@Test
public void testHessianProtocol() {

    HessianServiceImpl server = new HessianServiceImpl();
    Assert.assertFalse(server.isCalled());
    ProxyFactory proxyFactory = ExtensionLoader.getExtensionLoader(ProxyFactory.class).getAdaptiveExtension();
    Protocol protocol = ExtensionLoader.getExtensionLoader(Protocol.class).getAdaptiveExtension();
    URL url = URL.valueOf("hessian://127.0.0.1:5342/" + HessianService.class.getName() + "?version=1.0.0&hessian.overload.method=true");
    Exporter<HessianService> exporter = protocol.export(proxyFactory.getInvoker(server, HessianService.class, url));
    Invoker<HessianService> invoker = protocol.refer(HessianService.class, url);
    HessianService client = proxyFactory.getProxy(invoker);
    String result = client.sayHello("haha");
    Assert.assertTrue(server.isCalled());
    Assert.assertEquals("Hello, haha", result);
    invoker.destroy();
    exporter.unexport();
}