java.lang.Object
- org.springframework.expression.common.ExpressionUtils

```
public abstract class ExpressionUtils
extends Object
```
Common utility functions that may be used by any Expression Language provider.
从以下版本开始:
3.0
作者:
Andy Clement, Juergen Hoeller

构造器概要
构造器
构造器说明
ExpressionUtils()

方法概要

所有方法静态方法具体方法
修饰符和类型	方法	说明
`static <T> T`	`convertTypedValue(EvaluationContext context, TypedValue typedValue, Class<T> targetType)`	Determines if there is a type converter available in the specified context and attempts to use it to convert the supplied value to the specified type.
`static boolean`	`toBoolean(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a boolean using the supplied type converter.
`static byte`	`toByte(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a byte using the supplied type converter.
`static char`	`toChar(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a char using the supplied type converter.
`static double`	`toDouble(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a double using the supplied type converter.
`static float`	`toFloat(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a float using the supplied type converter.
`static int`	`toInt(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to an int using the supplied type converter.
`static long`	`toLong(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a long using the supplied type converter.
`static short`	`toShort(TypeConverter typeConverter, TypedValue typedValue)`	Attempt to convert a typed value to a short using the supplied type converter.

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
- ExpressionUtils
```
public ExpressionUtils()
```

方法详细资料

convertTypedValue
```
public static <T> T convertTypedValue(EvaluationContext context,
                                      TypedValue typedValue,
                                      Class<T> targetType)
```
Determines if there is a type converter available in the specified context and attempts to use it to convert the supplied value to the specified type. Throws an exception if conversion is not possible.
参数:
context - the evaluation context that may define a type converter
typedValue - the value to convert and a type descriptor describing it
targetType - the type to attempt conversion to
返回:
the converted value
抛出:
EvaluationException - if there is a problem during conversion or conversion of the value to the specified type is not supported

toInt

public static int toInt(TypeConverter typeConverter,
                        TypedValue typedValue)

Attempt to convert a typed value to an int using the supplied type converter.

toBoolean

public static boolean toBoolean(TypeConverter typeConverter,
                                TypedValue typedValue)

Attempt to convert a typed value to a boolean using the supplied type converter.

toDouble

public static double toDouble(TypeConverter typeConverter,
                              TypedValue typedValue)

Attempt to convert a typed value to a double using the supplied type converter.

toLong

public static long toLong(TypeConverter typeConverter,
                          TypedValue typedValue)

Attempt to convert a typed value to a long using the supplied type converter.

toChar

public static char toChar(TypeConverter typeConverter,
                          TypedValue typedValue)

Attempt to convert a typed value to a char using the supplied type converter.

toShort

public static short toShort(TypeConverter typeConverter,
                            TypedValue typedValue)

Attempt to convert a typed value to a short using the supplied type converter.

toFloat

public static float toFloat(TypeConverter typeConverter,
                            TypedValue typedValue)

Attempt to convert a typed value to a float using the supplied type converter.

toByte

public static byte toByte(TypeConverter typeConverter,
                          TypedValue typedValue)

Attempt to convert a typed value to a byte using the supplied type converter.

类 ExpressionUtils

构造器概要