Difference between revisions of "Jsp"
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=== directives === | === directives === | ||
| − | <%@ page language="java" %> | + | <%@ page language="java" %> |
| + | |||
| + | XML | ||
| + | <jsp:directive.page pageDirectiveAttrList /> | ||
=== actions === | === actions === | ||
| + | <jsp:forward page="/servlet/login" /> | ||
=== declarations === | === declarations === | ||
<%! x = 4;> | <%! x = 4;> | ||
| − | == Implizite Objekte in Scriptlets == | + | === EL Expressions === |
| − | * page java.lang.Object | + | ${haha} |
| + | |||
| + | == Implizite Objekte in Scriptlets, JSP 2.0 == | ||
| + | * page java.lang.Object, class implementiert Servlet im Servlet Fall. | ||
* out javax.servlet.jsp.JspWriter | * out javax.servlet.jsp.JspWriter | ||
* config javax.servlet.ServletConfig | * config javax.servlet.ServletConfig | ||
| Line 23: | Line 30: | ||
* pageContext javax.servlet.jsp.PageContext | * pageContext javax.servlet.jsp.PageContext | ||
* application javax.servlet.ServletContext | * application javax.servlet.ServletContext | ||
| − | * exception | + | * exception Throwable |
== Importierte Namespaces in Jsps == | == Importierte Namespaces in Jsps == | ||
| Line 49: | Line 56: | ||
* mod | * mod | ||
* or | * or | ||
| + | * and | ||
* not | * not | ||
* == | * == | ||
| Line 63: | Line 71: | ||
* empty | * empty | ||
* A ? B : C | * A ? B : C | ||
| + | |||
| + | == EL reserved words == | ||
| + | * and | ||
| + | * eq | ||
| + | * gt | ||
| + | * true | ||
| + | * instanceof | ||
| + | * or | ||
| + | * ne | ||
| + | * le | ||
| + | * false | ||
| + | * empty | ||
| + | * not | ||
| + | * lt | ||
| + | * ge | ||
| + | * null | ||
| + | * div | ||
| + | * mod | ||
== Implizite EL Objekte == | == Implizite EL Objekte == | ||
| Line 74: | Line 100: | ||
* pageScope | * pageScope | ||
* requestScope | * requestScope | ||
| − | * | + | * sessionScope |
* applicationScope | * applicationScope | ||
| + | |||
| + | == Tag return values == | ||
| + | === doStartTag() === | ||
| + | * Tag.EVAL_BODY_INCLUDE | ||
| + | * BodyTag.EVAL_BODY_BUFFERED | ||
| + | * SKIP_BODY | ||
| + | |||
| + | === doEndTag() === | ||
| + | * SKIP_BODY | ||
| + | * EVAL_PAGE | ||
| + | |||
| + | == Reihenfolge der Listeners == | ||
| + | === Session-Attributes === | ||
| + | 1. HttpSessionBindingListener | ||
| + | 2. HttpSessionAttributeListener | ||
== Resourcen == | == Resourcen == | ||
* [http://java.sun.com/products/jsp/syntax/2.0/syntaxref20.html jsp 2.0 referenz] | * [http://java.sun.com/products/jsp/syntax/2.0/syntaxref20.html jsp 2.0 referenz] | ||
* [http://java.sun.com/javaee/5/docs/api/ javadoc] | * [http://java.sun.com/javaee/5/docs/api/ javadoc] | ||
| + | * [http://java.sun.com/dtd/web-app_2_3.dtd web-app_2_3.dtd] | ||
Latest revision as of 11:54, 5 September 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, JSP 2.0
- page java.lang.Object, class implementiert Servlet im Servlet Fall.
- 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 Throwable
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
EL reserved words
- and
- eq
- gt
- true
- instanceof
- or
- ne
- le
- false
- empty
- not
- lt
- ge
- null
- div
- mod
Implizite EL Objekte
- pageContext (pageContext.servletContext, pageContext.session, pageContext.request, pageContext.response)
- param
- paramValues
- header
- headerValues
- cookie
- initParam
- pageScope
- requestScope
- sessionScope
- applicationScope
Tag return values
doStartTag()
- Tag.EVAL_BODY_INCLUDE
- BodyTag.EVAL_BODY_BUFFERED
- SKIP_BODY
doEndTag()
- SKIP_BODY
- EVAL_PAGE
Reihenfolge der Listeners
Session-Attributes
1. HttpSessionBindingListener 2. HttpSessionAttributeListener
