Download Apache Jakarta Commons: Reusable Java Components by Will Iverson PDF

By Will Iverson

ISBN-10: 0131478303

ISBN-13: 9780131478305

Iverson, an software improvement perform supervisor, exhibits Java builders the way to take complete good thing about Jakarta Commons. He starts off with an outline of the targets, deploy, and use of the Commons elements, then provides example-rich chapters at the 12 most valuable Commons applications, delivering distinct code samples for each part. The publication could be invaluable for builders development code for front-end net functions, client-side software program, or back-end servers.

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Extra info for Apache Jakarta Commons: Reusable Java Components

Sample text

PrintStackTrace(); } // Set the response label to the returned value. getStatusCode() + ""); // Now, we start building the text to display. StringBuffer response = new StringBuffer(); // First, we loop through the currently set cookies. getResponseBodyAsString()); // Finally, we display the response. toString()); // Some clean-up. DEFAULT_CURSOR); } Listing 3-4 shows the POST request, in this case hard-coded to map to the JSP page shown in Listing 3-2. Note that in this case, a simple POST is usedif you want to upload files, for example, you would use the MultipartPostMethod class instead of PostMethod.

NNTP Implementation There are two JSP pages used to display the NNTP client information. jsp (shown rendered in the browser in Figure 4-4), can be found in Listing 4-3. Listing 4-3. net. NewsgroupInfo class for the information about the groups. Figure 4-6 shows the methods of this class. Figure 4-6. NewsgroupInfo class diagram. jsp page. jsp is shown in Listing 4-4. Listing 4-4. newsgroup=<%=newsgroup%>&article=<%= nextArticle %>">Next -> <% } %> 

<%= header %>

<%= body %>

Now that you've seen the JSP presentation code, let's look at the underlying Java code.

Listing 2-7. HttpServletRequest; /** This static class is used to manage the files posted to the * server. */ public class Files { public static Hashtable getFiles() { return uploadedFiles; } private static Hashtable uploadedFiles = new Hashtable(); /** * List of blocked file extensions taken from the MS security * note posted at... wsh", // Also, don't allow people to upload code! separator"); /** * Used to determine if a file should not be uploaded based on * file extension. endsWith(blockedFileExtensions[i])) return true; } return false; } /** 32 * The base path corresponds to the base directory of the 33 * application context's WEB-INF directory.

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Apache Jakarta Commons: Reusable Java Components by Will Iverson

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