I am a beginner in Java Web Applications and I read some information here on how to start use primefaces and as a result I added PrimeFaces components to my page as xmlns:p="http://primefaces.org/ui" and also added the primefaces-5.0.jar to my classpath:
MyProject->Java_Resources->Libraries->primefaces-5.0.jar
I read that I had to add primefaces-5.0.jar to WEB-INF->lib->primefaces-5.0.jar and I did it, but I couldn't work with primefaces. I ran my project and neither of primefaces didn't show and also I didn't see any warnings and errors. Do you know any solutions to my problem?
You need to add Jsf component libraries which called jsf-imp.jar and jsf-api.jar and should make configuration on web.xml. You should watch the Jsf+Primefaces Tutorial for beginners.Here is good understandable tutorial for you. http://www.youtube.com/watch?v=F4NawR70uT0
Please forgive me if my question sounds too dumb :(... I have created a java desktop application, which has a single UI screen in Swing... The application creates a pdf report... I want to convert this application into a jsp based web application. So do I just have to create a simple screen where the parameters required to create the report are asked, this screen replaces the swing based UI... and the main block of java code (used to create the report with the help of input parameters) can be invoked from a jsp file? Is that it? Or is something more significant required to make this app into a web app. How do I find out what else is required?
You should have a web server. Create a web archive (.war) from your code base by reusing Java classes and new jsp file (UI). So your understanding is correct. and remember there won't be any main method now.
Yes - JavaSE code is the same Java on server side. You have to change UI. You may use plain HTML or web framework such as JSF.
This highly depends on your code. Business logic and PDF generation might be reused but the UI will definitely be replaced. You'd then also have to account for the download part, i.e. the response could be a page with the DL link or the generated PDF.
Edit: as Azodious already stated, you'd need a webserver like Tomcat (or JBoss which is a fully fledged application server and includes Tomcat) that is able to execute the Javacode, so just replacing the UI wouldn't help much.
the question in very simple...
I'm currently developing an app in java with reports, for that, i used birt, but, i don't want install tomcat, because i will not can in production
I searched on google, and the result is very poor.
can somebody help with this?
thanks.
You can put a BIRT engine with in your applications war. Just include content of birt.war in your application's war and define servlets for birt.
See here for details
I'm new to IBM Rational Application Developer. I'm running RAD 7.5.5 and want to use GWT as the front end for an application I'm writing. What I'm asking is basically if someone has had experience with this, and if so, explain in a few simple steps how it's done or maybe refer me to an example somewhere online where this is explained.
Deploying to WebSphere is no different then deploying to any other Application Server, or even a servlet container. You just need to compile your GWT app and package it in a WAR/EAR file. You deploy the application and have whatever HTML file you want the GWT app to appear in, include the nocache.js.
If you generate your app either using the command line script, through Eclipse, or with Maven, this HTML file will be generated for you. GWT is server agnostic, unless you want to use GWT-RPC, in which case you need a Java backend. You could run GWT on a plain Apache server if you wanted.
so now i think i have learned all basics and terminology for java. but what i don´t know is how to code and display a web page with Netbeans in Java.
the most tutorials contains lots of talks about different technologies "Java uses Java Beans, JSP and servlets" and so on. Where can i find short practical tutorials that actually teach me where to code what and then compile and where to put all the files (war, jar, ear..) in Glassfish to be able to see the output from a Web browser. Simples things that makes one understand all these different "layers" which are just classes using classes. Feels like i never get to know how i can put up a web server with Java cause I can´t find this kind of tutorials.
Would be great if someone could send some links to such practical stuff.
Thanks.
