org.springframework.core.convert.converter.GenericConverter.ConvertiblePair#org.springframework.core.convert.converter.ConverterFactory源码实例Demo

/**
 * Register the given Converter objects with the given target ConverterRegistry.
 * @param converters the converter objects: implementing {@link Converter},
 * {@link ConverterFactory}, or {@link GenericConverter}
 * @param registry the target registry
 */
public static void registerConverters(@Nullable Set<?> converters, ConverterRegistry registry) {
	if (converters != null) {
		for (Object converter : converters) {
			if (converter instanceof GenericConverter) {
				registry.addConverter((GenericConverter) converter);
			}
			else if (converter instanceof Converter<?, ?>) {
				registry.addConverter((Converter<?, ?>) converter);
			}
			else if (converter instanceof ConverterFactory<?, ?>) {
				registry.addConverterFactory((ConverterFactory<?, ?>) converter);
			}
			else {
				throw new IllegalArgumentException("Each converter object must implement one of the " +
						"Converter, ConverterFactory, or GenericConverter interfaces");
			}
		}
	}
}
 

/**
 * Register the given Converter objects with the given target ConverterRegistry.
 * @param converters the converter objects: implementing {@link Converter},
 * {@link ConverterFactory}, or {@link GenericConverter}
 * @param registry the target registry
 */
public static void registerConverters(@Nullable Set<?> converters, ConverterRegistry registry) {
	if (converters != null) {
		for (Object converter : converters) {
			if (converter instanceof GenericConverter) {
				registry.addConverter((GenericConverter) converter);
			}
			else if (converter instanceof Converter<?, ?>) {
				registry.addConverter((Converter<?, ?>) converter);
			}
			else if (converter instanceof ConverterFactory<?, ?>) {
				registry.addConverterFactory((ConverterFactory<?, ?>) converter);
			}
			else {
				throw new IllegalArgumentException("Each converter object must implement one of the " +
						"Converter, ConverterFactory, or GenericConverter interfaces");
			}
		}
	}
}
 

/**
 * Register the given Converter objects with the given target ConverterRegistry.
 * @param converters the converter objects: implementing {@link Converter},
 * {@link ConverterFactory}, or {@link GenericConverter}
 * @param registry the target registry
 */
public static void registerConverters(Set<?> converters, ConverterRegistry registry) {
	if (converters != null) {
		for (Object converter : converters) {
			if (converter instanceof GenericConverter) {
				registry.addConverter((GenericConverter) converter);
			}
			else if (converter instanceof Converter<?, ?>) {
				registry.addConverter((Converter<?, ?>) converter);
			}
			else if (converter instanceof ConverterFactory<?, ?>) {
				registry.addConverterFactory((ConverterFactory<?, ?>) converter);
			}
			else {
				throw new IllegalArgumentException("Each converter object must implement one of the " +
						"Converter, ConverterFactory, or GenericConverter interfaces");
			}
		}
	}
}
 

/**
 * Register custom converters within given
 * {@link org.springframework.core.convert.support.GenericConversionService}
 *
 * @param conversionService
 *            must not be null
 */
public void registerConvertersIn(GenericConversionService conversionService) {
	Assert.notNull(conversionService);

	for (Object converter : converters) {
		if (converter instanceof Converter) {
			conversionService.addConverter((Converter<?, ?>) converter);
		} else if (converter instanceof ConverterFactory) {
			conversionService.addConverterFactory((ConverterFactory<?, ?>) converter);
		} else if (converter instanceof GenericConverter) {
			conversionService.addConverter((GenericConverter) converter);
		} else {
			throw new IllegalArgumentException("Given object '" + converter
					+ "' expected to be a Converter, ConverterFactory or GenericeConverter!");
		}
	}
}
 

/**
 * Register the given Converter objects with the given target ConverterRegistry.
 * @param converters the converter objects: implementing {@link Converter},
 * {@link ConverterFactory}, or {@link GenericConverter}
 * @param registry the target registry
 */
public static void registerConverters(Set<?> converters, ConverterRegistry registry) {
	if (converters != null) {
		for (Object converter : converters) {
			if (converter instanceof GenericConverter) {
				registry.addConverter((GenericConverter) converter);
			}
			else if (converter instanceof Converter<?, ?>) {
				registry.addConverter((Converter<?, ?>) converter);
			}
			else if (converter instanceof ConverterFactory<?, ?>) {
				registry.addConverterFactory((ConverterFactory<?, ?>) converter);
			}
			else {
				throw new IllegalArgumentException("Each converter object must implement one of the " +
						"Converter, ConverterFactory, or GenericConverter interfaces");
			}
		}
	}
}
 

/**
 * Populates the given {@link GenericConversionService} with the converters registered.
 *
 * @param conversionService the service to register.
 */
public void registerConvertersIn(final GenericConversionService conversionService) {
  for (Object converter : converters) {
    boolean added = false;

    if (converter instanceof Converter) {
      conversionService.addConverter((Converter<?, ?>) converter);
      added = true;
    }

    if (converter instanceof ConverterFactory) {
      conversionService.addConverterFactory((ConverterFactory<?, ?>) converter);
      added = true;
    }

    if (converter instanceof GenericConverter) {
      conversionService.addConverter((GenericConverter) converter);
      added = true;
    }

    if (!added) {
      throw new IllegalArgumentException("Given set contains element that is neither Converter nor ConverterFactory!");
    }
  }
}
 

