EvalTag (Spring Framework 4.3.30.RELEASE API)

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.EvalTag

所有已实现的接口:
Serializable, IterationTag, JspTag, Tag, TryCatchFinally
```
public class EvalTag
extends HtmlEscapingAwareTag
```
JSP tag for evaluating expressions with the Spring Expression Language (SpEL). Supports the standard JSP evaluation context consisting of implicit variables and scoped attributes.
从以下版本开始:
3.0.1
作者:
Keith Donald, Juergen Hoeller
另请参阅:
序列化表格

字段概要
- 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
  id, pageContext
- 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
EvalTag()

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
`int`	`doEndTag()`
`int`	`doStartTagInternal()`	Called by doStartTag to perform the actual work.
`void`	`setExpression(String expression)`	Set the expression to evaluate.
`void`	`setJavaScriptEscape(boolean javaScriptEscape)`	Set JavaScript escaping for this tag, as boolean value.
`void`	`setScope(String scope)`	Set the scope to export the evaluation result to.
`void`	`setVar(String var)`	Set the variable name to expose the evaluation result under.

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

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

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

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

- 构造器详细资料
  - EvalTag
```
public EvalTag()
```
- 方法详细资料
  - setExpression
```
public void setExpression(String expression)
```
    Set the expression to evaluate.
  - setVar
```
public void setVar(String var)
```
    Set the variable name to expose the evaluation result under. Defaults to rendering the result to the current JspWriter.
  - setScope
```
public void setScope(String scope)
```
    Set the scope to export the evaluation result to. This attribute has no meaning unless var is also defined.
  - setJavaScriptEscape
```
public void setJavaScriptEscape(boolean javaScriptEscape)
                         throws JspException
```
    Set JavaScript escaping for this tag, as boolean value. Default is "false".
    抛出:
    JspException
  - doStartTagInternal
```
public int doStartTagInternal()
                       throws JspException
```
    从类复制的说明: RequestContextAwareTag
    Called by doStartTag to perform the actual work.
    指定者:
    doStartTagInternal 在类中 RequestContextAwareTag
    返回:
    same as TagSupport.doStartTag
    抛出:
    JspException
    另请参阅:
    TagSupport.doStartTag()
  - doEndTag
```
public int doEndTag()
             throws JspException
```
    指定者:
    doEndTag 在接口中 Tag
    覆盖:
    doEndTag 在类中 TagSupport
    抛出:
    JspException