org.springframework.beans.propertyeditors

类 CustomNumberEditor

java.lang.Object

java.beans.PropertyEditorSupport

org.springframework.beans.propertyeditors.CustomNumberEditor

所有已实现的接口:

PropertyEditor

public class CustomNumberEditor
extends PropertyEditorSupport

Property editor for any Number subclass such as Short, Integer, Long, BigInteger, Float, Double, BigDecimal. Can use a given NumberFormat for (locale-specific) parsing and rendering, or alternatively the default decode / valueOf / toString methods.

This is not meant to be used as system PropertyEditor but rather as locale-specific number editor within custom controller code, parsing user-entered number strings into Number properties of beans and rendering them in the UI form.

In web MVC code, this editor will typically be registered with binder.registerCustomEditor calls.

从以下版本开始:

06.06.2003

作者:

Juergen Hoeller

另请参阅:

Number, NumberFormat, org.springframework.validation.DataBinder#registerCustomEditor

构造器概要

构造器

构造器和说明
CustomNumberEditor(Class<? extends Number> numberClass, boolean allowEmpty) Create a new CustomNumberEditor instance, using the default valueOf methods for parsing and toString methods for rendering.
CustomNumberEditor(Class<? extends Number> numberClass, NumberFormat numberFormat, boolean allowEmpty) Create a new CustomNumberEditor instance, using the given NumberFormat for parsing and rendering.

方法概要

限定符和类型	方法和说明
String	getAsText() Format the Number as String, using the specified NumberFormat.
void	setAsText(String text) Parse the Number from the given text, using the specified NumberFormat.
void	setValue(Object value) Coerce a Number value into the required target class, if necessary.

从类继承的方法 java.beans.PropertyEditorSupport

addPropertyChangeListener, firePropertyChange, getCustomEditor, getJavaInitializationString, getSource, getTags, getValue, isPaintable, paintValue, removePropertyChangeListener, setSource, supportsCustomEditor

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

CustomNumberEditor

public CustomNumberEditor(Class<? extends Number> numberClass,
                          boolean allowEmpty)
                   throws IllegalArgumentException

Create a new CustomNumberEditor instance, using the default valueOf methods for parsing and toString methods for rendering.

The "allowEmpty" parameter states if an empty String should be allowed for parsing, i.e. get interpreted as null value. Else, an IllegalArgumentException gets thrown in that case.

参数:

numberClass - Number subclass to generate

allowEmpty - if empty strings should be allowed

抛出:

IllegalArgumentException - if an invalid numberClass has been specified

另请参阅:

NumberUtils.parseNumber(String, Class), Integer.valueOf(java.lang.String, int), Integer.toString(int, int)

CustomNumberEditor

public CustomNumberEditor(Class<? extends Number> numberClass,
                          @Nullable
                          NumberFormat numberFormat,
                          boolean allowEmpty)
                   throws IllegalArgumentException

Create a new CustomNumberEditor instance, using the given NumberFormat for parsing and rendering.

The allowEmpty parameter states if an empty String should be allowed for parsing, i.e. get interpreted as null value. Else, an IllegalArgumentException gets thrown in that case.

参数:

numberClass - Number subclass to generate

numberFormat - NumberFormat to use for parsing and rendering

allowEmpty - if empty strings should be allowed

抛出:

IllegalArgumentException - if an invalid numberClass has been specified

另请参阅:

NumberUtils.parseNumber(String, Class, java.text.NumberFormat), NumberFormat.parse(java.lang.String, java.text.ParsePosition), NumberFormat.format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)

方法详细资料

setAsText

public void setAsText(String text)
               throws IllegalArgumentException

Parse the Number from the given text, using the specified NumberFormat.

指定者:

setAsText 在接口中 PropertyEditor

覆盖:

setAsText 在类中 PropertyEditorSupport

抛出:

IllegalArgumentException

setValue

public void setValue(@Nullable
                     Object value)

Coerce a Number value into the required target class, if necessary.

指定者:

setValue 在接口中 PropertyEditor

覆盖:

setValue 在类中 PropertyEditorSupport

getAsText

public String getAsText()

Format the Number as String, using the specified NumberFormat.

指定者:

getAsText 在接口中 PropertyEditor

覆盖:

getAsText 在类中 PropertyEditorSupport