I know the core java only and started to learning J2EE. I have a doubt related to Dynamic Web Project.
Currently I have a Dynamic Web Project, JBOSS server and I have to access methods from it using web service.
I am confused about it and tried the different ways like import the package, import the JAR of it, etc.
But I am not getting how to do it with the help of web service. I also don't know the how to create the web service?
Pls tell me how do I access method from it?
Thanks
If you can do what you're trying to do with a servlet, then don't create a full fledged web service. A servlet is much easier, much more efficient, and arguably much more portable to a wider range of potential clients.
If, for whatever reason, you can't use a servlet (and you must, for whatever reason, create a web service), then consider REST instead of SOAP.
For example:
RESTEasy, or
JAX-RS
If you want to create stub files from a wsdl file on windows OS you can use of "java org.apache.axis.wsdl.WSDL2Java -o src -s WSDL wsdl_name" by setting the classpath variables
in your batch file with(.bat) extensions.
Have a look in apache axis.
http://axis.apache.org/axis/
Related
I just develop a tool with my classmates and we want to use Vue.js as Web interface.
For Description what we programmed. We developed a Java EE web application in Eclipse. We use Tomcat 7 as web server. I search a long time and i found nothing.
Vue.js is a javascript front-end framework. There is nothing to stop you from using that with a middle-layer/back-end technology like Java EE.
In your HTML pages(or JSP) just include the Vue.js file as mentioned in the documentation, and other .js files that you create as part of your vue.js frontend application.
The library can then interface with any HTTP-based backend methods that you expose (using Servlets, Controllers, etc.) depending on how your Java EE project is structured and what frameworks it uses.
While investigating the same question, I found this good blog that has a git repository too
https://blog.codecentric.de/en/2018/04/spring-boot-vuejs/
From a glance it looks like a read solid implementation, however it has some sticky setup i haven't come across before.
It dose however seem like a professional and scalable solution i will definitely
give a try.
https://github.com/jonashackt/spring-boot-vuejs
Thankyou 04/24/18 by Jonas Hecht
For sure you can.
Your java application, which is your "backend", has to expose its functionalities as Web services (REST Json WS should be the easiest for what you are trying to do).
To expose your services as Web services, you need to find the easiest framework fitting your need. You will probably need to dive into Maven if you haven't yet, because these frameworks tend to have tons of dependencies.
Your Vue.js interface will make calls to the backend via HTTP requests each time necessary (get a resource, update a resource, ...).
I have a simple Java application (Not a web application) and using maven I distribute it through a Jar file. I need to expose some of its public methods through HTTP(Similar to rest APIs) so that other applications can reuse it by making rest calls.
Doing some research I see for example, Jersey is an option but that seems to be only available for Java Web applications. I also came across HTTPComponents + HTTPClient but the code is much more complicated than how Jersey is.
My question is whether there is a simple solution for Java applications to expose public methods through HTTP.
Thank you,
Sara
Please refer to the comments for the answer. Multiple Web technologies were suggested and seems like I have to convert the project to Web based application if we'd like to distribute as rest APIs and otherwise, if user agrees just use the Jar and Java APIs. Thanks.
I have been trying for the past week or so to wrap my head around how I would go about creating a web application using java. I have looked into many services such as Vaadin, GWT, and CUBA, but because I don't really know which I need I haven't had much luck. Here is what I need:
Web application framework in java (I don't know HTML or Javascript)
Ability to use polymer elements
I would also prefer a minimized use of XML files, but I could work with them if need be.
The Java framework for web development is J2EE. It provides a Web Container to run web application (.war file) as well as other stuff.
Web application can be servlet, JSP etc.
If you are not familiar with Java Web Application, you may want to start with using Eclipse. The following video shows how to use eclipse to build a project for web application
https://www.youtube.com/watch?v=Av6zh817QEc
Since one criteria is to use Polymer I recommend having a look at
gwtmaterialdesign
there are already a few tutorials how to get started and also ready to use templates.
Anyway I believe that you've to dig a little into GWT ...
I am trying to learn about Web Services, Glassfish, Eclipse, etc. and the way I learn is I like to do things manually Instead of playing around with Dynamic Web Projects as many of the tutorials online ask you to do. I am starting with a basic Java project and creating the WSDLs, client stubs, etc. by hand.
I have (remarkably) come pretty far along. What I have done so far is create a web service class and used wsgen to create the WSDL and then used wsimport to create client stubs.
The part that I am stuck on is how do I deploy my service to Glassfish? I have been able to do it using Eclipse (right-click, -> Web Services -> Create Web Service) but as I stated above I want to learn how things work under the covers. So let's say I was using nothing but Notepad and a Java command line compiler how would I go from my current Web Service project to something that is deployable in Glassfish?
Thanks!
You find a hell lot of examples on the Apache TomEE website. This one might fit your needs.
http://openejb.apache.org/examples-trunk/simple-webservice/
You need to package your Webservice and deploy it to the container. There is merely anything happening "under the hood". It's just bred and butter stuff for your IDE. you could also do everything "by hand" (war, http://www.openscope.net/2010/01/25/war-deployment-file-structure/ ; asadmin deploy http://docs.oracle.com/cd/E19798-01/821-1751/giobi/index.html).
M
I develop Java applications with Eclipse that process data. So far I only developed stand alone applications that take data from file or database, process the data, and output the results to the console/file/database.
I would like put my application online. I never did any web development, but from my understanding, the only difference is that my code needs to be on a web server that can get http requests from users, and return http response based on my application's result.
I would like to get advice on the easiest way I can do this. What technology do I need to learn and what tools I can use for making the transition easier. I would also like to separate my code from the code related to the web stuff.
Thanks a lot!
The simplest approach to developing Java web applications is via the Servlet specification. This lets you load your application into a Servlet container (such as Jetty or Tomcat), which handles the HTTP-side invocation issue. Your servlet is then a front-end for your front end agnostic processing application.
Since all applications require a user interface, take a look at the myraid of possible templating languages available. Velocity is always a safe pick. This will help you seperate the user interface from the adapter code.
While you investigate alternatives, Java Web Start may be the fastest way to get your existing application online. Here's a trivial example.
The easiest is most likely to learn how to write a simple servlet, how the HTML looks that you want to generate and then adapt your existing application to run inside the servlet code, and print html instead of just plain text.
This is described in the Servlet part of the Java EE tutorial (which is not great, but a start)
http://java.sun.com/javaee/5/docs/tutorial/doc/bnafe.html
If you want a more accessible book, I can recommend the Head First series. http://oreilly.com/catalog/9780596005405
For a web container, Apache Tomcat is fine. http://tomcat.apache.org/