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IST256 : Applications Programming for Information Systems. The HTTP Protocol and Web Services. Agenda. Connection Activity Attendance Teaching: HTTP Web Services Practice Activities (3) Thursday. Connect Activity. https://goo.gl/TJOuaW Sign in with your NetID and Password
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IST256 : Applications Programming for Information Systems The HTTP Protocol and Web Services
Agenda • Connection Activity • Attendance • Teaching: • HTTP • Web Services • Practice Activities (3) • Thursday
Connect Activity • https://goo.gl/TJOuaW • Sign in with your NetID and Password • Enter Today’s PIN 9901
HTTP The Protocol of The Web • When you type a URL into your browser you’re making a request. • The site processing your request sends a response. • Part of the response is the status code. This indicates “what happened” • The other part of the response is content(HTML) which is rendered by the browser. • HTTP is a text based protocol.
Watch Me Code A Non-Python Demo of HTTP • What happens when you request a site? Like syr.edu?
What is a Web API? • An API is short for Application Programming Interface. • A Web API uses HTTP Protocolto communicate with your program. • Web API’s can return data in many formats. We’ll focus on the JSON (JavaScript Object Notation) format which converts easily to Python listsand dictionaries.
Watch Me Code Google’s Geocoding API • Get a GPS coordinate (Latitude and Longitude) for a City or Street Address • HTTP GET: http://maps.googleapis.com/maps/api/geocode/json?address=addr
Web API: Weather Forecasting • https://darksky.net/dev • Darksky.net / Forecast IO • Sign up for an API key • 1000 free requests / day
Watch Me Code Let’s Continue Our Geocode Example: • Get Current weather for Lat/Lng • Refactor as a function • Write a program to ask for a location, show current conditions for location!
Other Web API’s • https://itunes.apple.com/search?term - iTunes Search • https://swapi.co/ - Star Wars API • https://www.omdbapi.com/ - Movie Database API • http://www.pokeapi.co/ - Pokemon API • http://open-notify.org/ - Space API • http://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php- Earthquake API
Help me Code Let’s write a program to ask you for a sub-Reddit and then print the titles of the top stories in that sub-Reddit Example API Call: (news) sub-Reddit https://www.reddit.com/r/news/top.json • First we get it to work with this url • Then let’s write the full program
Conclusion Activity Your “Ticket Out” • http://bit.ly/2eBCPM7 • The activity will be effort graded.