Spring Framework

org.springframework.web.servlet.tags
Class EvalTag

java.lang.Object
  extended by javax.servlet.jsp.tagext.TagSupport
      extended by org.springframework.web.servlet.tags.RequestContextAwareTag
          extended by org.springframework.web.servlet.tags.HtmlEscapingAwareTag
              extended by org.springframework.web.servlet.tags.EvalTag
All Implemented Interfaces:
java.io.Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag, javax.servlet.jsp.tagext.TryCatchFinally

public class EvalTag
extends HtmlEscapingAwareTag

JSP tag for evaluating expressions with the Spring Expression Language (SpEL). Supports the standard JSP evaluation context consisting of implicit variables and scoped attributes.

Since:
3.0.1
Author:
Keith Donald, Juergen Hoeller
See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE
 
Fields inherited from class javax.servlet.jsp.tagext.TagSupport
id, pageContext
 
Fields inherited from interface javax.servlet.jsp.tagext.IterationTag
EVAL_BODY_AGAIN
 
Fields inherited from interface javax.servlet.jsp.tagext.Tag
EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE
 
Constructor Summary
EvalTag()
           
 
Method Summary
 int doEndTag()
           
 int doStartTagInternal()
          Called by doStartTag to perform the actual work.
 void setExpression(java.lang.String expression)
          Set the expression to evaluate.
 void setJavaScriptEscape(java.lang.String javaScriptEscape)
          Set JavaScript escaping for this tag, as boolean value.
 void setScope(java.lang.String scope)
          Set the scope to export the evaluation result to.
 void setVar(java.lang.String var)
          Set the variable name to expose the evaluation result under.
 
Methods inherited from class org.springframework.web.servlet.tags.HtmlEscapingAwareTag
isDefaultHtmlEscape, isHtmlEscape, setHtmlEscape
 
Methods inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
doCatch, doFinally, doStartTag, getRequestContext
 
Methods inherited from class javax.servlet.jsp.tagext.TagSupport
doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

EvalTag

public EvalTag()
Method Detail

setExpression

public void setExpression(java.lang.String expression)
Set the expression to evaluate.


setVar

public void setVar(java.lang.String var)
Set the variable name to expose the evaluation result under. Defaults to rendering the result to the current JspWriter.


setScope

public void setScope(java.lang.String scope)
Set the scope to export the evaluation result to. This attribute has no meaning unless var is also defined.


setJavaScriptEscape

public void setJavaScriptEscape(java.lang.String javaScriptEscape)
                         throws javax.servlet.jsp.JspException
Set JavaScript escaping for this tag, as boolean value. Default is "false".

Throws:
javax.servlet.jsp.JspException

doStartTagInternal

public int doStartTagInternal()
                       throws javax.servlet.jsp.JspException
Description copied from class: RequestContextAwareTag
Called by doStartTag to perform the actual work.

Specified by:
doStartTagInternal in class RequestContextAwareTag
Returns:
same as TagSupport.doStartTag
Throws:
javax.servlet.jsp.JspException
See Also:
TagSupport.doStartTag()

doEndTag

public int doEndTag()
             throws javax.servlet.jsp.JspException
Specified by:
doEndTag in interface javax.servlet.jsp.tagext.Tag
Overrides:
doEndTag in class javax.servlet.jsp.tagext.TagSupport
Throws:
javax.servlet.jsp.JspException

Spring Framework