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.ErrorsTag

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

public class ErrorsTag
extends AbstractHtmlElementBodyTag
implements BodyTag

The <errors> tag renders field errors in an HTML 'span' tag. Displays errors for either an object or a particular field.

This tag supports three main usage patterns:

Field only - set 'path' to the field name (or path)
Object errors only - omit 'path'
All errors - set 'path' to '*'

Attribute Summary
Attribute	Required?	Runtime Expression?	Description
cssClass	false	true	HTML Optional Attribute
cssStyle	false	true	HTML Optional Attribute
delimiter	false	true	Delimiter for displaying multiple error messages. Defaults to the br tag.
dir	false	true	HTML Standard Attribute
element	false	true	Specifies the HTML element that is used to render the enclosing errors.
htmlEscape	false	true	Enable/disable HTML escaping of rendered values.
id	false	true	HTML Standard Attribute
lang	false	true	HTML Standard Attribute
onclick	false	true	HTML Event Attribute
ondblclick	false	true	HTML Event Attribute
onkeydown	false	true	HTML Event Attribute
onkeypress	false	true	HTML Event Attribute
onkeyup	false	true	HTML Event Attribute
onmousedown	false	true	HTML Event Attribute
onmousemove	false	true	HTML Event Attribute
onmouseout	false	true	HTML Event Attribute
onmouseover	false	true	HTML Event Attribute
onmouseup	false	true	HTML Event Attribute
path	false	true	Path to errors object for data binding
tabindex	false	true	HTML Standard Attribute
title	false	true	HTML Standard Attribute

从以下版本开始:: 2.0
作者:: Rob Harrop, Juergen Hoeller, Rick Evans
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 MESSAGES_ATTRIBUTE
The key under which this tag exposes error messages in the page context scope.
static String SPAN_TAG
The HTML 'span' 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
ErrorsTag()

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()`	Get the value for the HTML '`id`' attribute.
`protected void`	`exposeAttributes()`	Exposes any bind status error messages under `this key` in the `PageContext.PAGE_SCOPE`.
`String`	`getDelimiter()`	Return the delimiter to be used between error messages.
`String`	`getElement()`	Get the HTML element must be used to render the error messages.
`protected String`	`getName()`	Get the value for the HTML '`name`' attribute.
`protected void`	`removeAttributes()`	Removes any bind status error messages that were previously stored under `this key` in the `PageContext.PAGE_SCOPE`.
`protected void`	`renderDefaultContent(TagWriter tagWriter)`
`void`	`setDelimiter(String delimiter)`	Set the delimiter to be used between error messages.
`void`	`setElement(String element)`	Set the HTML element must be used to render the error messages.
`protected boolean`	`shouldRender()`	Should rendering of this tag proceed at all?

从类继承的方法 org.springframework.web.servlet.tags.form.AbstractHtmlElementBodyTag
doEndTag, doFinally, doInitBody, flushBufferedBodyContent, onWriteTagContent, renderFromBodyContent, setBodyContent, 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, getBindStatus, getBoundValue, getEditor, getId, 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
  - MESSAGES_ATTRIBUTE
```
public static final String MESSAGES_ATTRIBUTE
```
    The key under which this tag exposes error messages in the page context scope.
    另请参阅:
    常量字段值
  - SPAN_TAG
```
public static final String SPAN_TAG
```
    The HTML 'span' tag.
    另请参阅:
    常量字段值
- 构造器详细资料
  - ErrorsTag
```
public ErrorsTag()
```
- 方法详细资料
  - setElement
```
public void setElement(String element)
```
    Set the HTML element must be used to render the error messages.
    Defaults to an HTML '<span/>' tag.
  - getElement
```
public String getElement()
```
    Get the HTML element must be used to render the error messages.
  - setDelimiter
```
public void setDelimiter(String delimiter)
```
    Set the delimiter to be used between error messages.
    Defaults to an HTML '<br/>' tag.
  - getDelimiter
```
public String getDelimiter()
```
    Return the delimiter to be used between error messages.
  - autogenerateId
```
protected String autogenerateId()
                         throws JspException
```
    Get the value for the HTML 'id' attribute.
    Appends '.errors' to the value returned by AbstractDataBoundFormElementTag.getPropertyPath() or to the model attribute name if the <form:errors/> tag's 'path' attribute has been omitted.
    覆盖:
    autogenerateId 在类中 AbstractDataBoundFormElementTag
    返回:
    the value for the HTML 'id' attribute
    抛出:
    JspException
    另请参阅:
    AbstractDataBoundFormElementTag.getPropertyPath()
  - getName
```
@Nullable
protected String getName()
                  throws JspException
```
    Get the value for the HTML 'name' attribute.
    Simply returns null because the 'name' attribute is not a validate attribute for the 'span' element.
    覆盖:
    getName 在类中 AbstractDataBoundFormElementTag
    返回:
    the value for the HTML 'name' attribute
    抛出:
    JspException
  - shouldRender
```
protected boolean shouldRender()
                        throws JspException
```
    Should rendering of this tag proceed at all?
    Only renders output when there are errors for the configured path.
    覆盖:
    shouldRender 在类中 AbstractHtmlElementBodyTag
    返回:
    true only when there are errors for the configured path
    抛出:
    JspException
  - renderDefaultContent
```
protected void renderDefaultContent(TagWriter tagWriter)
                             throws JspException
```
    指定者:
    renderDefaultContent 在类中 AbstractHtmlElementBodyTag
    抛出:
    JspException
  - exposeAttributes
```
protected void exposeAttributes()
                         throws JspException
```
    Exposes any bind status error messages under this key in the PageContext.PAGE_SCOPE.
    Only called if shouldRender() returns true.
    覆盖:
    exposeAttributes 在类中 AbstractHtmlElementBodyTag
    抛出:
    JspException
    另请参阅:
    removeAttributes()
  - removeAttributes
```
protected void removeAttributes()
```
    Removes any bind status error messages that were previously stored under this key in the PageContext.PAGE_SCOPE.
    覆盖:
    removeAttributes 在类中 AbstractHtmlElementBodyTag
    另请参阅:
    exposeAttributes()

修饰符和类型	字段	说明
`static String`	`MESSAGES_ATTRIBUTE`	The key under which this tag exposes error messages in the `page context scope`.
`static String`	`SPAN_TAG`	The HTML '`span`' tag.

类 ErrorsTag

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

MESSAGES_ATTRIBUTE

SPAN_TAG

构造器详细资料

ErrorsTag

方法详细资料

setElement

getElement

setDelimiter

getDelimiter

autogenerateId

getName

shouldRender

renderDefaultContent

exposeAttributes

removeAttributes