CHATBOT EXAMPLES IN WEBAPPLICATION JAVA HOW TO
CHATBOT EXAMPLES IN WEBAPPLICATION JAVA INSTALL
CHATBOT EXAMPLES IN WEBAPPLICATION JAVA CODE

The third party modules can be installed using the following command: npm install module_nameĪnd the installed modules can be used using the require() function: var module = require(‘module_name’) These modules can be user-defined or third party modules. Nodejs allows the modules of libraries to be included in the application. Also the JavaScript works well with JSON and No-SQL databases. The asynchronous behaviour can be implemented using callbacks. For example, Node can process other things while a file is being read off disk, or while waiting for an HTTP request to complete. Node.js lets developers use JavaScript to write Command Line tools and for server-side scripting - running scripts server-side to produce dynamic web page content before the page is sent to the user’s web browser.Įven though the node is single threaded it’s still faster to use asynchronous functions. The most important advantage of using Node is that we can use JavaScript as both a front-end and back-end language.Īs we know, JavaScript was used primarily for client-side scripting, in which scripts were embedded in a webpage’s HTML and run client-side by a JavaScript engine in the user’s web browser.

CHATBOT EXAMPLES IN WEBAPPLICATION JAVA CODE

Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside the browser. We will use the JavaScript framework Express.js and the libraries Mongoose and Socket.io to achieve this.īefore we start, lets have a quick look at the basics of Node.js Node.js In this tutorial, we will use the Node.js platform to build a real time chat application that sends and shows messages to a recipient instantly without any page refresh.

CHATBOT EXAMPLES IN WEBAPPLICATION JAVA HOW TO

Read all the details and more in my upcoming book: and follow the book itself on Twitter: long, stay tuned and if you have any questions, don’t hesitate to ask.By Arun Mathew Kurian How to build a real time chat application in Node.js using Express, Mongoose and Socket.io

The repository contains both, the slash commands and the Event/Web API examples: serverlessbuch/slack-chatbot While AWS Lambda (or serverless in general) is stateless, no real-time API (based on websockets) can be used.īut there is the Event API which will notify you about certain events whith a HTTP(s) request and you can “respond” asynchronously via the Web API with messages.Īnother interesting option is using the so called Slash commands where the user enters something like /calc 2+2 and your created Slack chatbot will answer 2+2 = 4. Link to the repository: serverlessbuch/alexaskill Slack Chatbot Just define a few Intents and Slots for getting the spoken user input as data.įorward it to a AWS Lambda function and create a response. It’s so easy creating an Alexa skill (for Amazon Echo and Echo Dot). This was really fun - Alexa loves AWS Lambda! Pure JAX-RS was too boring for me, so I added some CDI with Weld (also reference implementation) to have the resources automatically injected into my classes.įor validating the inputs, I also added Bean Validation (JSR-303) to the example.įind the repository at serverlessbuch/lambda-jaxrs-cdi. The library supports running JAX-RS with Jersey (reference implementation) on AWS Lambda, so you have a JerseyLambdaContainerHandler instead of the SpringLambda… one. The Java EE example is very analog to the Spring one. You can find the repository at serverlessbuch/lambda-spring. Just use your well known annotations and you’re done.Īdditionally I’ve put up the example with Spring Data DynamoDB. The API Gateway routes all requests to the Lambda function where special SpringLambdaContainerHandler handles the origin request and dispatches it to the Spring classes.įor configuration there’s a annotated class, like you know it from your Spring app.ĭependency Injection with autowiring works like a charm.Īlso handling all requests with Spring MVC. I started with a Spring application firing up on Serverless. Lucky us, AWS Labs created a library with which you can run existing Java APIs on AWS Lambda: awslabs/aws-serverless-java-container So you thought, you have to tie yourself to the AWS Lambda Java API if you want to develop functions running on it? I played with an Alexa skill, a Slack chatbot and running Spring and Java EE APIs on AWS Lambda. #wrapup #summary #digest #serverless #serverlessbuch #book #aws #cloud #alexa #chatbot #javaee #springĪs promised in march wrap-up, I’ll write some words about the serverless demo apps for my Serverless Computing Buch.

April Wrap-up - Serverless Buch goes Alexa, Chatbot, Spring and Java EE

Chatbot examples in webapplication java