CoreSpringFactory.java 文件源码

/**
 * Prototype-method : Get service which is annotated with '@Service'.
 * 
 * @param <T>
 * @param serviceType
 * @return Service of requested type, must not be casted.
 * @throws RuntimeException
 *             when more than one service of the same type is registered. RuntimeException when servie is not annotated with '@Service'.
 * 
 *             *******not yet in use********
 */
private static <T> T getService(Class<T> serviceType) {
    ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(CoreSpringFactory.servletContext);
    Map<String, T> m = context.getBeansOfType(serviceType);
    if (m.size() > 1) {
        throw new OLATRuntimeException("found more than one service for: " + serviceType + ". Calling this method should only find one service-bean!", null);
    }
    T service = context.getBean(serviceType);
    Map<String, ?> services = context.getBeansWithAnnotation(org.springframework.stereotype.Service.class);
    if (services.containsValue(service)) {
        return service;
    } else {
        throw new OLATRuntimeException("Try to get Service which is not annotated with '@Service', services must have '@Service'", null);
    }
}