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Additional resources for Beginning JSP, JSF and Tomcat: Java Web Development
However, the code in Listing 1-4 shows you how to recognize the most widely used browsers. println("
" + userAgent); You will see what information is contained in the request. It also tells you whether the browser is running on a Windows system or a Mac. Figure 1-10 shows the generated page as it appears in a browser. Figure 1-10. 1 is consistent with the host localhost. And just in case you want to see that the HTML is indeed dynamic, check out Figure 1-11. jsp to identify Internet Explorer is the official one provided by Microsoft.
This is entirely due to the different number of characters used for the boundaries. jsp. 42 CHAPTER 2 JSP ELEMENTS Figure 2-9. jsp The response Object The response variable gives you access within your JSP page to the HTTP response to be sent back to the client. ServletResponse. The HttpServletResponse interface includes the definition of 41 status codes (of type public static final int) to be returned to the client as part of the response. The HTTP status codes are all between 100 and 599. The range 100–199 is reserved to provide information, 200–299 to report successful completion of the requested operation, 300–399 to report warnings, 400–499 to report client errors, and 500–599 to report server errors.
As directives only play a role when a JSP page is re-compiled after you modify it, they have no specific effect on the individual HTML responses. There are three directives that you can use in JSP pages: page, include, and taglib. ] %> The page Directive The page directive defines several page-dependent properties expressed through attributes. ). You can write more than one page directive in a JSP page, and they will all apply. Their order or position within the page is generally irrelevant. This directive is used in all JSP pages.