HttpInvoker is a Spring-specific remoting option that essentially enables RPC over HTTP.
HttpInvoker is a Spring-specific remoting option that essentially enables Remote Procedure Calls (RPC) over HTTP. In order to accomplish this, an outbound representation of a method invocation is serialized using standard Java serialization and then passed within an HTTP POST request. After being invoked on the target system, the method's return value is then serialized and written to the HTTP response. There are two main requirements.
First, you must be using Spring on both sides since the marshalling to and from HTTP requests and responses is handled by the client-side invoker and server-side exporter.
Second, the Objects that you are passing must implement Serializable and be available on both the client and server.
