I have created an (AWS) Amazon web service server to run some Application created in Java, this app takes some port for example 8888 and runs locally in localhost:8888/index.html.
I can check that localhost:8888/index.html is working perfectly with the command:
curl localhost:8888/index.html
The thing is I don't know how to access to this app from my domain name, I know there is a way to do this using nginx, but unfortunately, all tutorials are about Node.js.
Following this article I managed to run a Node.JS app (simple app that prints hello world) running on localhost:8080, and when I access my domain name I could get the Hello world message printed!, my question is, can I do the same with a Java Application?
One best bet is to get the host ip and use it; instead of using localhost which sometimes mapped to 127.0.0.1, in such situation you can connect to the app within the host but not from outside.
Can you share the VM details?
Related
I have a spring boot application (Spring Web) which has a tomcat server embedded into it (maven dependency). The application is a server and consists of several HTTP routes. This application is on my laptop. I would like to execute the application on my laptop, and be able to RESTful calls (e.g. GET, POST etc) to the server. How can I make requests to the server from my computer?
I've checked out several tutorials and they tend to use XAMP or another similar application so not sure on how to go about this. Thank you.
Once your war is deployed on your server, you can send any REST call to it using curl, a browser, or my personal favorite for testing is Postman as it circumvents cross-domain issues.
To make the REST call simply use the IP address of the server instead of localhost. You can get the IP address of the machine using ifconfig or whatsmyip.org
http://<IP address>/...
I deployed my app on Heroku. It is a simple app that will throw back the message sent from its client version (running on my PC) back to the client. My server app prints the IP address of the machine it's running on so I can connect to it from my client . I do get to see the IP address of Heroku machine when I deploy and run it. However, I am not able to connect to it from my client version using that IP address(Connection timed out) . I have allowed the port I am using in my firewalls. I don't understand what I am doing wrong .
Pls help me solve it.
If you need to see my code let me know ( the app works fine locally on different terminals so I don't think it has a problem).
Your Heroku dyno (an isolated server) is behind a router. You can't use the IP address to connect to it.
Instead, you the URL https://[appname].herokuapp.com where "[appname]" is the name of your app.
You can also run heroku open from the command line.
I am trying to learn webservice building/deployment. I have built a webservice and deployed it on a oracle weblogic server on my laptop.
i am trying to test the webservice using soapUI from another laptop. i am getting invalid URL error.
can some one point out where i am going wrong
Note the same wsdl works fine if i try to run it from SoapUI on my laptop
Laptops have to be on same network. If so, each laptop will have its local Ip address ( go to cmd promt if using windows and type ipconfig).
Using this Ip, you can access webservice from second laptop which is hosted on your laptop.
If they are not on same network, it is possible but there are lots of things to be considered. I would suggest that only for production applications, not for testing.
At the moment i have an android client app which connects to my java server through socket - serversocket. It sends and receive strings. The java server is connected to a mysql database (actually mariadb) using the jdbc driver.
I succeed to create a jbossas application and upload the code of the java server to openshift, but i didn't find any detailed tutorial on how do i connect to this new uploaded server from my socket client (This one (RMI or socket connection to Java Program on OpenShift) gives some tips but i'm still stucked).
More on this, how do i know that my server runs just fine on openshift and how do i control de calls to the database after i connect it (found this: $ rhc app create MyApp jbossas-7
$ rhc cartridge add mysql-5.5 -a MyApp), using org.mariadb.jdbc.Driver and java.sql is still working ?
Any small guide or tip is highly appreciated. I'm new to these things so please don't be too heavy on comments.
You can only make connections to your OpenShift server on http/https or ws/wss ports. If you want to connect to your java application and pull data from it from an android device, I would suggest using a RESTful api or a servlet, etc.
I had similar problem: My app server originally was running as a ServerSocket listener, and any clients/devices connect to it directly via Socket binding.
To deploy it into OpenShift, my previous initial solution was to change its host:port configuration by following the suggestion as described in this link [Socket connection to Java Program on OpenShift]. It worked nice as far as my app server was successfully up and running. But it did not work well with the port forwarding approach in order to accept remote requests.
So for the final solution, I modified the app server by wrapping my original code with a RESTful webservice around it, and deploy it as a web service.
I have developed a Java server using Eclipse that accepts TCP socket connection from android client, performs some computations, and returns the result to the android phone using this socket. I tried it on Wi-Fi.
I want now to move the Java server to the cloud - basically amazon EC2. Is this possible? I am just using a simple tcp socket connection. I have checked and couldn't find an example but came across "elastic beanstalk". Any help is appreciated, maybe a link or tutorial with such an example.
can i convert my java project to .war and use it or can i install eclipse on the cloud and run it as i do locally?
It is definitely possible. And you don't have to convert your project to a .war, unless you want to.
All you have to do is:
Pick the Amazon Image (AMI) you want to use - Amazon Linux is a good place to start, but there are plenty of other options, including Ubuntu and Windows.
Set up a security group - you need to set an incoming rule for your server's port number. It is pretty easy to do this from the Amazon web-based console.
Start a machine and assign it to the security group you created. Again, this is easily accomplished from the amazon web console.
Once the machine is up, log in (using ssh for Linux or Remote Desktop for windows) and install your server.
A few things to remember:
Since you are now running on a public server, sooner or later your server will be attacked. EVERYONE gets attacked. If all you are opening is your single application port, make sure it is secured.
An Amazon server has a private and public IP. Your client application will connect to the public IP.
Servers can fail, and new servers get new public IPs! You need to prepare for this. Either make the IP in the client configurable, or look into something like Amazon Elastic IPs or dynamic DNS.