|CGI Programming in Java|
|Java Programming Resources home.||Core Web Programming home.|
If you are new to CGI, I very strongly recommend that you consider Java servlets and JavaServer Pages (JSP) instead of "regular" CGI. Please see my tutorial on Java servlets and JSP 1.0 for more detail.
For more info on CGI, see the CGI book shelf.
|Java Source||Description||On-Line Example|
|SearchYahoo.java. Requires SearchService.java.||A simple example of an applet as a CGI client that works like an HTML form, sending GET data and having the browser display the results. This one talks to the Yahoo! search engine.||SearchYahoo.html|
|SearchExcite.java. Requires SearchService.java.||Another example of an applet as a CGI client. This one talks to the Excite search engine, demonstrating one advantage of using Java instead of forms: you can more easily reuse code in other applications (this one extends the same class that the Yahoo applet did).||SearchExcite.html|
|ShowFile.java||An applet that sends data via GET and then reads the results itself (rather than having the browser display results).||ShowFile.html|
|Weather.java. The client-side (applet) requires CityChooser.java and WeatherPanel.java. The server-side is answered by the WeatherInfo script, which then invokes WeatherInfo.java.||An applet that sends data via POST and then reads the result.||Weather.html|
|Shell Script Interface|
|CgiHello||N/A||An extremely simple CGI Script that outputs "Hello, World".||CgiHello|
|ShowData||N/A||A simple CGI script that shows any attached data.||ShowData|
|CgiGet||CgiGet.java. Requires CgiShow.java. Note that some browsers will try to interpret the HTML strings in the print statements and the result may be formatted strangely when viewed in the browser. But you can save the file to disk to edit it normally.||A simple script that passes the query data from the QUERY_STRING variable to a Java program that builds a page showing the data supplied.||CgiGet|
|CgiCommandLine||CgiCommandLine.java||A simple script that passes the command-line data to a Java program that builds a page showing the data supplied. Arguments are separated by plus signs ("+") and cannot contain an equals sign ("=").||CgiCommandLine|
|IsIndex||IsIndex.java||A script that passes the data to a Java program that builds an HTML document that uses ISINDEX. Data-entry page or results page is built depending on whether any data is supplied.||IsIndex|
|CgiPost||CgiPost.java||A script that invokes a Java program without passing any data to it. The program reads data from standard input.||CgiPost.html|
|ShowParse||ShowParse.java. Requires QueryStringParser.java, CgiParser.java, LookupTable.java, URLDecoder.java, and StringVector.java.||A script that passes data to a Java program that separates the various attached variables, URL decodes their values, and produces a table of the results. Can accept GET or POST.||ShowParse version using GET. See below for a version that sends POST data.|
|ShowParse||ShowParse.java. Requires QueryStringParser.java, CgiParser.java, LookupTable.java, URLDecoder.java, and StringVector.java.||A script that passes data to a Java program that separates the various attached variables, URL decodes their values, and produces a table of the results. Can accept GET or POST.||AdBuilder.html; sends POST data to ShowParse. See above for a version that sends GET data.|
|CssTest||CssTest.java. Requires CssChoices.java, CookieParser.java, CgiParser.java, LookupTable.java, and URLDecoder.java.||A script that passes data to a Java program that builds a page to let you test out cascading style sheet properties. Properties selected are stored as cookies, which are parsed and used as defaults in later sessions.||CssTest|
Java is a trademark of Sun Microsystems. The original of this document can be found at http://www.apl.jhu.edu/~hall/java/CGI-with-Java. 1996-1998 Marty Hall (email@example.com).