org.springframework.web.servlet.tags
Class RequestContextAwareTag
java.lang.Object
javax.servlet.jsp.tagext.TagSupport
org.springframework.web.servlet.tags.RequestContextAwareTag
- All Implemented Interfaces:
- Serializable, IterationTag, JspTag, Tag, TryCatchFinally
- Direct Known Subclasses:
- HtmlEscapeTag, HtmlEscapingAwareTag
public abstract class RequestContextAwareTag
- extends TagSupport
- implements TryCatchFinally
Superclass for all tags that require a RequestContext.
The RequestContext instance provides easy access
to current state like the
WebApplicationContext,
the Locale, the
Theme, etc.
Mainly intended for
DispatcherServlet requests;
will use fallbacks when used outside DispatcherServlet.
- Author:
- Rod Johnson, Juergen Hoeller
- See Also:
RequestContext,
DispatcherServlet,
Serialized Form
| 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 |
REQUEST_CONTEXT_PAGE_ATTRIBUTE
public static final String REQUEST_CONTEXT_PAGE_ATTRIBUTE
PageContext attribute for page-level
RequestContext instance.
- See Also:
- Constant Field Values
logger
protected final Log logger
- Logger available to subclasses
RequestContextAwareTag
public RequestContextAwareTag()
doStartTag
public final int doStartTag()
throws JspException
- Create and expose the current RequestContext.
Delegates to
doStartTagInternal() for actual work.
- Specified by:
doStartTag in interface Tag- Overrides:
doStartTag in class TagSupport
- Throws:
JspException- See Also:
REQUEST_CONTEXT_PAGE_ATTRIBUTE,
JspAwareRequestContext
getRequestContext
protected final RequestContext getRequestContext()
- Return the current RequestContext.
doStartTagInternal
protected abstract int doStartTagInternal()
throws Exception
- Called by doStartTag to perform the actual work.
- Returns:
- same as TagSupport.doStartTag
- Throws:
Exception - any exception, any checked one other than
a JspException gets wrapped in a JspException by doStartTag- See Also:
TagSupport.doStartTag()
doCatch
public void doCatch(Throwable throwable)
throws Throwable
- Specified by:
doCatch in interface TryCatchFinally
- Throws:
Throwable
doFinally
public void doFinally()
- Specified by:
doFinally in interface TryCatchFinally
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