Java TypeConverter类代码示例

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Look up the JNDI object and store it.
 */
@Override
public void afterPropertiesSet() throws IllegalArgumentException, NamingException {
	super.afterPropertiesSet();

	if (this.proxyInterfaces != null || !this.lookupOnStartup || !this.cache || this.exposeAccessContext) {
		// We need to create a proxy for this...
		if (this.defaultObject != null) {
			throw new IllegalArgumentException(
					"'defaultObject' is not supported in combination with 'proxyInterface'");
		}
		// We need a proxy and a JndiObjectTargetSource.
		this.jndiObject = JndiObjectProxyFactory.createJndiObjectProxy(this);
	}
	else {
		if (this.defaultObject != null && getExpectedType() != null &&
				!getExpectedType().isInstance(this.defaultObject)) {
			TypeConverter converter = (this.beanFactory != null ?
					this.beanFactory.getTypeConverter() : new SimpleTypeConverter());
			try {
				this.defaultObject = converter.convertIfNecessary(this.defaultObject, getExpectedType());
			}
			catch (TypeMismatchException ex) {
				throw new IllegalArgumentException("Default object [" + this.defaultObject + "] of type [" +
						this.defaultObject.getClass().getName() + "] is not of expected type [" +
						getExpectedType().getName() + "] and cannot be converted either", ex);
			}
		}
		// Locate specified JNDI object.
		this.jndiObject = lookupWithFallback();
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
@Override
public Object resolveDependency(DependencyDescriptor descriptor, String beanName,
		Set<String> autowiredBeanNames, TypeConverter typeConverter) throws BeansException {

	descriptor.initParameterNameDiscovery(getParameterNameDiscoverer());
	if (descriptor.getDependencyType().equals(ObjectFactory.class)) {
		return new DependencyObjectFactory(descriptor, beanName);
	}
	else if (descriptor.getDependencyType().equals(javaxInjectProviderClass)) {
		return new DependencyProviderFactory().createDependencyProvider(descriptor, beanName);
	}
	else {
		Object result = getAutowireCandidateResolver().getLazyResolutionProxyIfNecessary(descriptor, beanName);
		if (result == null) {
			result = doResolveDependency(descriptor, beanName, autowiredBeanNames, typeConverter);
		}
		return result;
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Resolve the prepared arguments stored in the given bean definition.
 */
private Object[] resolvePreparedArguments(
		String beanName, RootBeanDefinition mbd, BeanWrapper bw, Member methodOrCtor, Object[] argsToResolve) {

	Class<?>[] paramTypes = (methodOrCtor instanceof Method ?
			((Method) methodOrCtor).getParameterTypes() : ((Constructor<?>) methodOrCtor).getParameterTypes());
	TypeConverter converter = (this.beanFactory.getCustomTypeConverter() != null ?
			this.beanFactory.getCustomTypeConverter() : bw);
	BeanDefinitionValueResolver valueResolver =
			new BeanDefinitionValueResolver(this.beanFactory, beanName, mbd, converter);
	Object[] resolvedArgs = new Object[argsToResolve.length];
	for (int argIndex = 0; argIndex < argsToResolve.length; argIndex++) {
		Object argValue = argsToResolve[argIndex];
		MethodParameter methodParam = MethodParameter.forMethodOrConstructor(methodOrCtor, argIndex);
		GenericTypeResolver.resolveParameterType(methodParam, methodOrCtor.getDeclaringClass());
		if (argValue instanceof AutowiredArgumentMarker) {
			argValue = resolveAutowiredArgument(methodParam, beanName, null, converter);
		}
		else if (argValue instanceof BeanMetadataElement) {
			argValue = valueResolver.resolveValueIfNecessary("constructor argument", argValue);
		}
		else if (argValue instanceof String) {
			argValue = this.beanFactory.evaluateBeanDefinitionString((String) argValue, mbd);
		}
		Class<?> paramType = paramTypes[argIndex];
		try {
			resolvedArgs[argIndex] = converter.convertIfNecessary(argValue, paramType, methodParam);
		}
		catch (TypeMismatchException ex) {
			String methodType = (methodOrCtor instanceof Constructor ? "constructor" : "factory method");
			throw new UnsatisfiedDependencyException(
					mbd.getResourceDescription(), beanName, argIndex, paramType,
					"Could not convert " + methodType + " argument value of type [" +
					ObjectUtils.nullSafeClassName(argValue) +
					"] to required type [" + paramType.getName() + "]: " + ex.getMessage());
		}
	}
	return resolvedArgs;
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
@Override
public Object resolveDependency(DependencyDescriptor descriptor, String beanName,
		Set<String> autowiredBeanNames, TypeConverter typeConverter) throws BeansException {

