net.hasor.cobble.convert.convert

类 StringConverter

java.lang.Object

net.hasor.cobble.convert.convert.AbstractConverter

net.hasor.cobble.convert.convert.StringConverter

所有已实现的接口:

Converter

public final class StringConverter
extends AbstractConverter

Converter implementation that converts an incoming object into a java.lang.String object.

Note that ConvertUtils really is designed to do string->object conversions, and offers very little support for object->string conversions. The ConvertUtils/ConvertUtilsBean methods only select a converter to apply based upon the target type being converted to, and generally assume that the input is a string (by calling its toString method if needed).

This class is therefore just a dummy converter that converts its input into a string by calling the input object's toString method and returning that value.

It is possible to replace this converter with something that has a big if/else statement that selects behaviour based on the real type of the object being converted (or possibly has a map of converters, and looks them up based on the class of the input object). However this is not part of the existing ConvertUtils framework.

从以下版本开始:

1.3

版本:

$Revision: 690380 $ $Date: 2008-08-29 21:04:38 +0100 (Fri, 29 Aug 2008) $

作者:

Craig R. McClanahan

构造器概要

构造器

构造器和说明
StringConverter() Construct a java.lang.String Converter that throws a ConversionException if an error occurs.
StringConverter(Object defaultValue) Construct a java.lang.String Converter that returns a default value if an error occurs.

方法概要

限定符和类型	方法和说明
protected Object	convertToType(Class<?> type, Object value) Convert the specified input object into an output object of the specified type.
protected Class<?>	getDefaultType() Return the default type this Converter handles.

从类继承的方法 net.hasor.cobble.convert.convert.AbstractConverter

convert, convertArray, convertToString, getDefault, handleError, handleMissing, isUseDefault, setDefaultValue, toString, toString

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

StringConverter

public StringConverter()

Construct a java.lang.String Converter that throws a ConversionException if an error occurs.

StringConverter

public StringConverter(Object defaultValue)

Construct a java.lang.String Converter that returns a default value if an error occurs.

参数:

defaultValue - The default value to be returned if the value to be converted is missing or an error occurs converting the value.

方法详细资料

getDefaultType

protected Class<?> getDefaultType()

Return the default type this Converter handles.

指定者:

getDefaultType 在类中 AbstractConverter

返回:

The default type this Converter handles.

从以下版本开始:

1.8.0

convertToType

protected Object convertToType(Class<?> type,
                               Object value)
                        throws Throwable

Convert the specified input object into an output object of the specified type.

指定者:

convertToType 在类中 AbstractConverter

参数:

type - Data type to which this value should be converted.

value - The input value to be converted.

返回:

The converted value.

抛出:

Throwable - if an error occurs converting to the specified type

从以下版本开始:

1.8.0