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Programming with Amazon,
Google, and eBay
Chunju Tseng (Lu)
[email protected]
http://www.u.arizona.edu/~chunju/age.ppt
Outline
9/13 (Tuesday)
Web Services in a nutshell
Overview of Amazon, Google, and eBay APIs
Lab Session: Web Services Programming
9/15 (Thursday)
Back to World Wide Web 101
Lab Session: Java Web Programming
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
Web Services Architecture
 Simple Object Access Protocol (SOAP)
 Web Service Description Language
(WSDL)
 Universal Description, Discovery and
Integration (UDDI)
New Breeds of Web Services
 Representational State Transfer (REST)
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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)
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Designed for news-oriented websites to “Push” content
to readers
Excellent to monitor new content from websites
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
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
eBay API
 Buyers:
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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
Other Free Web Services
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Google Maps API
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http://www.google.com/apis/maps/
Crime mapping: http://www.chicagocrime.org/
Fine cheap gas: http://www.mywikimap.com/
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http://www.microsite.reuters.com/rss/topNews
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http://techbargains.com/rss.xml
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http://beta.search.msn.com/results.aspx?q=FMD&format=rss
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http://rss.news.yahoo.com/rss/highestrated
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http://news.search.yahoo.com/news/rss?p=YHOO
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http://www.rssweather.com/
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http://xmethods.com/
Reuters News
Shopping Deals
MSN Search Engine
Yahoo Highest-rated News
Yahoo Financial News Search
World Weather RSS Feed
XMethods.net
Lab Session:
Amazon, Google, EBay APIs

Required Software:

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NetBeans IDE
Amazon API
(http://www.amazon.com/gp/aws/landing.html)

Google API
(http://www.google.com/apis/)
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Registered with Amazon and
Google
Topics:
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Setup NetBeans
Execute Amazon Samples
REST with Browser
REST with Jakarta HttpClient
Programming Google API
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
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Download Amazon Java sample
Create NetBeans project
Install necessary libraries
Execute Amazon code sample
 Main.java
Retrieve Customer Information
 CustomerContentSearch
 Give name to retrieve customer ID
 CustomerContentLookup
 Give customer ID
 Request WishList information
 ResponseGroup=CustomerInfo,
CustomerLists
 Receive WishList ID
 Use Amazon API Reference!!
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&C
ontentType=text/plain
 ListLookup with xml-to-html XSLT
 ResponseGroup=ListItems,ListInfo,Images,SalesRank
,ItemAttributes
 Style=http://www.u.arizona.edu/~chunju/html.xsl&C
ontentType=text/html
Access Amazon REST Service with
Jakarta HttpClient
 Download & install necessary libraries
 Jakarta HttpClient, Codec
 JUnit
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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/HttpClientMa
in.java
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
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Search Google
Access cached pages
Keyword suggestion
Source:http://www.u.arizona.edu/~chunju/Goog
leMain.java
Other Resources
 Java Web Services Developer Pack
 http://java.sun.com/webservices/downloads/we
bservicespack.html
 Consuming Web Services with NetBeans
 http://www.javapassion.com/planning/handsonb
yol/netbeanswebservices/
 XSLT Tutorial
 http://www.w3schools.com/xsl/
 Lab Session Step-by-step Snapshots
 http://www.u.arizona.edu/~chunju/mis531a/
See you next time!
Questions are welcome
World Wide Web 101
Flash/
Applets
Plug-ins
JavaScript
VBScript
HTML/
CSS
ASP, JSP, PHP…
Script
Renderer
Engine
Application Server
Browser
Web Server
HTTP
request
response (HTML)
Static Web Pages
 Browser
 Internet Explorer, Mozilla Firefox,
Netscape
 Web Server
 Apache, IIS
 HTML
 Hypertext Markup Language
 HTTP
 Hypertext Transfer Protocol
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
Rich Interactivity Web - AJAX
 AJAX: Asynchronous JavaScript + XML
 AJAX incorporates:
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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:
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http://www.gmail.com
http://www.kiko.com
More info:
http://www.adaptivepath.com/publications/essays/archives/000385.php
AJAX Application Model
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