@Override
public void addConverterFactory(ConverterFactory<?, ?> factory) {
	ResolvableType[] typeInfo = getRequiredTypeInfo(factory.getClass(), ConverterFactory.class);
	if (typeInfo == null && factory instanceof DecoratingProxy) {
		typeInfo = getRequiredTypeInfo(((DecoratingProxy) factory).getDecoratedClass(), ConverterFactory.class);
	}
	if (typeInfo == null) {
		throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +
				"ConverterFactory [" + factory.getClass().getName() + "]; does the class parameterize those types?");
	}
	addConverter(new ConverterFactoryAdapter(factory,
			new ConvertiblePair(typeInfo[0].toClass(), typeInfo[1].toClass())));
}
 

@Autowired(required = false)
public void setConverterFactories(Set<ConverterFactory<?, ?>> converterFactories) {
    if (converterFactories != null) {
        for (ConverterFactory<?, ?> converterFactory : converterFactories) {
            addConverterFactory(converterFactory);
        }
    }
}
 

@Override
public void addConverterFactory(ConverterFactory<?, ?> factory) {
	ResolvableType[] typeInfo = getRequiredTypeInfo(factory.getClass(), ConverterFactory.class);
	if (typeInfo == null && factory instanceof DecoratingProxy) {
		typeInfo = getRequiredTypeInfo(((DecoratingProxy) factory).getDecoratedClass(), ConverterFactory.class);
	}
	if (typeInfo == null) {
		throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +
				"ConverterFactory [" + factory.getClass().getName() + "]; does the class parameterize those types?");
	}
	addConverter(new ConverterFactoryAdapter(factory,
			new ConvertiblePair(typeInfo[0].toClass(), typeInfo[1].toClass())));
}
 

@Override
public void addConverterFactory(ConverterFactory<?, ?> factory) {
	ResolvableType[] typeInfo = getRequiredTypeInfo(factory.getClass(), ConverterFactory.class);
	if (typeInfo == null && factory instanceof DecoratingProxy) {
		typeInfo = getRequiredTypeInfo(((DecoratingProxy) factory).getDecoratedClass(), ConverterFactory.class);
	}
	if (typeInfo == null) {
		throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +
				"ConverterFactory [" + factory.getClass().getName() + "]; does the class parameterize those types?");
	}
	addConverter(new ConverterFactoryAdapter(factory,
			new ConvertiblePair(typeInfo[0].resolve(), typeInfo[1].resolve())));
}
 

@Override
public void addConverterFactory(ConverterFactory<?, ?> converterFactory) {
	ResolvableType[] typeInfo = getRequiredTypeInfo(converterFactory, ConverterFactory.class);
	Assert.notNull(typeInfo, "Unable to the determine source type <S> and target range type R which your " +
			"ConverterFactory<S, R> converts between; declare these generic types.");
	addConverter(new ConverterFactoryAdapter(converterFactory,
			new ConvertiblePair(typeInfo[0].resolve(), typeInfo[1].resolve())));
}
 

@Test
public void proxiedConverterFactory() {
	ConverterFactory<?, ?> converterFactory = new IntegerConverterFactory();
	formattingService.addConverterFactory((ConverterFactory<?, ?>) new ProxyFactory(converterFactory).getProxy());
	assertEquals(Integer.valueOf(1), formattingService.convert("1", Integer.class));
}
 

public ConverterFactoryAdapter(ConverterFactory<?, ?> converterFactory, ConvertiblePair typeInfo) {
	this.converterFactory = (ConverterFactory<Object, Object>) converterFactory;
	this.typeInfo = typeInfo;
}
 

@Test
public void proxiedConverterFactory() {
	ConverterFactory<?, ?> converterFactory = new IntegerConverterFactory();
	formattingService.addConverterFactory((ConverterFactory<?, ?>) new ProxyFactory(converterFactory).getProxy());
	assertEquals(Integer.valueOf(1), formattingService.convert("1", Integer.class));
}
 

public ConverterFactoryAdapter(ConverterFactory<?, ?> converterFactory, ConvertiblePair typeInfo) {
	this.converterFactory = (ConverterFactory<Object, Object>) converterFactory;
	this.typeInfo = typeInfo;
}
 

public ConverterFactoryAdapter(ConverterFactory<?, ?> converterFactory, ConvertiblePair typeInfo) {
	this.converterFactory = (ConverterFactory<Object, Object>) converterFactory;
	this.typeInfo = typeInfo;
}
 

public ConverterFactoryAdapter(ConverterFactory<?, ?> converterFactory, ConvertiblePair typeInfo) {
	this.converterFactory = (ConverterFactory<Object, Object>) converterFactory;
	this.typeInfo = typeInfo;
}
 

@Bean
@ConditionalOnMissingBean(ConverterFactory.class)
public SpringConverterFactory springConverterFactory(ConversionService conversionService) {
	return new SpringConverterFactory(messageConverters, conversionService);
}