Презентация, доклад на тему Работа с WEB & Java. JSP (для студентов старших курсов университетов)

статического HTML. Вы, как обычно, пишете обычный код в HTML, используя для этого любую программу для создания Web страниц. Затем вы заключаете динамическую часть кода в специальные таги, большинство которых начинаются с "<%" и завершаются "%>".

name.length() == 0) {
            %>
            Hello, world !
            <%            } else {
            %>
            Hello, world ! I'm <%= name%>
            <%
        }
            %>
        
    

World!
<% out.println("Your IP address is " + request.getRemoteAddr()); %>

= 0; %>
<%! int a, b, c; %>
<%! Circle a = new Circle(2.0); %>

date: <%= (new java.util.Date()).toLocaleString()%>

Today's date: 21-Sep-2015 21:24:25

A Test of Comments

<%-- This comment will not be visible in the page source --%>

such as scripting language, error page, and buffering requirements.
<%@ include ... %>Includes a file during the translation phase.
<%@ taglib ... %>Declares a tag library, containing custom actions, used in the page

the page is requested
jsp:useBean Finds or instantiates a JavaBean
jsp:setProperty Sets the property of a JavaBean
jsp:getProperty Inserts the property of a JavaBean into the output
jsp:forward Forwards the requester to a new page
jsp:plugin Generates browser-specific code that makes an OBJECT or EMBED tag for the Java plugin
jsp:element Defines XML elements dynamically.
jsp:attribute Defines dynamically defined XML element's attribute.
jsp:body Defines dynamically defined XML element's body.
jsp:text Use to write template text in JSP pages and documents.

request.
response This is the HttpServletResponse object associated with the response to the client.
out This is the PrintWriter object used to send output to the client.
session This is the HttpSession object associated with the request.
application This is the ServletContext object associated with application context.
config This is the ServletConfig object associated with the page.
pageContext This encapsulates use of server-specific features like higher performance JspWriters.
page This is simply a synonym for this, and is used to call the methods defined by the translated servlet class.
Exception The Exception object allows the exception data to be accessed by designated JSP.