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 defaultdecode/valueOf/toStringmethods.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.registerCustomEditorcalls.- 从以下版本开始:
- 06.06.2003
- 作者:
- Juergen Hoeller
- 另请参阅:
Number,NumberFormat,DataBinder.registerCustomEditor(java.lang.Class<?>, java.beans.PropertyEditor)
构造器概要
构造器 构造器 说明 CustomNumberEditor(Class<? extends Number> numberClass, boolean allowEmpty)Create a new CustomNumberEditor instance, using the defaultvalueOfmethods for parsing andtoStringmethods 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
所有方法 实例方法 具体方法 修饰符和类型 方法 说明 StringgetAsText()Format the Number as String, using the specified NumberFormat.voidsetAsText(String text)Parse the Number from the given text, using the specified NumberFormat.voidsetValue(Object value)Coerce a Number value into the required target class, if necessary.
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 defaultvalueOfmethods for parsing andtoStringmethods for rendering.The "allowEmpty" parameter states if an empty String should be allowed for parsing, i.e. get interpreted as
nullvalue. Else, an IllegalArgumentException gets thrown in that case.- 参数:
numberClass- Number subclass to generateallowEmpty- 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, 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
nullvalue. Else, an IllegalArgumentException gets thrown in that case.- 参数:
numberClass- Number subclass to generatenumberFormat- NumberFormat to use for parsing and renderingallowEmpty- 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(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