org.apache.taglibs.request
Class ExistsQueryStringTag
java.lang.Object
javax.servlet.jsp.tagext.TagSupport
org.apache.taglibs.request.ExistsQueryStringTag
- All Implemented Interfaces:
- javax.servlet.jsp.tagext.IterationTag, java.io.Serializable, javax.servlet.jsp.tagext.Tag
- public class ExistsQueryStringTag
- extends javax.servlet.jsp.tagext.TagSupport
JSP Tag existsquerystring, used to determine if an HttpServletRequest
querystring parameter exists.
Includes the body of the tag if the querystring parameter exists.
You can set the optional tag querystring value to true or
false. The body of the tag is included if existsquerystring matches
the value.
JSP Tag Lib Descriptor
<name>existsquerystring</name>
<tagclass>org.apache.taglibs.request.ExistsQueryStringTag</tagclass>
<bodycontent>JSP</bodycontent>
<info>Includes the body of the tag if the request querystring parameter exists.</info>
<attribute>
<name>name</name>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<attribute>
<name>value</name>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
- Author:
- Glenn Nielsen
- See Also:
- Serialized Form
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 |
Method Summary |
int |
doStartTag()
Includes the body of the tag if the request querystring parameter exists. |
void |
setName(java.lang.String str)
Set the required tag attribute name. |
void |
setValue(boolean value)
Set the optional tag attribute value to true or false. |
Methods inherited from class javax.servlet.jsp.tagext.TagSupport |
doAfterBody, doEndTag, 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 |
ExistsQueryStringTag
public ExistsQueryStringTag()
doStartTag
public final int doStartTag()
throws javax.servlet.jsp.JspException
- Includes the body of the tag if the request querystring parameter exists.
- Returns:
- SKIP_BODY if existsquerystring doesn't match value, EVAL_BODY_include if existsquerystring matches value
- Throws:
javax.servlet.jsp.JspException
setName
public final void setName(java.lang.String str)
- Set the required tag attribute name.
setValue
public final void setValue(boolean value)
- Set the optional tag attribute value to true or false.
Copyright ? 2000-2004 The Apache Software Foundation. All Rights Reserved.