StandardBeanExpressionResolver (Spring Framework 4.3.30.RELEASE API)

java.lang.Object
- org.springframework.context.expression.StandardBeanExpressionResolver

所有已实现的接口:
BeanExpressionResolver
```
public class StandardBeanExpressionResolver
extends Object
implements BeanExpressionResolver
```
Standard implementation of the BeanExpressionResolver interface, parsing and evaluating Spring EL using Spring's expression module.
从以下版本开始:
3.0
作者:
Juergen Hoeller
另请参阅:
ExpressionParser, SpelExpressionParser, StandardEvaluationContext

字段概要
字段
修饰符和类型字段说明
static String DEFAULT_EXPRESSION_PREFIX
Default expression prefix: "#{"
static String DEFAULT_EXPRESSION_SUFFIX
Default expression suffix: "}"

构造器概要

构造器
构造器	说明
`StandardBeanExpressionResolver()`	Create a new `StandardBeanExpressionResolver` with default settings.
`StandardBeanExpressionResolver(ClassLoader beanClassLoader)`	Create a new `StandardBeanExpressionResolver` with the given bean class loader, using it as the basis for expression compilation.

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 void`	`customizeEvaluationContext(StandardEvaluationContext evalContext)`	Template method for customizing the expression evaluation context.
`Object`	`evaluate(String value, BeanExpressionContext evalContext)`	Evaluate the given value as an expression, if applicable; return the value as-is otherwise.
`void`	`setExpressionParser(ExpressionParser expressionParser)`	Specify the EL parser to use for expression parsing.
`void`	`setExpressionPrefix(String expressionPrefix)`	Set the prefix that an expression string starts with.
`void`	`setExpressionSuffix(String expressionSuffix)`	Set the suffix that an expression string ends with.

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

- 字段详细资料
  另请参阅:
  常量字段值
- DEFAULT_EXPRESSION_SUFFIX
```
public static final String DEFAULT_EXPRESSION_SUFFIX
```
  Default expression suffix: "}"
  另请参阅:
  常量字段值

构造器详细资料
- StandardBeanExpressionResolver
```
public StandardBeanExpressionResolver()
```
  Create a new StandardBeanExpressionResolver with default settings.
- StandardBeanExpressionResolver
```
public StandardBeanExpressionResolver(ClassLoader beanClassLoader)
```
  Create a new StandardBeanExpressionResolver with the given bean class loader, using it as the basis for expression compilation.
  参数:
  beanClassLoader - the factory's bean class loader

方法详细资料
- setExpressionPrefix
```
public void setExpressionPrefix(String expressionPrefix)
```
  Set the prefix that an expression string starts with. The default is "#{".
  另请参阅:
  DEFAULT_EXPRESSION_PREFIX
- setExpressionSuffix
```
public void setExpressionSuffix(String expressionSuffix)
```
  Set the suffix that an expression string ends with. The default is "}".
  另请参阅:
  DEFAULT_EXPRESSION_SUFFIX
- setExpressionParser
```
public void setExpressionParser(ExpressionParser expressionParser)
```
  Specify the EL parser to use for expression parsing.
  Default is a SpelExpressionParser, compatible with standard Unified EL style expression syntax.
- evaluate
```
public Object evaluate(String value,
                       BeanExpressionContext evalContext)
                throws BeansException
```
  从接口复制的说明: BeanExpressionResolver
  Evaluate the given value as an expression, if applicable; return the value as-is otherwise.
  指定者:
  evaluate 在接口中 BeanExpressionResolver
  参数:
  value - the value to check
  evalContext - the evaluation context
  返回:
  the resolved value (potentially the given value as-is)
  抛出:
  BeansException - if evaluation failed
- customizeEvaluationContext
```
protected void customizeEvaluationContext(StandardEvaluationContext evalContext)
```
  Template method for customizing the expression evaluation context.
  The default implementation is empty.