JsrExpressionParser (Spring Batch 4.1.4.RELEASE API)

java.lang.Object
- org.springframework.batch.core.jsr.configuration.support.JsrExpressionParser

```
public class JsrExpressionParser
extends java.lang.Object
```
Support class for parsing JSR-352 expressions. The JSR-352 expression syntax, for example conditional/elvis statements need to be transformed a bit to be valid SPeL expressions.
从以下版本开始:
3.0
作者:
Chris Schaefer

构造器概要

构造器
构造器	说明
`JsrExpressionParser()`	Creates a new instance of this expression parser without and expression resolver.
`JsrExpressionParser(org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext)`	Creates a new instances of this expression parser with the provided expression resolver and context to evaluate against.

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
`java.lang.String`	`parseExpression(java.lang.String expression)`	Parses the provided expression, applying any transformations needed to evaluate as a SPeL expression.

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
  - JsrExpressionParser
```
public JsrExpressionParser()
```
    Creates a new instance of this expression parser without and expression resolver. Creating an instance via this constructor will still parse expressions but no resolution of operators will occur as its expected the caller will.
  - JsrExpressionParser
```
public JsrExpressionParser(org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver,
                           org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext)
```
    Creates a new instances of this expression parser with the provided expression resolver and context to evaluate against.
    参数:
    beanExpressionResolver - the expression resolver to use when resolving expressions
    beanExpressionContext - the expression context to resolve expressions against
- 方法详细资料
  - parseExpression
```
public java.lang.String parseExpression(java.lang.String expression)
```
    Parses the provided expression, applying any transformations needed to evaluate as a SPeL expression.
    参数:
    expression - the expression to parse and transform
    返回:
    a JSR-352 transformed expression that can be evaluated by a SPeL parser