	descriptor.initParameterNameDiscovery(getParameterNameDiscoverer());
	if (descriptor.getDependencyType().equals(javaUtilOptionalClass)) {
		return new OptionalDependencyFactory().createOptionalDependency(descriptor, beanName);
	}
	else if (ObjectFactory.class == descriptor.getDependencyType()) {
		return new DependencyObjectFactory(descriptor, beanName);
	}
	else if (javaxInjectProviderClass == descriptor.getDependencyType()) {
		return new DependencyProviderFactory().createDependencyProvider(descriptor, beanName);
	}
	else {
		Object result = getAutowireCandidateResolver().getLazyResolutionProxyIfNecessary(descriptor, beanName);
		if (result == null) {
			result = doResolveDependency(descriptor, beanName, autowiredBeanNames, typeConverter);
		}
		return result;
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
@Override
public Object resolveDependency(DependencyDescriptor descriptor, String beanName,
                                Set<String> autowiredBeanNames,
                                TypeConverter typeConverter) throws BeansException {
    if (descriptor == null
            || descriptor.getField() == null
            || !descriptor.getField().getType().equals(Ignite.class))
        return super.resolveDependency(descriptor, beanName,
                autowiredBeanNames, typeConverter);
    else {
        if (configuration == null)
            configuration = new IgniteSpringBootConfiguration(
                    createBean(DefaultIgniteProperties.class));
        return configuration.getIgnite(
                descriptor.getField().getAnnotationsByType(IgniteResource.class));
    }
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
@Override
public Object resolveDependency(DependencyDescriptor descriptor, String beanName,
		Set<String> autowiredBeanNames, TypeConverter typeConverter) throws BeansException {

	descriptor.initParameterNameDiscovery(getParameterNameDiscoverer());
	if (descriptor.getDependencyType().equals(javaUtilOptionalClass)) {
		return new OptionalDependencyFactory().createOptionalDependency(descriptor, beanName);
	}
	else if (ObjectFactory.class == descriptor.getDependencyType() ||
			ObjectProvider.class == descriptor.getDependencyType()) {
		return new DependencyObjectProvider(descriptor, beanName);
	}
	else if (javaxInjectProviderClass == descriptor.getDependencyType()) {
		return new Jsr330ProviderFactory().createDependencyProvider(descriptor, beanName);
	}
	else {
		Object result = getAutowireCandidateResolver().getLazyResolutionProxyIfNecessary(descriptor, beanName);
		if (result == null) {
			result = doResolveDependency(descriptor, beanName, autowiredBeanNames, typeConverter); // 解析依赖
		}
		return result;
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
@Override
public Object resolveDependency(DependencyDescriptor descriptor, String beanName, Set<String> autowiredBeanNames,
                                TypeConverter typeConverter) throws BeansException {
    Field field = descriptor.getField();

    if (field != null && Logger.class == descriptor.getDependencyType()) {
        return LoggerFactory.getLogger(getDeclaringClass(descriptor));
    }

    if (field != null && Config.class.isAssignableFrom(field.getType())) {
        return getConfig(field.getType());
    }
    MethodParameter methodParam = descriptor.getMethodParameter();
    if (methodParam != null && Config.class.isAssignableFrom(methodParam.getParameterType())) {
        return getConfig(methodParam.getParameterType());
    }
    return super.resolveDependency(descriptor, beanName, autowiredBeanNames, typeConverter);
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
private Object resolveValue(Method method) {
    Value val = AnnotationUtils.findAnnotation(method, Value.class);
    if (val != null) {
        if (LOG.isDebugEnabled()) {
            LOG.debug(String.format("Resolving @Value annotation on %s with key %s",
                    method.getName(), val.value()));
        }
        ConfigurableBeanFactory beanFactory = (ConfigurableBeanFactory) getBeanFactory();
        String strValue = beanFactory.resolveEmbeddedValue(val.value());
        BeanExpressionResolver resolver = beanFactory.getBeanExpressionResolver();

        Object unconvertedResult = resolver.evaluate(strValue, new BeanExpressionContext(beanFactory, null));
        TypeConverter converter = beanFactory.getTypeConverter();
        return converter.convertIfNecessary(unconvertedResult, method.getReturnType());
    }
    String message = "Method %s on interface %s must be annotated with @Value for auto-properties to work!";
    throw new AutoPropertiesException(String.format(message, method.getName(), method.getDeclaringClass().getName()));
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
private TypeConverter getConverter() {
	if (typeConverter == null) {
		SimpleTypeConverter simpleConverter = new SimpleTypeConverter();
		beanFactory.copyRegisteredEditorsTo(simpleConverter);
		simpleConverter.setConversionService(beanFactory.getConversionService());
		typeConverter = simpleConverter;
	}
	return typeConverter;
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Return the underlying TypeConverter of this binder's BindingResult.
 */
protected TypeConverter getTypeConverter() {
	if (getTarget() != null) {
		return getInternalBindingResult().getPropertyAccessor();
	}
	else {
		return getSimpleTypeConverter();
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Template method for resolving the specified argument which is supposed to be autowired.
 */
protected Object resolveAutowiredArgument(
		MethodParameter param, String beanName, Set<String> autowiredBeanNames, TypeConverter typeConverter) {

