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Node.js REST API Example

This example shows how to implement a simple REST API using Node.js and Docker. The API has five endpoints that all return a simple response in JSON.

  • GET /
  • GET /:id
  • POST /
  • PUT /
  • DELETE /

Build

docker build -t nodejs-rest-api-example .

Run

Run in default port 4000:

docker run -p 4000:4000 -d nodejs-rest-api-example

Run in custom port, e.g., 8080:

docker run -e PORT=8080 -p 8080:8080 -d nodejs-rest-api-example

Test

GET /

curl -i http://localhost:4000/

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json
Date: Tue, 28 Feb 2017 10:38:31 GMT
Connection: keep-alive
Transfer-Encoding: chunked

{"response":"This is GET method."}

GET /:id

curl -i http://localhost:4000/123

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json
Date: Tue, 28 Feb 2017 10:39:04 GMT
Connection: keep-alive
Transfer-Encoding: chunked

{"response":"This is GET method with id=123."}

POST /

curl -i -X POST http://localhost:4000

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json
Date: Tue, 28 Feb 2017 10:38:47 GMT
Connection: keep-alive
Transfer-Encoding: chunked

{"response":"This is POST method."}

PUT /

curl -i -X PUT http://localhost:4000

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json
Date: Tue, 28 Feb 2017 10:40:48 GMT
Connection: keep-alive
Transfer-Encoding: chunked

{"response":"This is PUT method."}

DELETE /

curl -i -X DELETE http://localhost:4000

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json
Date: Tue, 28 Feb 2017 10:41:11 GMT
Connection: keep-alive
Transfer-Encoding: chunked

{"response":"This is DELETE method."}