java.lang.Object
- javax.servlet.jsp.tagext.TagSupport
- - org.springframework.web.servlet.tags.RequestContextAwareTag
  - - org.springframework.web.servlet.tags.HtmlEscapingAwareTag
    - - org.springframework.web.servlet.tags.form.AbstractFormTag
      - org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag
        org.springframework.web.servlet.tags.form.AbstractHtmlElementTag
        org.springframework.web.servlet.tags.form.AbstractHtmlElementBodyTag
        org.springframework.web.servlet.tags.form.OptionTag

所有已实现的接口:
Serializable, BodyTag, DynamicAttributes, IterationTag, JspTag, Tag, TryCatchFinally, EditorAwareTag
```
public class OptionTag
extends AbstractHtmlElementBodyTag
implements BodyTag
```
JSP tag for rendering an HTML 'option' tag.
Must be used nested inside a SelectTag.
Provides full support for databinding by marking an 'option' as 'selected' if the value matches the value bound to the out SelectTag.
The value property is required and corresponds to the 'value' attribute of the rendered 'option'.
An optional label property can be specified, the value of which corresponds to inner text of the rendered 'option' tag. If no label is specified then the value property will be used when rendering the inner text.
从以下版本开始:
2.0
作者:
Rob Harrop, Juergen Hoeller
另请参阅:
序列化表格

字段概要

字段
修饰符和类型	字段	说明
`static String`	`DISPLAY_VALUE_VARIABLE_NAME`	The name of the JSP variable used to expose the display value for this tag.
`static String`	`VALUE_VARIABLE_NAME`	The name of the JSP variable used to expose the value for this tag.

从类继承的字段 org.springframework.web.servlet.tags.form.AbstractHtmlElementTag
CLASS_ATTRIBUTE, DIR_ATTRIBUTE, LANG_ATTRIBUTE, ONCLICK_ATTRIBUTE, ONDBLCLICK_ATTRIBUTE, ONKEYDOWN_ATTRIBUTE, ONKEYPRESS_ATTRIBUTE, ONKEYUP_ATTRIBUTE, ONMOUSEDOWN_ATTRIBUTE, ONMOUSEMOVE_ATTRIBUTE, ONMOUSEOUT_ATTRIBUTE, ONMOUSEOVER_ATTRIBUTE, ONMOUSEUP_ATTRIBUTE, STYLE_ATTRIBUTE, TABINDEX_ATTRIBUTE, TITLE_ATTRIBUTE

从类继承的字段 org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag
NESTED_PATH_VARIABLE_NAME

从类继承的字段 org.springframework.web.servlet.tags.RequestContextAwareTag
logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE

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

从接口继承的字段 javax.servlet.jsp.tagext.BodyTag
EVAL_BODY_BUFFERED, EVAL_BODY_TAG

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
OptionTag()

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`protected String`	`autogenerateId()`	Autogenerate the '`id`' attribute value for this tag.
`protected void`	`exposeAttributes()`	Called during `AbstractHtmlElementBodyTag.writeTagContent(org.springframework.web.servlet.tags.form.TagWriter)` allowing subclasses to add any attributes to the `PageContext` as needed.
`protected BindStatus`	`getBindStatus()`	Get the `BindStatus` for this tag.
`protected String`	`getLabel()`	Get the text body of the rendered HTML `<option>` tag.
`protected Object`	`getValue()`	Get the 'value' attribute of the rendered HTML `<option>` tag.
`protected boolean`	`isDisabled()`	Get the value of the '`disabled`' attribute.
`protected void`	`onWriteTagContent()`	Make sure we are under a '`select`' tag before proceeding.
`protected void`	`removeAttributes()`	Called by `AbstractHtmlElementBodyTag.doFinally()` allowing subclasses to remove any attributes from the `PageContext` as needed.
`protected void`	`renderDefaultContent(TagWriter tagWriter)`
`protected void`	`renderFromBodyContent(BodyContent bodyContent, TagWriter tagWriter)`	Render the tag contents based on the supplied `BodyContent`.
`void`	`setDisabled(boolean disabled)`	Set the value of the '`disabled`' attribute.
`void`	`setLabel(String label)`	Set the text body of the rendered HTML `<option>` tag.
`void`	`setValue(Object value)`	Set the 'value' attribute of the rendered HTML `<option>` tag.

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractHtmlElementBodyTag
doEndTag, doFinally, doInitBody, flushBufferedBodyContent, setBodyContent, shouldRender, writeTagContent

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractHtmlElementTag
getCssClass, getCssErrorClass, getCssStyle, getDir, getDynamicAttributes, getLang, getOnclick, getOndblclick, getOnkeydown, getOnkeypress, getOnkeyup, getOnmousedown, getOnmousemove, getOnmouseout, getOnmouseover, getOnmouseup, getTabindex, getTitle, isValidDynamicAttribute, resolveCssClass, setCssClass, setCssErrorClass, setCssStyle, setDir, setDynamicAttribute, setLang, setOnclick, setOndblclick, setOnkeydown, setOnkeypress, setOnkeyup, setOnmousedown, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setTabindex, setTitle, writeDefaultAttributes, writeOptionalAttributes

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag
convertToDisplayString, getBoundValue, getEditor, getId, getName, getNestedPath, getPath, getPropertyEditor, getPropertyPath, processFieldValue, resolveId, setId, setPath

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractFormTag
createTagWriter, doStartTagInternal, evaluate, getDisplayString, getDisplayString, isDefaultHtmlEscape, writeOptionalAttribute

