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SimpleTypeConverter (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.beans
Class SimpleTypeConverter

java.lang.Object
  org.springframework.beans.PropertyEditorRegistrySupport
      org.springframework.beans.SimpleTypeConverter

All Implemented Interfaces:

PropertyEditorRegistry, TypeConverter

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public class SimpleTypeConverter
extends PropertyEditorRegistrySupport
implements TypeConverter

Simple implementation of the TypeConverter interface that does not operate on any specific target object. This is an alternative to using a full-blown BeanWrapperImpl instance for arbitrary type conversion needs.

Since:

2.0

Author:

Juergen Hoeller

See Also:

BeanWrapperImpl

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Constructor Summary
SimpleTypeConverter()

 

Method Summary
Object	convertIfNecessary(Object value, Class requiredType)           Convert the value to the required type (if necessary from a String).
Object	convertIfNecessary(Object value, Class requiredType, MethodParameter methodParam)           Convert the value to the required type (if necessary from a String).

 

Methods inherited from class org.springframework.beans.PropertyEditorRegistrySupport
copyCustomEditorsTo, copyDefaultEditorsTo, findCustomEditor, getDefaultEditor, getPropertyType, guessPropertyTypeFromEditors, hasCustomEditorForElement, isSharedEditor, registerCustomEditor, registerCustomEditor, registerDefaultEditors, registerSharedEditor, useConfigValueEditors

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

SimpleTypeConverter

public SimpleTypeConverter()

Method Detail

convertIfNecessary

public Object convertIfNecessary(Object value,
                                 Class requiredType)
                          throws TypeMismatchException

Description copied from interface: TypeConverter

Convert the value to the required type (if necessary from a String).

Conversions from String to any type will typically use the setAsText method of the PropertyEditor class. Note that a PropertyEditor must be registered for the given class for this to work; this is a standard JavaBeans API. A number of PropertyEditors are automatically registered.

Specified by:

convertIfNecessary in interface TypeConverter

Parameters:

value - the value to convert

requiredType - the type we must convert to (or null if not known, for example in case of a collection element)

Returns:

the new value, possibly the result of type conversion

Throws:

TypeMismatchException - if type conversion failed

See Also:

PropertyEditor.setAsText(String), PropertyEditor.getValue()

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convertIfNecessary

public Object convertIfNecessary(Object value,
                                 Class requiredType,
                                 MethodParameter methodParam)
                          throws TypeMismatchException

Description copied from interface: TypeConverter

Convert the value to the required type (if necessary from a String).

Conversions from String to any type will typically use the setAsText method of the PropertyEditor class. Note that a PropertyEditor must be registered for the given class for this to work; this is a standard JavaBeans API. A number of PropertyEditors are automatically registered.

Specified by:

convertIfNecessary in interface TypeConverter

Parameters:

value - the value to convert

requiredType - the type we must convert to (or null if not known, for example in case of a collection element)

methodParam - the method parameter that is the target of the conversion (for analysis of generic types; may be null)

Returns:

the new value, possibly the result of type conversion

Throws:

TypeMismatchException - if type conversion failed

See Also:

PropertyEditor.setAsText(String), PropertyEditor.getValue()

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