spring-projects/spring-framework · error · UnsupportedOperationException

TypeDescriptor resolution not supported

Error message

TypeDescriptor resolution not supported

What it means

Error "TypeDescriptor resolution not supported" thrown in spring-projects/spring-framework.

Source

Thrown at spring-beans/src/main/java/org/springframework/beans/TypeConverter.java:114

	 * Convert the value to the required type (if necessary from a String).
	 * <p>Conversions from String to any type will typically use the {@code setAsText}
	 * method of the PropertyEditor class, or a Spring Converter in a ConversionService.
	 * @param value the value to convert
	 * @param requiredType the type we must convert to
	 * (or {@code null} if not known, for example in case of a collection element)
	 * @param typeDescriptor the type descriptor to use (may be {@code null}))
	 * @return the new value, possibly the result of type conversion
	 * @throws TypeMismatchException if type conversion failed
	 * @since 5.1.4
	 * @see java.beans.PropertyEditor#setAsText(String)
	 * @see java.beans.PropertyEditor#getValue()
	 * @see org.springframework.core.convert.ConversionService
	 * @see org.springframework.core.convert.converter.Converter
	 */
	default <T> @Nullable T convertIfNecessary(@Nullable Object value, @Nullable Class<T> requiredType,
			@Nullable TypeDescriptor typeDescriptor) throws TypeMismatchException {

		throw new UnsupportedOperationException("TypeDescriptor resolution not supported");
	}

}

View on GitHub (pinned to e8729d0438)

When it happens

Trigger: Thrown at spring-beans/src/main/java/org/springframework/beans/TypeConverter.java:114 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of spring-projects/spring-framework@e8729d0438 (2026-08-04). Data as JSON: /data/errors/c2904f9bf25767f1.json. Report an issue: GitHub.