programming with google, amazon and ebay
TRANSCRIPT
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Programming with Amazon, Google, and eBay
Chunju Tseng (Lu)[email protected]
http://www.u.arizona.edu/~chunju/age.ppt
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Outline
9/13 (Tuesday)Web Services in a nutshellOverview of Amazon, Google, and eBay APIsLab Session: Web Services Programming
9/15 (Thursday)Back to World Wide Web 101Lab Session: Java Web Programming
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What is Web Services? Web Services:
A new way of reuse/integrate third party softwre or legacy system
No matter where the software is, what platform it residents, or which language it was written in
Based on XML and Internet protocols (HTTP, SMTP…) Benefits:
Ease of integration Develop applications faster
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Web Services Architecture
Simple Object Access Protocol (SOAP) Web Service Description Language
(WSDL) Universal Description, Discovery and
Integration (UDDI)
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New Breeds of Web Services Representational State Transfer (REST)
Use HTTP Get method to invoke remote services (not XML)
The response of remote service can be in XML or any textual format
Benefits: Easy to develop Easy to debug (with standard browser) Leverage existing web application infrastructure
We will focus on REST services programming in the lab session
Really Simple Syndication (RSS) Designed for news-oriented websites to “Push” content
to readers Excellent to monitor new content from websites
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Amazon Web Services (AWS) Amazon E-Commerce Service
Search catalog, retrieve product information, images and customer reviews
Retrieve wish list, wedding registry… Search seller and offer
Alexa Web Information Service Retrieve information such as page rank, related sites
given a target URL Amazon Simple Queue Service
A distributed resource manager to store web services results
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Google Web APIs
Programmatically search web pages using Google
Get information about search result including URL, snippet, title and directory category
Spell-checking and suggestion
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eBay API Buyers:
Get the current list of eBay categories View information about items listed on eBay Display eBay listings on other sites Leave feedback about other users at the
conclusion of a commerce transaction Sellers:
Submit items for listing on eBay Get high bidder information for items you are
selling Retrieve lists of items a particular user is
currently selling through eBay Retrieve lists of items a particular user has bid on
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Other Free Web Services Google Maps API
http://www.google.com/apis/maps/ Crime mapping: http://www.chicagocrime.org/ Fine cheap gas: http://www.mywikimap.com/
Reuters News http://www.microsite.reuters.com/rss/topNews
Shopping Deals http://techbargains.com/rss.xml
MSN Search Engine http://beta.search.msn.com/results.aspx?q=FMD&format=rss
Yahoo Highest-rated News http://rss.news.yahoo.com/rss/highestrated
Yahoo Financial News Search http://news.search.yahoo.com/news/rss?p=YHOO
World Weather RSS Feed http://www.rssweather.com/
XMethods.net http://xmethods.com/
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Lab Session:Amazon, Google, EBay APIs
Required Software: NetBeans IDE Amazon API
(http://www.amazon.com/gp/aws/landing.html) Google API
(http://www.google.com/apis/) Registered with Amazon and Google
Topics: Setup NetBeans Execute Amazon Samples REST with Browser REST with Jakarta HttpClient Programming Google API
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Setup NetBeans with Amazon Assume NetBeans 4.1 is installed
http://www.netbeans.org/ Register Amazon subscription ID
http://www.amazon.com/gp/aws/landing.html Download Amazon Java sample Create NetBeans project Install necessary libraries Execute Amazon code sample
Main.java
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Retrieve Customer Information CustomerContentSearch
Give name to retrieve customer ID CustomerContentLookup
Give customer ID Request WishList information ResponseGroup=CustomerInfo, CustomerLis
ts Receive WishList ID
Use Amazon API Reference!!
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Retrieve Customer WishList and Response Manipulation ListLookup
Give list ID and type to retrieve WishList content with a simple browser (REST)
ResponseGroup=ListItems,ListInfo Result shows in XML format
ListLookup with xml-to-text XSLT Give custom XSL to manipulate response Style=http://www.u.arizona.edu/~chunju/text.xsl&Conten
tType=text/plain ListLookup with xml-to-html XSLT
ResponseGroup=ListItems,ListInfo,Images,SalesRank,ItemAttributes
Style=http://www.u.arizona.edu/~chunju/html.xsl&ContentType=text/html
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Access Amazon REST Service with Jakarta HttpClient Download & install necessary libraries
Jakarta HttpClient, Codec JUnit
Write first Java program in NetBeans Use previous REST invocation strings Print Amazon response in console Resources:
http://jakarta.apache.org/commons/index.html http://www.junit.org/ http://
www.u.arizona.edu/~chunju/HttpClientMain.java
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Programming Google API Download Google Web API
http://www.google.com/apis/ Install Google library Execute Google API demo Write Java codes to search Google
Search Google Access cached pages Keyword suggestion Source:http://www.u.arizona.edu/~chunju/GoogleM
ain.java
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Other Resources Java Web Services Developer Pack
http://java.sun.com/webservices/downloads/webservicespack.html
Consuming Web Services with NetBeans http://www.javapassion.com/planning/handsonbyol
/netbeanswebservices/ XSLT Tutorial
http://www.w3schools.com/xsl/ Lab Session Step-by-step Snapshots
http://www.u.arizona.edu/~chunju/mis531a/
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See you next time!
Questions are welcome
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World Wide Web 101
Web Server
Application Server
ASP, JSP, PHP…
Browser
RendererScriptEngine
Plug-ins
HTML/CSS
JavaScriptVBScript
Flash/Applets
HTTP
request response (HTML)
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Static Web Pages
Browser Internet Explorer, Mozilla Firefox, Netscape
Web Server Apache, IIS
HTML Hypertext Markup Language
HTTP Hypertext Transfer Protocol
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Dynamic Web Pages Application Servers
Tomcat, IIS, mod_php Server side programming languages
ASP, JSP, PHP, cgi, ….. ROR Client side programming languages
JavaScript, VBScript Dynamic HTML, XHTML, CSS Other dynamic contents
Java Applets, ActiveX, Flash
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Rich Interactivity Web - AJAX
AJAX: Asynchronous JavaScript + XML AJAX incorporates:
standards-based presentation using XHTML and CSS; dynamic display and interaction using the Document Object Model; data interchange and manipulation using XML and XSLT; asynchronous data retrieval using XMLHttpRequest; and JavaScript binding everything together.
Examples: http://www.gmail.com http://www.kiko.com
More info: http://www.adaptivepath.com/publications/essays/archives/000385.php
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AJAX Application Model
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Lab Session:Java Web Programming
Required Software: JDK 1.4 or later Apache Tomcat NetBeans IDE (optional)
Topics: Install JDK Install Tomcat First Java Server Page Servlet with NetBeans IDE