spring 4.x 使用dubbo http协议的一个问题

使用dubbo的http协议，dubbo是使用了spring的http invoker

dubbo是这么用的

protected <T> T doRefer(final Class<T> serviceType, final URL url) throws RpcException {
final HttpInvokerProxyFactoryBean httpProxyFactoryBean = new HttpInvokerProxyFactoryBean();
httpProxyFactoryBean.setServiceUrl(url.toIdentityString());
httpProxyFactoryBean.setServiceInterface(serviceType);
String client = url.getParameter(Constants.CLIENT_KEY);
if (client == null || client.length() == 0 || "simple".equals(client)) {
SimpleHttpInvokerRequestExecutor httpInvokerRequestExecutor = new SimpleHttpInvokerRequestExecutor() {
protected void prepareConnection(HttpURLConnection con,
int contentLength) throws IOException {
super.prepareConnection(con, contentLength);
con.setReadTimeout(url.getParameter(Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT));
con.setConnectTimeout(url.getParameter(Constants.CONNECT_TIMEOUT_KEY, Constants.DEFAULT_CONNECT_TIMEOUT));
}
};
httpProxyFactoryBean.setHttpInvokerRequestExecutor(httpInvokerRequestExecutor);
} else if ("commons".equals(client)) {
CommonsHttpInvokerRequestExecutor httpInvokerRequestExecutor = new CommonsHttpInvokerRequestExecutor();
httpInvokerRequestExecutor.setReadTimeout(url.getParameter(Constants.CONNECT_TIMEOUT_KEY, Constants.DEFAULT_CONNECT_TIMEOUT));
httpProxyFactoryBean.setHttpInvokerRequestExecutor(httpInvokerRequestExecutor);
} else if (client != null && client.length() > 0) {
throw new IllegalStateException("Unsupported http protocol client " + client + ", only supported: simple, commons");
}
httpProxyFactoryBean.afterPropertiesSet();
return (T) httpProxyFactoryBean.getObject();
}

这里报了个错java.lang.NoClassDefFoundError: org/springframework/remoting/httpinvoker/CommonsHttpInvokerRequestExecutor

CommonsHttpInvokerRequestExecutor是在spring 3.x版本中的

在spring4.x中 换成了HttpComponentsHttpInvokerRequestExecutor

so 改dubbo的源码，或者拷一份spring3.x的CommonsHttpInvokerRequestExecutor 到项目中（可能会有兼容性问题）