Introduction to RESTful Webservice
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This document introduces RESTful web services. It discusses the REST architectural style and its key principles: using HTTP methods explicitly to manipulate resources, being stateless, using directory structure-like URIs, and transferring resources with any valid MIME type. The principles are illustrated with examples of adding, retrieving, updating, and deleting resources using the HTTP methods POST, GET, PUT, and DELETE.
Introduction to RESTful Webservice
- 1. Introduction to RESTful Webservice Eftakhairul Islam Jr. Software Engineer Right Brain Solution Ltd. email: [email protected] web: http://eftakhairul.com
- 3. Webservice Design Models XML RPC SOAP REST phpXpert Seminar 2011 3
- 4. Inside RESTful Webservice? Not Techology and not even protocol Software archetechtural principle Resouces transfer over HTTP phpXpert Seminar 2011 4
- 5. Basic Design Principles Of REST 1. HTTP methods explicitly 2. Be stateless 3. Directory structurelike URIs 4. Transfer resources by any valid MIME type supported by the web service. phpXpert Seminar 2011 5
- 6. HTTP Methods Explicitly Add Resources POST http://api.linkedin.com/v1/people/123/friends ContentType: application/xml <friend uri=“urn:linkedin:v1:people/888”/> phpXpert Seminar 2011 6
- 7. HTTP Methods Explicitly Retrieve Resources GET http://api.linkedin.com/v1/people/123 Output: <?xml version="1.0" encoding="UTF8"?> <person> <id>123</id> <firstname>Sakib</firstname> <lastname>Stein</lastname> <connections total="200"> … </person> phpXpert Seminar 2011 7
- 8. HTTP Methods Explicitly Update Resources PUT http://api.linkedin.com/v1/people/123 ContentType: application/xml <person> <name>Sakib Mahmud</name> <bestfriend uri=“urn:linkedin:v1:people/999”/> <photo xsi:nil=“true”/> </person> phpXpert Seminar 2011 8
- 9. HTTP Methods Explicitly Delete Reasource DELETE http://api.linkedin.com/v1/people/123/friends/456 Output: Friend:456 will be deleted from linkedin. phpXpert Seminar 2011 9
- 10. Be Stateless Stateful design (NonREST): previousPage++ Client Server nextPage = previousPage return nextPage phpXpert Seminar 2011 10
- 11. Be Stateless Stateless design (REST): GET /resources/?page=2 HTTP/1.1 <?xml version= ”1.0” ?> <rsp page=”2” nextPage=”3”> Client <resource id = ''11/> Server <resource id = ''12”/> . .. </rsp> phpXpert Seminar 2011 11
- 12. Directory Structurelike URIs http://example.com/topics/{topic_name} http://graph.facebook.com/10150224661566729 http://twitter.com/statuses/user_timeline.xml? id=eftakhairul phpXpert Seminar 2011 12
- 13. Transfer Resources By Any Valid MIME Type Mostly Used XML JSON XHTML Any other valid contend type phpXpert Seminar 2011 13
- 14. Thank You Please Stop Software Piracy, Save Developer Use FOSS or Genuine Software phpXpert Seminar 2011 14