I am tying to integrate a gwt project with my already running spring project.
i am using eclispe, and i have a Spring MVC application that receives JSON requests.
i am using the built in Tomcat to run my MVC application.
now i would like to create a new GWT project and have it communicate with my spring project with JSON.
i understand that they need to run on the same ip and port so i would not have to make cross site communication.
if i try to run my GWT application as run-as->Web application (which is the normal way for the project) on the same port as the Tomcat server i get an error that the address is already in use (which makes sense)
i tried creating a new dynamic web project and make it look the same as the GWT project. even though i am able to run the application, nothing happens, and the "entry point" is not run (i am not getting any errors or anything) it just runs the default HTML welcome file and thats it. with out any GWT.
what am i doing wrong, i am surly misunderstanding something about how all this should work.
can anyone help me out please.
You need to select that you are running on an external server:
That is a question that can't just be answered with yes or no. It all depends on your overall architecture and what you are trying to achieve.
As I said, if it is both the same application I'd recommend to integrate the Spring project into the web project. (and if that's the case, the spring project does not need to be a web project)
If the spring project is its own application and maybe running on a different server, keep them separated. Extend the spring project so it offers the functionality (via ejb or webservice) the gwt-web project needs.
Nevertheless, I recommend you do some reading about how Java EE applications should be designed and what the different tiers (client, server/service, business, etc) are for. Oracle/Sun offers some good articles. For example: http://java.sun.com/blueprints/guidelines/designing_enterprise_applications_2e/ or http://docs.oracle.com/javaee/5/tutorial/doc/bnaay.html#bnabb.
Related
So, I've made a dynamic web project in Eclipse.It uses Jsp and servlets. Now I am told to make a standalone independent application for the same. I tried to google as to how it can be done. Most of them pointed me to use Export->Runnable jar file. But on doing so I can't find my dynamic web project in the Launch Configuration. Now how to make the standalone independent application ?
I've done a similar thing using embedded Jetty which means the application jar provides the web service without having to rely on a web server.
I myself haven't tried JBoss Errai at all, but I am thinking of migrating the server-side services of my current GWT project into a new project that will be now treated as a platform.
The services in the currect project that are accessed via RPC can be commonly used with other projects as "base platform."
So, I am thinking of using using JBoss Errai for this scenario. And so, the new "base" platform project will be non-GWT and that Ajax apps built with GWT will just call into this platform for authentication, storage, etc.
Is this a good approach anyway?
If your project actually runs fine, why would you want to change it? you can instead, integrate the errai framework and when you want to add a new component, you can take advantage of the features of errai ;-)
My base need is to use the Jersey framework to develop very basic REST webservices.
I've read several tutorials regarding Jersey (JAX-RS framework) and writing webervices but so for I've not found an easy way to setup a development environment based on Eclipse Helios and Glassfish (Open Source Edition). When creating a Webservice in Eclipse, it seems to use JAX-WS, or when creating a Dynamic Web App, Eclipse reports a credentials error (I use admin/admin) or a wrong user name / password.
The tutorials I've found either use myEclipse, or Tomcat, or Maven. The later works pretty well but I wish I could avoid using the command line because creating the web.xml and other files like that one is really scary, and I'm not sure these files are supposed to be human-written. So I suppose (maybe I'm wrong) using a IDE will make things easier.
What do guys use ? How do you generate these files ? Do you use Eclipse only for writting code or also use the deploy facilities?
Any pointers are appreciated !
Thank you
SCO
You DO need to modify web.xml whenever it's needed. Especially with JAX-RS, you will have to define your servlet in web.xml.
I recommand you to use Maven. There are plenty of exemple in the web to do so. Good luck, JAX-RS is really great ! Maven is also nice.
I also use eclipse for creating and consuming web service based applications. In addition to WTP, I also use Axis plugins to make things easier (through wizards, highlighting as well as for schema verification).
The bottomline is to find the plugins that suit you the best
Does somebody already have some experience embedding gwt in other
client pages except the standard html file?
I want to use gwt as front end and grails as backend. Communication
should be handled over rest json interface so that is loosely coupled.
How do i structure my project at best? Should I create 2 independend
projects or should I stick them together?
At the beginning I had some problems with debugging my gwt application
as it was part of the grails project. Now I copied the compiled js
script to my webapp folder and included it in a grails page. Debugging
gwt in noserver mode worked ok. The problem is , how do I solve my
deployment later at best as I dont want to copy my js everytime by
hand? Already tried the grails gwt plugin but its difficult to debug the gwt application and I even do not want to use the service stuff provided with the plugin.
I thought its a good idea to have 2 maven modules on for grails and one for gwt. Later 2 war files(one grails, one gwt) will deployed on Tomcat, so I also can change gwt client stuff without deploying grails again. How do i manage the brige from grails to gwt best? Just call the standard html in a div from grails page?
I am using maven for building my project.
Thanks for all your help
I have written 2 posts about this topic. In the first one I show Grails+GWT in the same application, using the Grails Gwt Plugin. It appears you already tried that approach. In the second post, I show how to do it with 2 seperate applications, talking JSON between each other using RequestBuilder to request the grails app (that serves JSON responses).
For The deployment in production, you should have Maven doing this job for you.
I've setup a project in Netbeans 6.5 with some web services that I've created myself and some web services that I've imported from WSDL files. I've setup a couple of desktop application through Netbeans in order to consume these web services. I'm not too sure where to go from here.
I have the GUI setup but not sure how to reference the web services so they can be consumed. I was wondering would anybody be able to guide me through this process or point me in the direction of a relevant tutorial. I'd also like to learn how to consume a web service through a JSP (also created in Netbeans) if possible.
Thanks.
You may find this tutorial useful:
http://netbeans.org/kb/docs/websvc/client.html, but since you are using Netbean 6.5 this may be the correct version:
http://netbeans.org/kb/61/websvc/client.html. As the steps show, it isn't difficult to build a jax-ws client using Netbeans.
But, it depends on what version of Java you are using also, most likely. You may want to download the latest version of jax-ws, if you get errors with your wsdl.
For a JSP, just create a custom tag to call the client.