org.apache.struts2.components
类 Select

java.lang.Object
  org.apache.struts2.components.Component
      org.apache.struts2.components.UIBean
          org.apache.struts2.components.ListUIBean
              org.apache.struts2.components.Select

直接已知子类：

UpDownSelect

public class Select
extends ListUIBean

Render an HTML input tag of type select.

Examples

 

 <s:select label="Pets"
        name="petIds"
        list="petDao.pets"
        listKey="id"
        listValue="name"
        multiple="true"
        size="3"
        required="true"
        value="%{petDao.pets.{id}}"
 />

 <s:select label="Months"
        name="months"
        headerKey="-1" headerValue="Select Month"
        list="#{'01':'Jan', '02':'Feb', [...]}"
        value="selectedMonth"
        required="true"
 />

 // The month id (01, 02, ...) returned by the getSelectedMonth() call
 // against the stack will be auto-selected

 
 

Note: For any of the tags that use lists (select probably being the most ubiquitous), which uses the OGNL list notation (see the "months" example above), it should be noted that the map key created (in the months example, the '01', '02', etc.) is typed. '1' is a char, '01' is a String, "1" is a String. This is important since if the value returned by your "value" attribute is NOT the same type as the key in the "list" attribute, they WILL NOT MATCH, even though their String values may be equivalent. If they don't match, nothing in your list will be auto-selected.

字段摘要

static String

TEMPLATE

从类 org.apache.struts2.components.Component 继承的字段

COMPONENT_STACK

构造方法摘要

Select(com.opensymphony.xwork2.util.ValueStack stack, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

方法摘要

void	evaluateExtraParams()
void	setEmptyOption(String emptyOption)
void	setHeaderKey(String headerKey)
void	setHeaderValue(String headerValue)
void	setMultiple(String multiple)
void	setSize(String size)

从类 org.apache.struts2.components.ListUIBean 继承的方法

contains, setList, setListCssClass, setListCssStyle, setListKey, setListTitle, setListValue, setThrowExceptionOnNullValueAttribute

从类 org.apache.struts2.components.UIBean 继承的方法

addFormParameter, copyParams, end, evaluateParams, getId, getTemplate, getTemplateDir, getTheme, setAccesskey, setCssClass, setCssErrorClass, setCssErrorStyle, setCssStyle, setDefaultTemplateDir, setDefaultUITheme, setDisabled, setDynamicAttributes, setErrorPosition, setId, setJavascriptTooltip, setKey, setLabel, setLabelposition, setLabelSeparator, setName, setOnblur, setOnchange, setOnclick, setOndblclick, setOnfocus, setOnkeydown, setOnkeypress, setOnkeyup, setOnmousedown, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setOnselect, setRequiredLabel, setRequiredPosition, setTabindex, setTemplate, setTemplateDir, setTemplateEngineManager, setTheme, setTitle, setTooltip, setTooltipConfig, setTooltipCssClass, setTooltipDelay, setTooltipIconPath, setUIThemeExpansionToken, setValue

从类 org.apache.struts2.components.Component 继承的方法

addAllParameters, addParameter, altSyntax, getComponentStack, getParameters, getStack, setActionMapper, setThrowExceptionsOnELFailure, setUrlHelper, start, usesBody

从类 java.lang.Object 继承的方法

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

字段详细信息

TEMPLATE

public static final String TEMPLATE

另请参见：

常量字段值

构造方法详细信息

Select

public Select(com.opensymphony.xwork2.util.ValueStack stack,
              javax.servlet.http.HttpServletRequest request,
              javax.servlet.http.HttpServletResponse response)

方法详细信息

evaluateExtraParams

public void evaluateExtraParams()

覆盖：

类 ListUIBean 中的 evaluateExtraParams

setEmptyOption

public void setEmptyOption(String emptyOption)

setHeaderKey

public void setHeaderKey(String headerKey)

setHeaderValue

public void setHeaderValue(String headerValue)

setMultiple

public void setMultiple(String multiple)

setSize

public void setSize(String size)