org.springframework.context.expression

类 StandardBeanExpressionResolver

java.lang.Object

org.springframework.context.expression.StandardBeanExpressionResolver

所有已实现的接口:

org.springframework.beans.factory.config.BeanExpressionResolver

public class StandardBeanExpressionResolver
extends Object
implements org.springframework.beans.factory.config.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

限定符和类型	字段和说明
static String	DEFAULT_EXPRESSION_PREFIX Default expression prefix: "#{"
static String	DEFAULT_EXPRESSION_SUFFIX Default expression suffix: "}"

构造器概要

构造器

构造器和说明
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

限定符和类型	方法和说明
protected void	customizeEvaluationContext(org.springframework.expression.spel.support.StandardEvaluationContext evalContext) Template method for customizing the expression evaluation context.
Object	evaluate(String value, org.springframework.beans.factory.config.BeanExpressionContext evalContext)
void	setExpressionParser(org.springframework.expression.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

DEFAULT_EXPRESSION_PREFIX

public static final String DEFAULT_EXPRESSION_PREFIX

Default expression prefix: "#{"

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(@Nullable
                                      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(org.springframework.expression.ExpressionParser expressionParser)

Specify the EL parser to use for expression parsing.

Default is a SpelExpressionParser, compatible with standard Unified EL style expression syntax.

evaluate

@Nullable
public Object evaluate(@Nullable
                                  String value,
                                  org.springframework.beans.factory.config.BeanExpressionContext evalContext)
                           throws org.springframework.beans.BeansException

指定者:

evaluate 在接口中 org.springframework.beans.factory.config.BeanExpressionResolver

抛出:

org.springframework.beans.BeansException

customizeEvaluationContext

protected void customizeEvaluationContext(org.springframework.expression.spel.support.StandardEvaluationContext evalContext)

Template method for customizing the expression evaluation context.

The default implementation is empty.