Difference between revisions of "Jsp"
(→Tag return values) |
(→Tag return values) |
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== Tag return values == | == Tag return values == | ||
| − | * EVAL_BODY_INCLUDE | + | === doStartTag() === |
| + | * Tag.EVAL_BODY_INCLUDE | ||
| + | * BodyTag.EVAL_BODY_BUFFERED | ||
| + | * SKIP_BODY | ||
| + | |||
| + | === doEndTag() === | ||
| + | * SKIP_BODY | ||
== Reihenfolge der Listeners == | == Reihenfolge der Listeners == | ||
Revision as of 19:08, 11 January 2009
Contents
Elemente in JSPs
scriplets
<% int x = 5; %>
expressions
<%= x %>
directives
<%@ page language="java" %>
XML
<jsp:directive.page pageDirectiveAttrList />
actions
<jsp:forward page="/servlet/login" />
declarations
<%! x = 4;>
EL Expressions
${haha}
Implizite Objekte in Scriptlets
- page java.lang.Object
- out javax.servlet.jsp.JspWriter
- config javax.servlet.ServletConfig
- request javax.servlet.http.HttpServletRequest
- response javax.servlet.http.HttpServletResponse
- session javax.servlet.http.HttpSession
- pageContext javax.servlet.jsp.PageContext
- application javax.servlet.ServletContext
- exception
Importierte Namespaces in Jsps
- java.lang.*
- javax.servlet.*
- javax.servlet.jsp.*
- javax.servlet.http.*
Methoden in JSP Servlets
- jspInit()
- jspDestroy()
- _jspService(), kann nicht ueberschrieben werden
- getParameter()
EL Operators
- &&
- +
- *
- -
- %
- ||
- !
- div
- mod
- or
- and
- not
- ==
- eq
- ne
- <
- lt
- >
- gt
- <=
- ge
- >=
- le
- empty
- A ? B : C
Implizite EL Objekte
- pageContext (pageContext.servletContext, pageContext.session, pageContext.request, pageContext.response)
- param
- paramValues
- header
- headerValues
- cookie
- initParam
- pageScope
- requestScope
- sessoionScope
- applicationScope
Tag return values
doStartTag()
- Tag.EVAL_BODY_INCLUDE
- BodyTag.EVAL_BODY_BUFFERED
- SKIP_BODY
doEndTag()
- SKIP_BODY
Reihenfolge der Listeners
Session-Attributes
1. HttpSessionBindingListener 2. HttpSessionAttributeListener
