1. 实际上hessian发布服务是根据接口来发布的，但是接口必须要有对应的实例对象才可以完成服务的暴露

2. hessian在和spring集成的时候，spring做了过多的检查校验

比如: org.springframework.remoting.support.RemoteExporter  （spring-context-3.1.1.RELEASE.jar）

protected void checkServiceInterface() throws IllegalArgumentException {
		Class serviceInterface = getServiceInterface();
		Object service = getService();
		if (serviceInterface == null) {
			throw new IllegalArgumentException("Property 'serviceInterface' is required");
		}
		if (service instanceof String) {
			throw new IllegalArgumentException("Service [" + service + "] is a String " +
					"rather than an actual service reference: Have you accidentally specified " +
					"the service bean name as value instead of as reference?");
		}
		/**
		 //以下部分是严格校验，服务对象必须是接口的实例，导致无法将代理对象绑定的接口上发布服务。 
		if (!serviceInterface.isInstance(service)) {
			throw new IllegalArgumentException("Service interface [" + serviceInterface.getName() +
					"] needs to be implemented by service [" + service + "] of class [" +
					service.getClass().getName() + "]");
		}*/
	}

上面解释和代码是我注释掉的，去掉检查校验，就可以完成接口+代理对象来完成服务的发布。

具体代码见附件： RemoteExporter.java