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RESTful Web Services - POST, PUT, GET, DELETE

Web services are very common these days as everything or most of the implementation is now API based. Every social network is providing API for fetching their data. Like if you take a case of TWITTER, it provides it's API to fetch different data related to user or for analytic. There are 2 types of web services namely:
  • SOAP
  • REST
SOAP is based on WSDL and return data in XML format. But I will not talk about it here. I will be discussing about REST, an acronym for REpresentational State Transfer methods. RESTful web services are very simple to learn and implement. They are basically stateless. It is based on HTTP URI and everything is implemented using URL. In this post I will explain about the four methods that are used with REST.
  • POST
  • PUT
  • GET
  • DELETE
Let's dive deep into each of these methods of the REST.


POST
It is used for creating a new entity. It is basically used with form i.e. whenever we want to submit data.
Ex: POST /items

PUT
It is doing same thing as POST but it usually used for updating entity.
Ex: PUT /items/itemid

GET
This is the method that is used mostly in REST. It will fetch data from back end. The data can be returned in any of the forms like XML, JSON, PDF etc.
Ex: GET /items (fetching multiple items)
GET /items/itemid (fetching a single item)

DELETE
Yes, as already guessed from the name it is used to delete the record.
Ex: DELETE /items/itemid

Helpful Resources:
Jersey is the reference implementation of the JAX RS 2.0 (JSR 339).

POSTMAN It is very good light weight client for testing RESTful web services for Google Chrome and can be downloaded from  here

Hope you enjoyed it.


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