conversion-service

Spring-mvc.xsd关于mvc:annotation-driven的conversion-service定义

The bean name of the ConversionService that is to be used for type conversion during field binding. This attribute is not required, and only needs to be specified if custom converters need to be configured. If not specified, a default FormattingConversionService is registered with converters to/from common value types. 

org.springframework.format.support.FormattingConversionService

org.springframework.format.support.DefaultFormattingConversionService

public DefaultFormattingConversionService(StringValueResolver embeddedValueResolver, boolean registerDefaultFormatters) {
setEmbeddedValueResolver(embeddedValueResolver);
DefaultConversionService.addDefaultConverters(this);
if (registerDefaultFormatters) {
addDefaultFormatters(this);
}
}

org.springframework.core.convert.support.DefaultConversionService

public static void addDefaultConverters(ConverterRegistry converterRegistry) {
addScalarConverters(converterRegistry);
addCollectionConverters(converterRegistry);


converterRegistry.addConverter(new ByteBufferConverter((ConversionService) converterRegistry));
if (jsr310Available) {
Jsr310ConverterRegistrar.registerJsr310Converters(converterRegistry);
}


converterRegistry.addConverter(new ObjectToObjectConverter());
converterRegistry.addConverter(new IdToEntityConverter((ConversionService) converterRegistry));
converterRegistry.addConverter(new FallbackObjectToStringConverter());
if (javaUtilOptionalClassAvailable) {
converterRegistry.addConverter(new ObjectToOptionalConverter((ConversionService) converterRegistry));
}
}

public static void addCollectionConverters(ConverterRegistry converterRegistry) {
ConversionService conversionService = (ConversionService) converterRegistry;


converterRegistry.addConverter(new ArrayToCollectionConverter(conversionService));
converterRegistry.addConverter(new CollectionToArrayConverter(conversionService));


converterRegistry.addConverter(new ArrayToArrayConverter(conversionService));
converterRegistry.addConverter(new CollectionToCollectionConverter(conversionService));
converterRegistry.addConverter(new MapToMapConverter(conversionService));


converterRegistry.addConverter(new ArrayToStringConverter(conversionService));
converterRegistry.addConverter(new StringToArrayConverter(conversionService));


converterRegistry.addConverter(new ArrayToObjectConverter(conversionService));
converterRegistry.addConverter(new ObjectToArrayConverter(conversionService));


converterRegistry.addConverter(new CollectionToStringConverter(conversionService));
converterRegistry.addConverter(new StringToCollectionConverter(conversionService));


converterRegistry.addConverter(new CollectionToObjectConverter(conversionService));
converterRegistry.addConverter(new ObjectToCollectionConverter(conversionService));


if (streamAvailable) {
converterRegistry.addConverter(new StreamConverter(conversionService));
}
}

private static void addScalarConverters(ConverterRegistry converterRegistry) {
converterRegistry.addConverterFactory(new NumberToNumberConverterFactory());


converterRegistry.addConverterFactory(new StringToNumberConverterFactory());
converterRegistry.addConverter(Number.class, String.class, new ObjectToStringConverter());


converterRegistry.addConverter(new StringToCharacterConverter());
converterRegistry.addConverter(Character.class, String.class, new ObjectToStringConverter());


converterRegistry.addConverter(new NumberToCharacterConverter());
converterRegistry.addConverterFactory(new CharacterToNumberFactory());


converterRegistry.addConverter(new StringToBooleanConverter());
converterRegistry.addConverter(Boolean.class, String.class, new ObjectToStringConverter());


converterRegistry.addConverterFactory(new StringToEnumConverterFactory());
converterRegistry.addConverter(Enum.class, String.class,
new EnumToStringConverter((ConversionService) converterRegistry));


converterRegistry.addConverter(new StringToLocaleConverter());
converterRegistry.addConverter(Locale.class, String.class, new ObjectToStringConverter());


converterRegistry.addConverter(new StringToCharsetConverter());
converterRegistry.addConverter(Charset.class, String.class, new ObjectToStringConverter());


converterRegistry.addConverter(new StringToCurrencyConverter());
converterRegistry.addConverter(Currency.class, String.class, new ObjectToStringConverter());


converterRegistry.addConverter(new StringToPropertiesConverter());
converterRegistry.addConverter(new PropertiesToStringConverter());


converterRegistry.addConverter(new StringToUUIDConverter());
converterRegistry.addConverter(UUID.class, String.class, new ObjectToStringConverter());
}

最后

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