java.lang.Object
- javax.servlet.jsp.tagext.TagSupport
- - org.springframework.web.servlet.tags.RequestContextAwareTag

所有已实现的接口:
Serializable, IterationTag, JspTag, Tag, TryCatchFinally
直接已知子类:
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.
作者:
Rod Johnson, Juergen Hoeller
另请参阅:
RequestContext, DispatcherServlet, 序列化表格

字段概要
字段
修饰符和类型字段说明
protected Log logger
Logger available to subclasses
static String REQUEST_CONTEXT_PAGE_ATTRIBUTE
PageContext attribute for the page-level RequestContext instance.
- 从类继承的字段 javax.servlet.jsp.tagext.TagSupport
  id, pageContext
- 从接口继承的字段 javax.servlet.jsp.tagext.IterationTag
  EVAL_BODY_AGAIN
- 从接口继承的字段 javax.servlet.jsp.tagext.Tag
  EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

构造器概要
构造器
构造器说明
RequestContextAwareTag()

方法概要

所有方法实例方法抽象方法具体方法
修饰符和类型	方法	说明
`void`	`doCatch(Throwable throwable)`
`void`	`doFinally()`
`int`	`doStartTag()`	Create and expose the current RequestContext.
`protected abstract int`	`doStartTagInternal()`	Called by doStartTag to perform the actual work.
`protected RequestContext`	`getRequestContext()`	Return the current RequestContext.

从类继承的方法 javax.servlet.jsp.tagext.TagSupport
doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - REQUEST_CONTEXT_PAGE_ATTRIBUTE
```
public static final String REQUEST_CONTEXT_PAGE_ATTRIBUTE
```
    PageContext attribute for the page-level RequestContext instance.
    另请参阅:
    常量字段值
  - logger
```
protected final Log logger
```
    Logger available to subclasses
- 构造器详细资料
  - RequestContextAwareTag
```
public RequestContextAwareTag()
```
- 方法详细资料
  - doStartTag
```
public final int doStartTag()
                     throws JspException
```
    Create and expose the current RequestContext. Delegates to doStartTagInternal() for actual work.
    指定者:
    doStartTag 在接口中 Tag
    覆盖:
    doStartTag 在类中 TagSupport
    抛出:
    JspException
    另请参阅:
    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.
    返回:
    same as TagSupport.doStartTag
    抛出:
    Exception - any exception, any checked one other than a JspException gets wrapped in a JspException by doStartTag
    另请参阅:
    TagSupport.doStartTag()
  - doCatch
```
public void doCatch(Throwable throwable)
             throws Throwable
```
    指定者:
    doCatch 在接口中 TryCatchFinally
    抛出:
    Throwable
  - doFinally
```
public void doFinally()
```
    指定者:
    doFinally 在接口中 TryCatchFinally

修饰符和类型	字段	说明
`protected Log`	`logger`	Logger available to subclasses
`static String`	`REQUEST_CONTEXT_PAGE_ATTRIBUTE`	`PageContext` attribute for the page-level `RequestContext` instance.

类 RequestContextAwareTag

字段概要

从类继承的字段 javax.servlet.jsp.tagext.TagSupport

从接口继承的字段 javax.servlet.jsp.tagext.IterationTag

从接口继承的字段 javax.servlet.jsp.tagext.Tag

构造器概要

方法概要

从类继承的方法 javax.servlet.jsp.tagext.TagSupport

从类继承的方法 java.lang.Object

字段详细资料

REQUEST_CONTEXT_PAGE_ATTRIBUTE

logger

构造器详细资料

RequestContextAwareTag

方法详细资料

doStartTag

getRequestContext

doStartTagInternal

doCatch

doFinally