="jndiTemplate" />
 <property name="jndiName">
  <value>SecurityServiceRemote/remote</value>
 </property>
</bean>

成功通过IOC注入,记以备忘。