in src/main/java/com/qianmi/dubbo/rpc/protocol/jsonrpc/JsonRpcProtocol.java [106:113]
protected <T> T doRefer(final Class<T> serviceType, URL url) throws RpcException {
JsonProxyFactoryBean jsonProxyFactoryBean = new JsonProxyFactoryBean();
jsonProxyFactoryBean.setServiceUrl(url.setProtocol("http").toIdentityString());
jsonProxyFactoryBean.setServiceInterface(serviceType);
jsonProxyFactoryBean.afterPropertiesSet();
return (T) jsonProxyFactoryBean.getObject();
}