I have just became a partner of a company that has a site developed in JAVA. As part of the agreement they allow me to create a section on their site (so I can take benefit of their traffic), but the development of this section needs to be as less intrusive as possible.
So ideally I would like to implement an independant web application in JAVA (with same layout) with a separate database that runs in the same application server. And in the application server to make a mapping like this:
All the traffic that comes to www.domain.com/MY_FOLDER
its served by my web application, all the rest should be served by my partners site.
I have no experience in JAVA but I found that in php this can be done, so I was wondering if it can be done also in JAVA.
About the application server I dont know yet which one they are using but I guess that are using "resing server" (by caucho: http://www.caucho.com/).
I would really appreciate if you can give me any ideas of how I can achieve this.
Thanks in advance,
Juan
Only one application can listen at a given socket at one time, so you need to have the existing server forward "your" requests to your web application, if it is not Java capable in itself.
The way to do that is not standardized so you will have to talk to the server administrator.
The easiest way to start from scratch with a Java Web Application is in the Netbeans bundle with Glassfish.
Related
I wanted to create a Java web app with electronJS front-end. Electron would technically communicate with the Java server for loading data. The Server would be responsible for managing users and sending data stored on a database to electron.
I read about web apps that are made with java and the many servers (glasfish, tomcat, etc.) I do not really know if it's needed for my project.
My idea was to create the back-end in Java and host it on a machine that is 24h online. I don't really understand the point of Tomcat etc.
Thank you for your help (:
I have coded a Jersey based java server which is all wrapped in one excecutable jar.
I am looking for a web host service in which i can deploy the jar and run it.
I saw some dedicated servers which can do this but this is overshooting the need, any suggestions?
As per your comment I understand that you created a web application with a Jetty embedded server.
I think the best solution for you in this case is to get a virtual machine host, install JRE, upload your *.jar and run it from there. Given firewall permissions and correct configuration you should be able to receive requests on the 80 port. Cons? It costs. A lot.
Most of the Java hosts have already a servlet container running (almost always Tomcat) and you can only deploy your web application in it. Having an embedded Jetty server messes up everything for you.
I strongly suggest you to detach your web application (or as you called it REST server) from Jetty and deploy the *.war in any of the multiple free Java hosts to test it online.
EDIT
Thanks to you I made a deeper research on the topic and found an interesting guide to deploy a web application with embedded Jetty server in Heroku. I've never tried it nor I know if its free, but maybe you can give a try.
Digital Ocean work pretty well for me. Their basic packages are really cheap and you get root control over your own machine, meaning you can host whatever you want without restrictions. The only downside is that they are pretty old school - you have to set up EVERYTHING yourself, including firewalls etc. There are a lot of guides available on their website though, which makes life a lot easier!
http://www.digitalocean.com
I know this is a touch redundant but I don't have voting or comment rights yet so this is the only method for me to communicate.
Digital Ocean is a solid choice. I am paying 5$ a month for a VM with 512 Mb Ram and 20 gigs of storage (which for my use is just fine.) I am still working on my first proper deploy but as stated above there are tons of tutorials to guide you through it. I have no prior command line experience but I've managed to get the server running, Created an SSH key, uploaded my landing page and have gotten a test project using Spark as the embedded server up and functional in a matter of a few hours. The Droplets are easily scalable from what I've seen. I'm still having trouble deploying an Rest based app with Postgres as the DB but it seems more to do with the ports in play than anything else. Keep getting 404s.
Hi I'm sorry for the naivety of this problem but I need some guidance as I have confused myself greatly.
I have been tasked with creating a database(mysql) and creating a web interface for i to be interacted with. I have experience with web design and database development. Previously I have used java to interact with a DB and was hoping I could use JSP for the web interface. This is where my problem is, how I would I deploy/host this website?
I have 2 theories which are misguided:
(A). Use a cms which has a web server for me to place the jsps in?
or
(B). Use a domian/web hosting site that has a server for me to place the jsps in?
