@NonNull
private static Object resolveExpression(ApplicationContext applicationContext, String name) {
  if (applicationContext instanceof ConfigurableApplicationContext) {
    ConfigurableBeanFactory configurableBeanFactory =
        ((ConfigurableApplicationContext) applicationContext).getBeanFactory();
    String placeholdersResolved = configurableBeanFactory.resolveEmbeddedValue(name);
    BeanExpressionResolver exprResolver = configurableBeanFactory.getBeanExpressionResolver();
    if (exprResolver == null) {
      return name;
    }
    Object result =
        exprResolver.evaluate(
            placeholdersResolved, new BeanExpressionContext(configurableBeanFactory, null));
    if (result != null) {
      return result;
    }
  }
  return name;
}
 

@Test
public void testExpressionInStringArray() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	BeanExpressionResolver beanExpressionResolver = mock(BeanExpressionResolver.class);
	given(beanExpressionResolver.evaluate(eq("#{foo}"), any(BeanExpressionContext.class)))
			.willReturn("classpath:/org/springframework/beans/factory/xml/util.properties");
	bf.setBeanExpressionResolver(beanExpressionResolver);

	RootBeanDefinition rbd = new RootBeanDefinition(PropertiesFactoryBean.class);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("locations", new String[]{"#{foo}"});
	rbd.setPropertyValues(pvs);
	bf.registerBeanDefinition("myProperties", rbd);
	Properties properties = (Properties) bf.getBean("myProperties");
	assertEquals("bar", properties.getProperty("foo"));
}
 

@Test
public void testExpressionInStringArray() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	BeanExpressionResolver beanExpressionResolver = mock(BeanExpressionResolver.class);
	when(beanExpressionResolver.evaluate(eq("#{foo}"), ArgumentMatchers.any(BeanExpressionContext.class)))
			.thenReturn("classpath:/org/springframework/beans/factory/xml/util.properties");
	bf.setBeanExpressionResolver(beanExpressionResolver);

	RootBeanDefinition rbd = new RootBeanDefinition(PropertiesFactoryBean.class);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("locations", new String[]{"#{foo}"});
	rbd.setPropertyValues(pvs);
	bf.registerBeanDefinition("myProperties", rbd);
	Properties properties = (Properties) bf.getBean("myProperties");
	assertEquals("bar", properties.getProperty("foo"));
}
 

private <T> T resolveAnnotationValue(Object value, Class<T> requiredType, String paramName) {
    if (value == null) {
        return null;
    }
    TypeConverter typeConverter = beanFactory.getTypeConverter();

    if (value instanceof String) {
        String strVal = beanFactory.resolveEmbeddedValue((String) value);
        BeanExpressionResolver beanExpressionResolver = beanFactory.getBeanExpressionResolver();
        if (beanExpressionResolver != null) {
            value = beanExpressionResolver.evaluate(strVal, new BeanExpressionContext(beanFactory, null));
        } else {
            value = strVal;
        }
    }
    try {
        return typeConverter.convertIfNecessary(value, requiredType);
    } catch (TypeMismatchException e) {
        throw new IllegalArgumentException("Failed to convert value of parameter '" + paramName + "' to required type '" + requiredType.getName() + "'");
    }
}
 

@Test
public void testExpressionInStringArray() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	BeanExpressionResolver beanExpressionResolver = mock(BeanExpressionResolver.class);
	when(beanExpressionResolver.evaluate(eq("#{foo}"), Matchers.any(BeanExpressionContext.class)))
			.thenReturn("classpath:/org/springframework/beans/factory/xml/util.properties");
	bf.setBeanExpressionResolver(beanExpressionResolver);

	RootBeanDefinition rbd = new RootBeanDefinition(PropertiesFactoryBean.class);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("locations", new String[]{"#{foo}"});
	rbd.setPropertyValues(pvs);
	bf.registerBeanDefinition("myProperties", rbd);
	Properties properties = (Properties) bf.getBean("myProperties");
	assertEquals("bar", properties.getProperty("foo"));
}
 

private String resolveName(String name) {
	if (!(this.beanFactory instanceof ConfigurableBeanFactory)) {
		return name;
	}

	ConfigurableBeanFactory configurableBeanFactory = (ConfigurableBeanFactory) this.beanFactory;

	String placeholdersResolved = configurableBeanFactory.resolveEmbeddedValue(name);
	BeanExpressionResolver exprResolver = configurableBeanFactory
			.getBeanExpressionResolver();
	if (exprResolver == null) {
		return name;
	}
	Object result = exprResolver.evaluate(placeholdersResolved,
			new BeanExpressionContext(configurableBeanFactory, null));
	return result != null ? result.toString() : name;
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
@Nullable
private Object resolveEmbeddedValuesAndExpressions(String value) {
	if (this.configurableBeanFactory == null || this.expressionContext == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
@Nullable
private Object resolveEmbeddedValuesAndExpressions(String value) {
	if (this.configurableBeanFactory == null || this.expressionContext == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
@Nullable
private Object resolveStringValue(String value) {
	if (this.configurableBeanFactory == null || this.expressionContext == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
@Nullable
private Object resolveStringValue(String value) {
	if (this.configurableBeanFactory == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null || this.expressionContext == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
private Object resolveStringValue(String value) {
	if (this.configurableBeanFactory == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
@Nullable
private Object resolveStringValue(String value) {
	if (this.configurableBeanFactory == null || this.expressionContext == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
@Nullable
private Object resolveStringValue(String value) {
	if (this.configurableBeanFactory == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null || this.expressionContext == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

