JAVA RMI Example

RMI is an RPC framework in the Java language, this article gives the following basic examples:

1. Implement the interface:

 Public Interface extends Remote {    publicint Add (intintthrows  java.rmi.RemoteException;}

2, the server to implement the interface:

 Public classCalcimplextendsUnicastRemoteObjectImplementsIcalc {protectedCalcimpl ()throwsRemoteException {Super(); } @Override Public intAddintPARAM1,intparam2) {        returnParam1 +param2; }     Public Static voidMain (string[] args) {Icalc calc; Try {            //The following code mainly solves the connect confused problemSystem.setproperty ("Java.rmi.server.hostname", "192.168.0.16"); Calc=NewCalcimpl (); Locateregistry.createregistry (1011); Java.rmi.Naming.rebind ("Rmi://192.168.0.16:1011/calc", Calc); } Catch(RemoteException e) {e.printstacktrace (); } Catch(malformedurlexception e) {e.printstacktrace (); }    }}

3. Define the test client:

 Public class Client {    publicstaticvoid  main (string[] args) {        Icalc calc;         Try {            = (icalc) naming.lookup ("Rmi://192.168.0.16:1011/calc");            System.out.println (Calc.add (2,3));         Catch (Malformedurlexception | RemoteException | notboundexception e) {            e.printstacktrace ();     }}}

4. Test execution sequence:

1, server-side compilation Javac Calcimpl

2, create pile file rmic Calcimpl, the directory will be added calcimpl_stub;

3, the implementation of Rmiregister, registration of the procedure;

4. Start the service Java Calcimpl in a new window;

5, copy the calcimpl_stub to the client, execute Java client, the client prints the budget result

JAVA RMI Example