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Node js call rest api get

To get started with it, I assume that you have Node. For the sake of simplicity, we won't be using a database, so you don't need experience using one.

We will use a simple JavaScript array to store our data instead. We will get a little bit deeper about HTTP methods in later this article. On a collection of data, like books for example, there are a few actions we'll need to perform frequently, which boil down to - CreateReadUpdate and Delete also known as CRUD Functionality. However, it's highly customizable using something called "middleware". ExpressJS is very easy to use, install, and learn. Even though we are only going to build a REST API in this article, the ExpressJS framework is not limited to just that - you can do all sorts of things like hosting static files, performing server-side rendering, or even use it as a proxy server.

These are the methods that correspond to the CRUD tasks:. You're free to choose whether you even want to use PUT since it can be omitted fully.

node js call rest api get

Though, stay consistent with the HTTP verbs you use. Let's create a simple app to store information about books. In this app, we will store information about ISBN of the book, title, author, published date, publisher and number of pages. I will be using this dataset from GitHub to get some sample details about books.

Now, let's start building a simple "Hello World" app. When we visit our app in the browser, we'll be greeted with a simple message. Now, we can create a simple GET endpoint. When a user hits the endpoint, the message "Hello World, from express" will appear. Middleware acts almost like extensions for the Express server and provides additional functionalities in the "middle" of a request.

For now, to get started, we need to install a middleware called body-parserwhich helps us decode the body from an HTTP request:. Since we are calling the API from different locations by hitting endpoints in the browser.But these technologies used heavy definitions for handling any communication task. Thus, REST was developed which helped in reducing the complexities and provided an architectural style in order to design the network-based application.

Since Node. Below are the topics that I will be covering in this article:. It is an architectural style as well as an approach for communications purposes that is often used in various web services development.

REST architectural style helps in leveraging the lesser use of bandwidth which makes an application more suitable for the internet. It is completely based on the resources where each and every component is regarded as a component and a single resource is accessible through a common interface using the standard HTTP method. Now, each of these modules is used to address a specific part of the transaction. This approach provides more flexibility but requires a lot of effort to be built from the very scratch.

The main functions used in any REST-based architecture are:. Well, there are six ground principles laid down by Dr. Below are the six guiding principles of REST:. To build this application, you will need to install the following:. You can use any IDE or code editor according to your choice. First, you need to create your project directory.

Next, open the command prompt and navigate to your project directory. Once there, you need to call npm using the below command:. When you hit enter, Node. Here you can define your entry point along with several other information. For this demo, I will be using script. Next, we will be installing Express.

Finally, I will be installing a node monitoring package called nodemon.Written by Jonathan Chaffer unclejonbob. Lately I have been experimenting with using NodeJS as a scripting language for personal tasks, rather than its typical function as a web server. There are many things about NodeJS that I like, and writing these little disposable scripts has been a great way to experiment.

Recently I wanted to perform some batch operations with my content on The Game Crafter's web service. In particular, the service requires that its users approve each card in a deck before it is sent to the printer. This is a reasonable requirement, but for people like me who automate the creation of their graphics, it's a lot of manual clicking to go through each card in turn and approve it. Instead, I wanted to check and approve one card, and then automate the rest of the approvals for a deck.

Later, I'll discuss actually taking action using these results. The exception to this is a GET request, which instead takes its data as a query string. I didn't want to have to deal with this detail, so I cobbled together a wrapper function that would produce data in the correct format and issue the request. We'll walk through each bit of the function and discuss it.

Since this is a simple, one-off script, We're not putting much care into the organization of my configuration. We're just defining configuration info in variables global to the script's scope.

Note that we are requiring the https library rather than http, just because that's the protocol this site uses for its transport. The syntax is mostly interchangeable. This is where the data is encoded. We produce a JSON-formatted string from whatever data object was passed in. If the method is GET, then we modify the URL we're calling so that it contains the query string representation of the same data. The NodeJS querystring library makes this painless.

Because this is NodeJS, all of the functionality is handled asynchronously; we need to set up handlers to accept incoming data, as well as to deal with the response once it's complete. In this case, incoming data is simple. We just have to accept the data and concatenate it onto a string. Finally, we call the success callback with this response info. Lastly, we need to provide the JSON data as the body of the request, and actually trigger the send. This completes the function.

First, the API requires authentication, so we'll need a function that logs us in. The login function simply calls the appropriate REST endpoint, passing the user name and password to the server.

The server responds with a session ID, which we will need to pass into all further requests. This function will grab the object info for the cards in the deck. In a future installment, we will act on this data; for now, we simply log it to the console. Finally, we need to bootstrap the whole process. It works! The next step in a future article will be to iterate over these items and to do something with them. August 1, Share on Facebook.

Share on Twitter.Ways to provide public data are quickly evolving, and you need to offer data in a simple and powerful API. You might have some questions about these tools, which we will answer in the details below. Javascript is an ever evolving language with many versions of a library or framework. It can be quite difficult to always update packages and versions. Here is where nvm comes into play.

