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

All Implemented Interfaces:
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.
Since:
3.0.1
Author:
Keith Donald, Juergen Hoeller
See Also:
Serialized Form

Field Summary
- Fields inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
  logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE
- Fields inherited from class javax.servlet.jsp.tagext.TagSupport
  id, pageContext
- Fields inherited from interface javax.servlet.jsp.tagext.IterationTag
  EVAL_BODY_AGAIN
- Fields inherited from interface javax.servlet.jsp.tagext.Tag
  EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary
Constructors
Constructor Description
EvalTag()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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.

Methods inherited from class org.springframework.web.servlet.tags.HtmlEscapingAwareTag
htmlEscape, isDefaultHtmlEscape, isHtmlEscape, isResponseEncodedHtmlEscape, setHtmlEscape

Methods inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
doCatch, doFinally, doStartTag, getRequestContext

Methods inherited from class javax.servlet.jsp.tagext.TagSupport
doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EvalTag
```
public EvalTag()
```
- Method Detail
  - 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".
    Throws:
    JspException
  - doStartTagInternal
```
public int doStartTagInternal()
                       throws JspException
```
    Description copied from class: RequestContextAwareTag
    Called by doStartTag to perform the actual work.
    Specified by:
    doStartTagInternal in class RequestContextAwareTag
    Returns:
    same as TagSupport.doStartTag
    Throws:
    JspException
    See Also:
    TagSupport.doStartTag()
  - doEndTag
```
public int doEndTag()
             throws JspException
```
    Specified by:
    doEndTag in interface Tag
    Overrides:
    doEndTag in class TagSupport
    Throws:
    JspException