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JSP

Java Server Pages

JSP: Introducci贸n

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JSP: Introducci贸n

Elementos JSP + !* 3

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Sintaxis de JSP

JSP: Sintaxis <%= expression %>; 64 & 6 & 7 <jsp:expression> expression </jsp:expression> & request, response, out, session, application, config.pageContext <% code %>; 6 8 & 6 & 7 <jsp:scriptlet> code </jsp:scriptlet>.


JSP: Sintaxis <%! code %> 6 & . 8 & ! $ & - 8 6 & 7 <jsp:declaration> code </jsp:declaration>.

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<%@ directive att="val" %>

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attribute1="value1“ attribute2="value2“ ... attributeN="valueN" %>

JSP: Sintaxis <%-- comment --%> ( & ! 4 - comment -->.

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JSP: Expresiones 67*<6!# =96! !

<%= expresi贸n %>

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Your hostname: <%= request.getRemoteHost() %>

JSP: Expresiones 6

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<jsp:expression> Expresi贸n Java </jsp:expression>

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Ejemplo. Expresión JSP 4 6

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JSP: Scriptlets !(<# * 6!

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<html> <% for ( int i = 0 ; i < 10 ; i ++ ) out.println(“<br>”+i);%> </html>


JSP: Scriptlets <% if (Math.random() < 0.5) { %> Have a <B>nice</B> day! <% } else { %> Have a <B>lousy</B> day! <% } %>

B if (Math.random() < 0.5) { out.write("Have a <B>nice</B> day!");} else { out.write("Have a <B>lousy</B> day!");}

JSP: Scriptlets 6

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<jsp:scriptlet> C贸digo </jsp:scriptlet>

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JSP: Declaraciones 36( )<)(# =96!

<%! codigo %>

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<%! private int accessCount = 0; %> Accesses to page since server reboot: <%= ++accessCount %>

JSP: Declaraciones ( 6

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<jsp:declaration> C贸digo </jsp:declaration>

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JSP: Directivas ) &

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<%@ directive attribute="value" %>

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attribute1="value1“ attribute2="value2“ ... attributeN="valueN" %>

JSP: Directivas *)C6 import="package.class“ import="package.class1,...,package.classN/ 6 6

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JSP: Directivas session="true|false". & ! ' 4 . 4 & .-

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JSP: Directivas extends="package.class". 6 & & 3 4 .& $ info="message". 3 8 ! & # errorPage="url". 6 $ isErrorPage="true|false". # : & language="java". 6 $ * . 8 & :

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Ejercicio

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JSP: Directivas # 9(

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JSP: Directivas 4 7

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<%@ page import="java.util.*" %> <jsp:directive.page import="java.util.*" />

JSP: Variables predefinidas !" % <

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JSP: Variables predefinidas '%&$6

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Acciones JSP

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JSP: Acciones 4 7 ! &

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JSP: Acciones: include '

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JSP: Acciones: useBean '

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JSP: Acciones: useBean ; <jsp:useBean id="name" class="package.class" /


JSP: Acciones: useBean id 3

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JSP: Acciones: setProperty 3

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JSP: Acciones: setProperty Name

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JSP: Acciones: setProperty param 6 &

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name="orderBean“ property="numberOfItems" param="numItems" />

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Comunicación entre jsp Posibles Ámbitos

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Desarrollo de TAG-LIBs * * 3 3 * A

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Desarrollo de TAG-LIBs

Referencias R R R

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JSP  

JSP (Java Server Pages). Tecnologías Java en el lado del servidor.

JSP  

JSP (Java Server Pages). Tecnologías Java en el lado del servidor.

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