It will describe what packages we need to run the server, how to run the server from the cli, and store what version of our code we are developing. Running the above init command will ask you some questions, such as, what you want to name the project, licenses, and version.

This will create a file called package. Express is a simple router for Node. It allows a developer to create simple endpoints quickly. There are many routers for Node. It is best practice, when creating an API, to version your endpoints, that way you can maintain compatibility with older services, while continuing to improve your API.

The production URL will be whatever domain you set up. We need to create a router, and define our endpoints, that will be used to read and create football player statistics. Since this is a training example, we will store all entries in a JSON file. In a real-world application, we would probably use a database instead. First we need to create an Express router.

This example will just create a basic router. In the next example we will start creating the endpoints needed in our API. It will read in the stats JSON file and locate the player.

If it successfully found the player, the code will call res. If the player cannot be found, the method returns the error message and status code Player stats not found. This method will accept an id, wins, lossesand points scored from the request body.

When calling the JSON. Then when saving the data back into the file, we need to call JSON. It will read in the data from the JSON file and append the new player stats, and will return with a status code of This method will accept the players id in the url, and a request body with id, wins, losses, and points scored.

Much like the POST request it will read in the stats data, find the correct player and update their stats. If the record cannot be found, the method returns the error message and appropriate status Player stats not found. If the record cannot be found, the method returns the error message and status code Player stats not found.

Heroku is a service that will let us deploy our API to the public so it anyone can discover and consume our data. Click to to get learn more about getting started with Node. Before we can deploy to Heroku we need to register for a Heroku account and install the command line tools. This will tell Heroku that we want to start a web service, and start the application by calling the index.

We need to create our Heroku application by running the command, this will provision the application for us:. This will push our code to the repository in Heroku, and begin the process of starting our API service. Now our service should be up and running.

This will return the player stats with the id ofand now we can confirm that our API is now up and running. Click here to get started with RapidAPI. While this was an example of building an API, things to consider are connecting to a production database and scaling the Node.The great benefits on that are: you can manipulate natively JSON, write in the same language UI and back-end and think asynchronously natively. To run it just copy and save to a file call. Thanks Loutilities for this example of adding reqGet.

Hi Giulioro, your post was helpful thanks. It seems there must be some libraries available for making REST calls even simpler. Let us know if you are using anything higher level.

The example is at low level. It will follow a post about that Thanks for the comment Giulio. May be there is one of your node module in debug mode or something similar?

Node.js - RESTful API

I will try to find out what my node. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email.

node js call rest api get

Notify me of new posts via email. Write a comment if you need help! Rate this:. Share this: Tweet. Share on Tumblr. Like this: Like Loading Yes, agreed, I did that with a little help from underscore.

This is the response of graph. Here is the test. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email required Address never made public. Name required. Post was not sent - check your email addresses!

node js call rest api get

Sorry, your blog cannot share posts by email.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

First, we start with an Express web server. Then we define routes for handling all CRUD operations including custom finder. We need also to install necessary modules: expresssequelizemysql2 and body-parser on our project. What we are doing here: — import expressbody-parser and cors modules:. In the root folder, we create a separate config folder for configuration with db. The first five parameters are for MySQL connection. These columns will be generated automatically: idtitledescriptionpublishedpublisher, createdAtupdatedAt.

On that function we use request. Note : In development, you may need to drop existing tables and re-sync database. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. JavaScript Branch: master. Find file. Sign in Sign up. Go back.A REST resource is an abstraction of a piece of information or an action, such as a single data record, a collection of records, or a query.

Request headers specify metadata for the request. The request body specifies data for the request, when necessary. The text in the text box represents a resource URI.

Node.js - RESTful API

For convenience, the top-level domain is omitted from the displayed URI. This resource, when combined with the GET method, returns metadata about an object and its fields.

Now make sure that the GET method is selected, and click Execute.

3.1 API calls from (Weather data from Dark Sky) - Working with Data and APIs in JavaScript

Good work, captain. The Account metadata appears on the screen. And Workbench has nicely formatted the response. Your request headers look like this. Click Execute. The raw XML response is returned.

Click Headers. Your request looks like this.

Creating a Secure REST API in Node.js

You see a response such as the following. If success: truethe account was created with the returned ID. Expand the errors folder to check for errors.

Uh, oh. Your expanded response looks like this. Make sure that the GET method is selected, and click Execute. Expand the records folder. Do you see a folder with the name of the first account we created, NewAccount1? Click it. Now click the attributes folder. Next to url is the resource URI of the account that was returned. Your response looks something like this. When you write an integration, you can grab this URI from the response to access more details about that account.

Remember, this module is meant for Salesforce Classic. When you launch your hands-on org, switch to Salesforce Classic to complete this challenge. Use the describe resource. You use a resource to interact with your Salesforce org.


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