How to use RESTclient to get access token from WSO2 Identity Server

Access token can be retrieve in different ways. This blog is explained the way you can get access token using cURL command. As a next step, I'm going to explain the way you can retrieve an access token using Advance REST client(Firefox plugin).

Step 1 :-

First create a service provider in WSO2 Identity server.

Register a new application by providing callback url and allowed grant types. You must tick a password grant type because I'm going to get an access token using password grant type

After above configurations are done. You can see the generated client key and secret as below

Now you have client key and client secret for particular application. That means, you have completed the first step.

Step 2 :-

Get the base64 encoded value for client key and secret. before get the encoded value, client key and secret should be separated by colon.

<client_key>:<client_secret>

VbUbPR4a5c8wSIlRFfVq9j3UYCka:KBkyfyEtop2pOvOuiODCZIHqN0Ma

This is the base64 encoded value for above string.

VmJVYlBSNGE1Yzh3U0lsUkZmVnE5ajNVWUNrYTpLQmt5ZnlFdG9wMnBPdk91aU9EQ1pJSHFOME1h

Step 3 :-

Install advance REST client in to Firefox.

Select Method as POST
URL :- https://localhost:9443/oauth2/token

Click on headers and add custom header as below

Name :- Authorization
Value :- Basic VmJVYlBSNGE1Yzh3U0lsUkZmVnE5ajNVWUNrYTpLQmt5ZnlFdG9wMnBPdk91aU9EQ1pJSHFOME1h

Add content type as a custom header

Name :- Content-Type
Value :- application/x-www-form-urlencoded

Add rest of the url in to the body

grant_type=password&username=admin&password=admin

and click on the send button. You could see below result with the required response.

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