HTTP protocol

Feature description

HTTP form-based remote invocation protocol, implemented by Spring’s HttpInvoker, supported by versions above 2.3.0.

  • Number of connections: multiple connections
  • Connection method: short connection
  • Transmission protocol: HTTP
  • Transmission method: synchronous transmission
  • Serialization: form serialization
  • Scope of application: The size of incoming and outgoing parameter data packets is mixed, the number of providers is more than that of consumers, it can be viewed with a browser, and parameters can be passed in by form or URL, and file transfer is not supported for now.
  • Applicable scenarios: services that need to be used by both application and browser JS.


  • Parameters and return values must conform to the Bean specification

scenes to be used

HTTP short connection, standardized and easy-to-read protocol, easy to connect to external systems, suitable for upper-level business modules.

How to use

Starting from Dubbo 3, the Http protocol is no longer embedded in Dubbo, and an independent module needs to be introduced separately.


Configuration protocol

<dubbo:protocol name="http" port="8080" />

Configure Jetty Server (default)

<dubbo:protocol ... server="jetty" />
<dubbo:protocol ... server="servlet" />

Configure DispatcherServlet


If a servlet is used to dispatch the request

  • The protocol port <dubbo:protocol port="8080" /> must be the same as the port of the servlet container,
  • The context path of the protocol <dubbo:protocol contextpath="foo" /> must be the same as the context path of the servlet application.

Last modified February 22, 2023: Merge refactor website (#2293) (4517e8c1c9c)