javax.servlet.jsp.tagext
类 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：

序列化表格

字段摘要

protected BodyContent

bodyContent The current BodyContent for this BodyTag.

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

id, pageContext

从接口 javax.servlet.jsp.tagext.BodyTag 继承的字段

EVAL_BODY_BUFFERED, EVAL_BODY_TAG

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

EVAL_BODY_AGAIN

从接口 javax.servlet.jsp.tagext.Tag 继承的字段

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

构造方法摘要

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.

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

findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口 javax.servlet.jsp.tagext.Tag 继承的方法

getParent, setPageContext, setParent

字段详细信息

bodyContent

protected BodyContent bodyContent

The current BodyContent for this BodyTag.

构造方法详细信息

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.

指定者：

接口 Tag 中的 doStartTag

覆盖：

类 TagSupport 中的 doStartTag

返回：

EVAL_BODY_BUFFERED

抛出：

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.

指定者：

接口 Tag 中的 doEndTag

覆盖：

类 TagSupport 中的 doEndTag

返回：

EVAL_PAGE

抛出：

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.

指定者：

接口 BodyTag 中的 setBodyContent

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.

指定者：

接口 BodyTag 中的 doInitBody

抛出：

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).

指定者：

接口 IterationTag 中的 doAfterBody

覆盖：

类 TagSupport 中的 doAfterBody

返回：

SKIP_BODY

抛出：

JspException - if an error occurred while processing this tag

另请参见：

doInitBody(), IterationTag.doAfterBody()

release

public void release()

Release state.

指定者：

接口 Tag 中的 release

覆盖：

类 TagSupport 中的 release

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.