I'm totally lost and any guidance would be greatly appreciated.
Simple answer is you will require a Java Application Server to host your JSPs.
You can use Apache Tomcat, GlassFish, or some other application server to do this.
You will also need a database e.g MySQL running on your host or some other host accessible by the machine running the Java application server.
You can choose to host all of this locally or farm it out to a web host provider depending on your resources.
A CMS seems like overkill. See this link for a description of CMS and its functionality. I don't believe this is what you are looking.
I don't know exactly what you're looking for, but I think you need (B)
You need a MySQL instance running your database and a servlet container (e.g. Tomcat) to host your JSPs.
Running a CMS which is just used to use the DB that it works with is a little bit heavy for that usecase.
As suggested by Mr #cmd , yes there is no need to go for an outsourced server just to host your website, unless you need it to be visible to the world.
Else for your testing purpose, you can use Any of the Apache Tomcat, Glassfish servers for hosting the applications designed in JSP or in other web interface language.
And Inside of the JSP coding itself you may write the interaction coding with your database.
your database also can be installed in the same server.
And actually instead of a server, you may even use your PC to install the Apache Tomcat and the database and start using it.
I have an existing Java application running on a linux box that monitors the state of relays and network information. This is a stand-alone device currently.
What I would like to further develop is a web server for the device to remotely monitor, configure, and control the device via an Ethernet connection. To achieve this, I need some way to interface between the web server, which could be configured as enabled/disabled, and the master device, which is always running.
Is there a good way to do this? I have looked at apache w/ tomcat and similar web servers but not sure if this is what I need. The key here is that the web server needs to be able to access the existing java application without interfering with its always running services.
You either develop a webapp, use your Java application's API inside the webapp, and deploy this webapp inside a web container. Or you can do the reverse and embed a web server inside your application (see here for documentation to embed Jetty).
If you want to keep the webapp and the original application in two separate JVMs, you'll need some wey to communicate between both, like sockets, RMI, or even files, but it will be more complex.
You might want to take a look at JMX http://docs.oracle.com/javase/tutorial/jmx/overview/index.html
We have a java server application which runs certain batch jobs. It's core function is not as a web application and there's no reason for it to be that. But we would like to add an option to check what the app is doing from a web page. And we thought this could be nicely done with the Google Web Toolkit.
In any previous experiences we have with GWT we have deployed it on Tomcat. But in this case it seems like overkill. The web part is more of a side function to what the application is actually doing.
I'm thinking of a solution where the web server is integrated into the jar file - perhaps Jetty? So that the full java application can be deployed to a single jar file together with the web/GWT part.
There may be performance aspects to this but the web side of things will have very few users. Are there any other reasons not to do it this way?
And, can you give some advice on how to configure Eclipse / Ant / Jetty / GWT for this?
we had the similar experience at our previous project. There was an eclipse-rcp application, with embedded Jetty server (it was started programmatically when application was starting). GWT application was deployed into the Jetty as usually. Also there was a OSGI-service as a controller to provide communication between GWT-server and other parts of application. GWT server was usual RCP server, which is described in the most of examples. It had a reference to the controller. Moreover, it was an event listener, to support bot-side communication.
The main problem for us I think, was synchronization problem. Since there were a lot of messages between eclipse-rcp application an GWT-part (every let say 100 ms the message was received) and GWT had an asynchronous way of communication between client part and its server part, then some mechanism had to be created to synchronize those messages. Otherwise there were no performance problems (except IE 6. which had to be supported:S :D).
Hope this will somehow help.
Upd: As far as I remember, the controller was registered as OSGI service only to be able to communicate with other services of Eclipse-RCP part. In order to communicate with GWT controller was implementing special interface, which was known to the GWT-server (Controller was registered as an implementer through instantiation and the server was regsitered in the controller as IMessageListener). This interface was lying in separate project, which could was also built into the .war file. This project also contained number of event to support backward communication from controller to GWT-server through IMessageListener interface.
It's kind of confusing probably, sorry. May be I should draw a diagram..