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.
Constructor and Description |
---|
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.
|
Modifier and Type | Method and Description |
---|---|
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. |
convert, convertArray, convertToString, getDefault, handleError, handleMissing, isUseDefault, setDefaultValue, toString
public StringConverter()
ConversionException
if an error occurs.public StringConverter(Object defaultValue)
defaultValue
- The default value to be returned
if the value to be converted is missing or an error
occurs converting the value.protected Class getDefaultType()
Converter
handles.getDefaultType
in class AbstractConverter
Converter
handles.protected Object convertToType(Class type, Object value) throws Throwable
convertToType
in class AbstractConverter
type
- Data type to which this value should be converted.value
- The input value to be converted.Throwable
- if an error occurs converting to the specified typeCopyright © 2000-2014 The Apache Software Foundation. All Rights Reserved.