从类继承的方法 org.springframework.web.servlet.tags.HtmlEscapingAwareTag
htmlEscape, isHtmlEscape, isResponseEncodedHtmlEscape, setHtmlEscape

从类继承的方法 org.springframework.web.servlet.tags.RequestContextAwareTag
doCatch, doStartTag, getRequestContext

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

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

从接口继承的方法 javax.servlet.jsp.tagext.BodyTag
doInitBody, setBodyContent

从接口继承的方法 javax.servlet.jsp.tagext.IterationTag
doAfterBody

从接口继承的方法 javax.servlet.jsp.tagext.Tag
doEndTag, doStartTag, getParent, release, setPageContext, setParent

- 字段详细资料
  - VALUE_VARIABLE_NAME
```
public static final String VALUE_VARIABLE_NAME
```
    The name of the JSP variable used to expose the value for this tag.
    另请参阅:
    常量字段值
  - DISPLAY_VALUE_VARIABLE_NAME
```
public static final String DISPLAY_VALUE_VARIABLE_NAME
```
    The name of the JSP variable used to expose the display value for this tag.
    另请参阅:
    常量字段值
- 构造器详细资料
  - OptionTag
```
public OptionTag()
```
- 方法详细资料
  - setValue
```
public void setValue(Object value)
```
    Set the 'value' attribute of the rendered HTML <option> tag.
  - getValue
```
protected Object getValue()
```
    Get the 'value' attribute of the rendered HTML <option> tag.
  - setDisabled
```
public void setDisabled(boolean disabled)
```
    Set the value of the 'disabled' attribute.
  - isDisabled
```
protected boolean isDisabled()
```
    Get the value of the 'disabled' attribute.
  - setLabel
```
public void setLabel(String label)
```
    Set the text body of the rendered HTML <option> tag.
    May be a runtime expression.
  - getLabel
```
protected String getLabel()
```
    Get the text body of the rendered HTML <option> tag.
  - renderDefaultContent
```
protected void renderDefaultContent(TagWriter tagWriter)
                             throws JspException
```
    指定者:
    renderDefaultContent 在类中 AbstractHtmlElementBodyTag
    抛出:
    JspException
  - renderFromBodyContent
```
protected void renderFromBodyContent(BodyContent bodyContent,
                                     TagWriter tagWriter)
                              throws JspException
```
    从类复制的说明: AbstractHtmlElementBodyTag
    Render the tag contents based on the supplied BodyContent.
    The default implementation simply flushes the BodyContent directly to the output. Subclasses may choose to override this to add additional content to the output.
    覆盖:
    renderFromBodyContent 在类中 AbstractHtmlElementBodyTag
    抛出:
    JspException
  - onWriteTagContent
```
protected void onWriteTagContent()
```
    Make sure we are under a 'select' tag before proceeding.
    覆盖:
    onWriteTagContent 在类中 AbstractHtmlElementBodyTag
  - exposeAttributes
```
protected void exposeAttributes()
                         throws JspException
```
    从类复制的说明: AbstractHtmlElementBodyTag
    Called during AbstractHtmlElementBodyTag.writeTagContent(org.springframework.web.servlet.tags.form.TagWriter) allowing subclasses to add any attributes to the PageContext as needed.
    覆盖:
    exposeAttributes 在类中 AbstractHtmlElementBodyTag
    抛出:
    JspException
  - getBindStatus
```
protected BindStatus getBindStatus()
```
    从类复制的说明: AbstractDataBoundFormElementTag
    Get the BindStatus for this tag.
    覆盖:
    getBindStatus 在类中 AbstractDataBoundFormElementTag
  - removeAttributes
```
protected void removeAttributes()
```
    从类复制的说明: AbstractHtmlElementBodyTag
    Called by AbstractHtmlElementBodyTag.doFinally() allowing subclasses to remove any attributes from the PageContext as needed.
    覆盖:
    removeAttributes 在类中 AbstractHtmlElementBodyTag
  - autogenerateId
```
protected String autogenerateId()
                         throws JspException
```
    从类复制的说明: AbstractDataBoundFormElementTag
    Autogenerate the 'id' attribute value for this tag.
    The default implementation simply delegates to AbstractDataBoundFormElementTag.getName(), deleting invalid characters (such as "[" or "]").
    覆盖:
    autogenerateId 在类中 AbstractDataBoundFormElementTag
    抛出:
    JspException

类 OptionTag

字段概要

从类继承的字段 org.springframework.web.servlet.tags.form.AbstractHtmlElementTag

从类继承的字段 org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag

从类继承的字段 org.springframework.web.servlet.tags.RequestContextAwareTag

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

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

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 org.springframework.web.servlet.tags.form.AbstractHtmlElementBodyTag

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractHtmlElementTag

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractFormTag

从类继承的方法 org.springframework.web.servlet.tags.HtmlEscapingAwareTag

从类继承的方法 org.springframework.web.servlet.tags.RequestContextAwareTag

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

从类继承的方法 java.lang.Object

从接口继承的方法 javax.servlet.jsp.tagext.BodyTag

从接口继承的方法 javax.servlet.jsp.tagext.IterationTag

从接口继承的方法 javax.servlet.jsp.tagext.Tag

字段详细资料

VALUE_VARIABLE_NAME

DISPLAY_VALUE_VARIABLE_NAME

构造器详细资料

OptionTag

方法详细资料

setValue

getValue

setDisabled

isDisabled

setLabel

getLabel

renderDefaultContent

renderFromBodyContent

onWriteTagContent

exposeAttributes

getBindStatus

removeAttributes

autogenerateId