	return this.beanFactory.resolveDependency(
			new DependencyDescriptor(param, true), beanName, autowiredBeanNames, typeConverter);
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
@Override
public TypeConverter getTypeConverter() {
	TypeConverter customConverter = getCustomTypeConverter();
	if (customConverter != null) {
		return customConverter;
	}
	else {
		// Build default TypeConverter, registering custom editors.
		SimpleTypeConverter typeConverter = new SimpleTypeConverter();
		typeConverter.setConversionService(getConversionService());
		registerCustomEditors(typeConverter);
		return typeConverter;
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Abstract method defining "autowire by type" (bean properties by type) behavior.
 * <p>This is like PicoContainer default, in which there must be exactly one bean
 * of the property type in the bean factory. This makes bean factories simple to
 * configure for small namespaces, but doesn't work as well as standard Spring
 * behavior for bigger applications.
 * @param beanName the name of the bean to autowire by type
 * @param mbd the merged bean definition to update through autowiring
 * @param bw BeanWrapper from which we can obtain information about the bean
 * @param pvs the PropertyValues to register wired objects with
 */
protected void autowireByType(
		String beanName, AbstractBeanDefinition mbd, BeanWrapper bw, MutablePropertyValues pvs) {

	TypeConverter converter = getCustomTypeConverter();
	if (converter == null) {
		converter = bw;
	}

	Set<String> autowiredBeanNames = new LinkedHashSet<String>(4);
	String[] propertyNames = unsatisfiedNonSimpleProperties(mbd, bw);
	for (String propertyName : propertyNames) {
		try {
			PropertyDescriptor pd = bw.getPropertyDescriptor(propertyName);
			// Don't try autowiring by type for type Object: never makes sense,
			// even if it technically is a unsatisfied, non-simple property.
			if (!Object.class.equals(pd.getPropertyType())) {
				MethodParameter methodParam = BeanUtils.getWriteMethodParameter(pd);
				// Do not allow eager init for type matching in case of a prioritized post-processor.
				boolean eager = !PriorityOrdered.class.isAssignableFrom(bw.getWrappedClass());
				DependencyDescriptor desc = new AutowireByTypeDependencyDescriptor(methodParam, eager);
				Object autowiredArgument = resolveDependency(desc, beanName, autowiredBeanNames, converter);
				if (autowiredArgument != null) {
					pvs.add(propertyName, autowiredArgument);
				}
				for (String autowiredBeanName : autowiredBeanNames) {
					registerDependentBean(autowiredBeanName, beanName);
					if (logger.isDebugEnabled()) {
						logger.debug("Autowiring by type from bean name '" + beanName + "' via property '" +
								propertyName + "' to bean named '" + autowiredBeanName + "'");
					}
				}
				autowiredBeanNames.clear();
			}
		}
		catch (BeansException ex) {
			throw new UnsatisfiedDependencyException(mbd.getResourceDescription(), beanName, propertyName, ex);
		}
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Convert the given value for the specified target property.
 */
private Object convertForProperty(Object value, String propertyName, BeanWrapper bw, TypeConverter converter) {
	if (converter instanceof BeanWrapperImpl) {
		return ((BeanWrapperImpl) converter).convertForProperty(value, propertyName);
	}
	else {
		PropertyDescriptor pd = bw.getPropertyDescriptor(propertyName);
		MethodParameter methodParam = BeanUtils.getWriteMethodParameter(pd);
		return converter.convertIfNecessary(value, pd.getPropertyType(), methodParam);
	}
}
 

import org.springframework.beans.TypeConverter; //导入依赖的package包/类
/**
 * Create a BeanDefinitionValueResolver for the given BeanFactory and BeanDefinition.
 * @param beanFactory the BeanFactory to resolve against
 * @param beanName the name of the bean that we work on
 * @param beanDefinition the BeanDefinition of the bean that we work on
 * @param typeConverter the TypeConverter to use for resolving TypedStringValues
 */
public BeanDefinitionValueResolver(
		AbstractBeanFactory beanFactory, String beanName, BeanDefinition beanDefinition, TypeConverter typeConverter) {

	this.beanFactory = beanFactory;
	this.beanName = beanName;
	this.beanDefinition = beanDefinition;
	this.typeConverter = typeConverter;
}