This is the first such document I found: http://www.java-tips.org/java-tutorials/tutorials/introduction-to-java-servlets-with-netbeans.html
More:
http://netbeans.org/kb/docs/web/quickstart-webapps.html
http://blogs.oracle.com/jonasdias/entry/webservices_with_jsp_on_netbeans
http://www.fuzzylizard.com/archives/2005/09/18/628/
http://cit.wta.swin.edu.au/cit/subjects/CITP0014/tutorials/netbeans/tomcat/Running_Tomcat_from_Netbeans.html
http://supportweb.cs.bham.ac.uk/documentation/java/servlets/netbeans-webapps/
I even found a small ebook on this (PDF!) http://www.comp.dit.ie/bduggan/Courses/projects/Getting%20Started%20with%20Tomcat%20&%20NetBeans.pdf
How do I code and display a web page with NetBeans in Java?
Let's go! Fire up NetBeans. I'm using NetBeans 6.7.1 with the Java EE stuff installed, and I've got a GlassFish installed and tied up, so I don't have to care about that stuff. Your setup might differ in the details.
Do a File->New Project, and pick "Java Web" from the categories. Select "Web Application" and hit Next. Enter a project name and tweak the location, if liked. Hit Next. The next page should have a server selection drop-down; as hinted above, mine has "GlassFIsh v2.1" selected. That's fine - as long as NetBeans can interact with a Java application server of some sort, this crash course will run okay.
Make a note of the "context path" - this will be based on the project name, and basically forms the base of the URL at which your application will reside. Hit Next. Ignore the next page, for now, which talks about various frameworks, and hit Finish.
Churn, churn. You should eventually see your web project created. It's a very simple application which contains a single JSP file, and that will be open in the main editor. It's got a bunch of HTML in it, and some JSP syntax.
Take a look at the project structure. You've got a "web pages" folder which contains a WEB-INF directory, and an index.jsp file. That's the same file you're looking at. WEB-INF is a standard directory which contains the metadata used to deploy your application, and also the compiled classes that power it.
The only thing you should need to do now, in order to get to the original objective, is to hit the big ol' Run button, or right-click on the project and select "Run" from the menu. NetBeans will compile, and then fire up your application server and deploy the application to it. Finally, your web browser should pop open a new tab with the classic "Hello, world" page in it.
At this point, what do you actually have? You've got an empty web project with a single JSP file in it. You could customise it, but that's maybe not very exciting. What you're really looking at is a basic framework in which you can apply your learning of JSP and of servlets as you get to grips with them.
How to proceed with said knowledge transfer? I recommend a decent book or two. The one I used to get going was "Beginning JSP, JSF and Tomcat Web Development: From Novice to Professional" (Zambon, Guilio; Apress; ISBN 1-59059-904-7), which has a decent beginner's guide to how JSP and servlets work together, and a handy reference guide for the former.
As soon as possible, you're going to want to migrate away from raw servlets and JSP to tying them together in a slightly more flexible way using one of the frameworks I skipped over earlier. I'm not going to tell you which one to learn; there are several pretty decent ones. Try Spring MVC, or Struts. Once again, I'd suggest getting a decent book.
I would start by taking a look at servlets and JSP. I found this book helpful when I read it: Head First Servlets and JSP
Netbeans comes with many sample projects, create a few and browse the source code.
A already working sample is always a good starting-point for your coding.
If you're also interested in using Eclipse, which makes it very simple to create and deploy web applications here's a nice tutorial - WTP Tutorials
Hi to start code and setting up web server with java follow the following procedure.
First you need to install Apache-Tomcat or Jetty any web container or servlet container.
And you have set the classpath of servlet-api.jar file.
Next you will have to save your web-page code stuff in web-apps folder of tomcat.In web-apps folder there you have to create a web-inf folder in which web.xml file is stored.And after writing servlet and jsp programs the compiled class files are stored in classes folder of web-inf folder.JSP files are stored along with WEB-INF folder.
You have to keep all the jar files in LIB folder of classes folder.
The web container will take care of initalizing servlet, loading class using inti method.Using service method it will create two objects request and response.
The Java EE stack is quite a mouthful. I suggest you just look at writing a Web Application (WAR), and deploy it to Tomcat.
Unfortunately doing a full WAR-file deployment is rather tedious so you generally want some help from your IDE or the web container.
The easiest place to start is probably installing and starting Tomcat and then fiddle with the files in the file system. There is an example application.