BodyTagSupport (Java EE 5 SDK)

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Java EE 5 SDK

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摘要: 嵌套 | 字段 | 构造器 | 方法

详细信息: 字段 | 构造器 | 方法

javax.servlet.jsp.tagext Class BodyTagSupport

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      javax.servlet.jsp.tagext.BodyTagSupport

所有已实现的接口:: Serializable, BodyTag, IterationTag, JspTag, Tag

public class BodyTagSupport
extends TagSupport
implements BodyTag

A base class for defining tag handlers implementing BodyTag.

The BodyTagSupport class implements the BodyTag interface and adds additional convenience methods including getter methods for the bodyContent property and methods to get at the previous out JspWriter.

Many tag handlers will extend BodyTagSupport and only redefine a few methods.

另请参见:: Serialized Form

字段摘要
`protected BodyContent`	`bodyContent` The current BodyContent for this BodyTag.

Fields inherited from class javax.servlet.jsp.tagext.TagSupport
`id, pageContext`

Fields inherited from interface javax.servlet.jsp.tagext.BodyTag
`EVAL_BODY_BUFFERED, EVAL_BODY_TAG`

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`

构造器摘要
`BodyTagSupport()` Default constructor, all subclasses are required to only define a public constructor with the same signature, and to call the superclass constructor.

方法摘要
`int`	`doAfterBody()` After the body evaluation: do not reevaluate and continue with the page.
`int`	`doEndTag()` Default processing of the end tag returning EVAL_PAGE.
`void`	`doInitBody()` Prepare for evaluation of the body just before the first body evaluation: no action.
`int`	`doStartTag()` Default processing of the start tag returning EVAL_BODY_BUFFERED.
`BodyContent`	`getBodyContent()` Get current bodyContent.
`JspWriter`	`getPreviousOut()` Get surrounding out JspWriter.
`void`	`release()` Release state.
`void`	`setBodyContent(BodyContent b)` Prepare for evaluation of the body: stash the bodyContent away.

类方法继承 javax.servlet.jsp.tagext.TagSupport
`findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue`

类方法继承 java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.servlet.jsp.tagext.Tag
`getParent, setPageContext, setParent`

字段详细信息

bodyContent

protected BodyContent bodyContent

The current BodyContent for this BodyTag.

构造器详细信息

BodyTagSupport

public BodyTagSupport()

Default constructor, all subclasses are required to only define a public constructor with the same signature, and to call the superclass constructor. This constructor is called by the code generated by the JSP translator.

方法详细信息

doStartTag

public int doStartTag()
               throws JspException

Default processing of the start tag returning EVAL_BODY_BUFFERED.

规范说明:: doStartTag in interface Tag
重写:: doStartTag in class TagSupport

返回:: EVAL_BODY_BUFFERED
抛出异常:: JspException - if an error occurred while processing this tag
另请参见:: Tag.doStartTag()

doEndTag

public int doEndTag()
             throws JspException

Default processing of the end tag returning EVAL_PAGE.

规范说明:: doEndTag in interface Tag
重写:: doEndTag in class TagSupport

返回:: EVAL_PAGE
抛出异常:: JspException - if an error occurred while processing this tag
另请参见:: Tag.doEndTag()

setBodyContent

public void setBodyContent(BodyContent b)

Prepare for evaluation of the body: stash the bodyContent away.

规范说明:: setBodyContent in interface BodyTag

参数:: b - the BodyContent
另请参见:: doAfterBody(), doInitBody(), BodyTag.setBodyContent(javax.servlet.jsp.tagext.BodyContent)

doInitBody

public void doInitBody()
                throws JspException

Prepare for evaluation of the body just before the first body evaluation: no action.

规范说明:: doInitBody in interface BodyTag

抛出异常:: JspException - if an error occurred while processing this tag
另请参见:: setBodyContent(javax.servlet.jsp.tagext.BodyContent), doAfterBody(), BodyTag.doInitBody()

doAfterBody

public int doAfterBody()
                throws JspException

After the body evaluation: do not reevaluate and continue with the page. By default nothing is done with the bodyContent data (if any).

规范说明:: doAfterBody in interface IterationTag
重写:: doAfterBody in class TagSupport

返回:: SKIP_BODY
抛出异常:: JspException - if an error occurred while processing this tag
另请参见:: doInitBody(), IterationTag.doAfterBody()

release

public void release()

Release state.

规范说明:: release in interface Tag
重写:: release in class TagSupport

另请参见:: Tag.release()

getBodyContent

public BodyContent getBodyContent()

Get current bodyContent.

返回:: the body content.

getPreviousOut

public JspWriter getPreviousOut()

Get surrounding out JspWriter.

返回:: the enclosing JspWriter, from the bodyContent.

概述