Interaction between client and server implemented by GWT

Environment: GWT 2.2 + eclipse 3.6

Project name: personrpc

Package name: COM. chuyue. RPC

 

1. client code:

 

Import com. Google. GWT. User. Client. rpc. remoteservice;
Import com. Google. GWT. User. Client. rpc. remoteservicerelativepath;

@ Remoteservicerelativepath ("person") // This cannot be small
Public interface myservice extends remoteservice {
Public Person getperson (string name, int age) throws exception;
}

 

Import com. Google. GWT. User. Client. rpc. asynccallback;

Public interface myserviceasync {

Void getperson (string name, int age, asynccallback <person> callback );
 
}

 

Import com. Google. GWT. User. Client. rpc. isserializable;

Public class person implements isserializable {
Private string name;
Private int age;
 
Public Person (){

}
Public Person (string name, int age ){
Super ();
This. Name = Name;
This. Age = age;
}
Public String getname (){
Return name;
}
Public void setname (string name ){
This. Name = Name;
}
Public int getage (){
Return age;
}
Public void setage (INT age ){
This. Age = age;
}
 
}

 

 

Import com. Google. GWT. Core. Client. entrypoint;
Import com. Google. GWT. Core. Client. GWT;
Import com. Google. GWT. event. Dom. Client. clickevent;
Import com. Google. GWT. event. Dom. Client. clickhandler;
Import com. Google. GWT. User. Client. window;
Import com. Google. GWT. User. Client. rpc. asynccallback;
Import com. Google. GWT. User. Client. UI. Button;
Import com. Google. GWT. User. Client. UI. rootpanel;
Import com. Google. GWT. User. Client. UI. textbox;

Public class personrpc implements entrypoint {
 
Private Static final myserviceasync myservice = GWT. Create (myservice. Class );
 
Public void onmoduleload (){

Rootpanel = rootpanel. Get ();

Final textbox namefield = new Textbox ();
Final textbox agefiled = new Textbox ();
Final button sendbtn = new button ("send ");

Namefield. settext ("zhangsan ");
Agefiled. settext ("12 ");


Final string namevalue = namefield. gettext ();
String agevalue = agefiled. gettext ();

Integer iage = new INTEGER (agevalue );
Final int ageval = iage. intvalue ();

Class myhander implements clickhandler {

@ Override
Public void onclick (clickevent event ){
Sendserver ();
}

Private void sendserver (){
Myservice. getperson (namevalue, ageval, new asynccallback <person> (){
@ Override
Public void onsuccess (person result ){
// Todo auto-generated method stub
Window. Alert (result. getname () + "" + result. getage ());
}

@ Override
Public void onfailure (throwable caught ){
// Todo auto-generated method stub
Window. Alert ("error result ");
}
});
}

}

Myhander = new myhander ();
Sendbtn. addclickhandler (myhander );

Rootpanel. Add (namefield );
Rootpanel. Add (agefiled );
Rootpanel. Add (sendbtn );
}
}

 

2. server code:

Import com. chuyue. rpc. Client. myservice;
Import com. chuyue. rpc. Client. person;
Import com. Google. GWT. User. server. rpc. remoteserviceservlet;

@ Suppresswarnings ("serial ")
Public class myserviceimpl extends remoteserviceservlet implements myservice {

@ Override
Public Person getperson (string name, int age) throws exception {
Person = new person ();
Person. setname (name + "aaaaaaaaaaa ");
Person. setage (age + 100 );
Return person;
}

}

 

3. configuration file: personrpc. GWT. xml

<? XML version = "1.0" encoding = "UTF-8"?>
<Module rename-To = 'personrpc '>
<Inherits name = 'com. Google. GWT. User. user'/>

<Inherits name = 'com. Google. GWT. User. theme. Standard. standard'/>

<Entry-point class = 'com. chuyue. rpc. Client. personrpc '/>

<Source Path = 'client'/>
<Source Path = 'shared '/>

</Module>

 

4. The configuration of Web. XML is as follows:

<? XML version = "1.0" encoding = "UTF-8"?>
<! Doctype web-app
Public "-// Sun Microsystems, Inc. // DTD web application 2.3 // en"
Http://java.sun.com/dtd/web-app_2_3.dtd>

<Web-app>

<! -- Servlets -->
<Servlet>
<Servlet-Name> myserviceimpl </servlet-Name>
<Servlet-class> com. chuyue. rpc. server. myserviceimpl </servlet-class>
</Servlet>
<Servlet-mapping>
<Servlet-Name> myserviceimpl </servlet-Name>
<URL-pattern>/personrpc/person </url-pattern>
</Servlet-mapping>

<! -- Default page to serve -->
<Welcome-file-List>
<Welcome-File> personrpc.html </welcome-File>
</Welcome-file-List>

</Web-app>

 

 

 

This is a simple demo that enables interaction between the client and the server.