@Override
protected Object resolveDefaultValue(String value) {
	if (beanFactory == null) {
		return value;
	}
	String placeholdersResolved = beanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = beanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, expressionContext);
}
 

/**
 * Resolve the given annotation-specified value,
 * potentially containing placeholders and expressions.
 */
private Object resolveStringValue(String value) {
	if (this.configurableBeanFactory == null) {
		return value;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

/**
 * Resolves the given default value into an argument value.
 */
private Object resolveDefaultValue(String defaultValue) {
	if (this.configurableBeanFactory == null) {
		return defaultValue;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(defaultValue);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return defaultValue;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

@Override
protected Object resolveDefaultValue(String value) {
	if (beanFactory == null) {
		return value;
	}
	String placeholdersResolved = beanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = beanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, expressionContext);
}
 

@Override
protected Object resolveDefaultValue(String value) {
	if (beanFactory == null) {
		return value;
	}
	String placeholdersResolved = beanFactory.resolveEmbeddedValue(value);
	BeanExpressionResolver exprResolver = beanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return value;
	}
	return exprResolver.evaluate(placeholdersResolved, expressionContext);
}
 

/**
 * Resolves the given default value into an argument value.
 */
private Object resolveDefaultValue(String defaultValue) {
	if (this.configurableBeanFactory == null) {
		return defaultValue;
	}
	String placeholdersResolved = this.configurableBeanFactory.resolveEmbeddedValue(defaultValue);
	BeanExpressionResolver exprResolver = this.configurableBeanFactory.getBeanExpressionResolver();
	if (exprResolver == null) {
		return defaultValue;
	}
	return exprResolver.evaluate(placeholdersResolved, this.expressionContext);
}
 

private Map<String, Object> buildExportProperties() {
	Map<String, Object> props = new HashMap<>();
	if (!ObjectUtils.isEmpty(this.properties)) {
		Map<String, String> target = bindProperties();

		BeanExpressionResolver beanExpressionResolver = ((ConfigurableApplicationContext) this.applicationContext)
				.getBeanFactory().getBeanExpressionResolver();
		BeanExpressionContext expressionContext = new BeanExpressionContext(
				((ConfigurableApplicationContext) this.applicationContext)
						.getBeanFactory(),
				null);
		for (Entry<String, String> entry : target.entrySet()) {
			if (isMatch(entry.getKey(), this.properties, null)) {
				String stringValue = ObjectUtils.nullSafeToString(entry.getValue());
				Object exportedValue = null;
				if (stringValue != null) {
					exportedValue = stringValue.startsWith("#{")
							? beanExpressionResolver.evaluate(
									this.environment.resolvePlaceholders(stringValue),
									expressionContext)
							: this.environment.resolvePlaceholders(stringValue);
				}

				props.put(entry.getKey(), exportedValue);
			}
		}
	}
	return props;
}
 

private String[] resolveName(String name) {
	if (!(getApplicationContext() instanceof ConfigurableApplicationContext)) {
		return wrapInStringArray(name);
	}

	ConfigurableApplicationContext applicationContext = (ConfigurableApplicationContext) getApplicationContext();
	ConfigurableBeanFactory configurableBeanFactory = applicationContext
			.getBeanFactory();

	String placeholdersResolved = configurableBeanFactory.resolveEmbeddedValue(name);
	BeanExpressionResolver exprResolver = configurableBeanFactory
			.getBeanExpressionResolver();
	if (exprResolver == null) {
		return wrapInStringArray(name);
	}
	Object result = exprResolver.evaluate(placeholdersResolved,
			new BeanExpressionContext(configurableBeanFactory, null));
	if (result instanceof String[]) {
		return (String[]) result;
	}
	else if (result != null) {
		return wrapInStringArray(result);
	}
	else {
		return wrapInStringArray(name);
	}
}
 

@Override
public void setBeanExpressionResolver(@Nullable BeanExpressionResolver resolver) {
	this.beanExpressionResolver = resolver;
}
 

@Override
@Nullable
public BeanExpressionResolver getBeanExpressionResolver() {
	return this.beanExpressionResolver;
}
 

@Override
public void setBeanExpressionResolver(@Nullable BeanExpressionResolver resolver) {
	this.beanExpressionResolver = resolver;
}
 

@Override
@Nullable
public BeanExpressionResolver getBeanExpressionResolver() {
	return this.beanExpressionResolver;
}
 

@Override
public void setBeanExpressionResolver(BeanExpressionResolver resolver) {
	this.beanExpressionResolver = resolver;
}
 

@Override
public BeanExpressionResolver getBeanExpressionResolver() {
	return this.beanExpressionResolver;
}
 

@Override
public void setBeanExpressionResolver(BeanExpressionResolver resolver) {
	this.beanExpressionResolver = resolver;
}
 

@Override
public BeanExpressionResolver getBeanExpressionResolver() {
	return this.beanExpressionResolver;
}
 

@Override
public void setBeanExpressionResolver(BeanExpressionResolver resolver) {
	this.beanExpressionResolver = resolver;
}