theonedev/onedev · error · java.lang.IllegalArgumentException

Request string '{string}' is not a valid integer

Error message

Request string '{string}' is not a valid integer

What it means

Wicket FormComponent.inputAsInt parses the request parameter with Integer.parseInt and wraps NumberFormatException into an IllegalArgumentException with a component-scoped message; the submitted string is not a valid integer.

Source

Thrown at server-core/src/main/java/org/apache/wicket/markup/html/form/FormComponent.java:1380

	 * Gets the request parameter for this component as an int, using the given default in case no
	 * corresponding request parameter was found.
	 * 
	 * @param defaultValue
	 *            Default value to return if request does not have an integer for this component
	 * @return The value in the request for this component
	 */
	protected final int inputAsInt(final int defaultValue)
	{
		final String string = getInput();
		if (string != null)
		{
			try
			{
				return Integer.parseInt(string);
			}
			catch (NumberFormatException e)
			{
				throw new IllegalArgumentException(exceptionMessage("Request string '" + string +
					"' is not a valid integer"));
			}
		}
		else
		{
			return defaultValue;
		}
	}

	/**
	 * Gets the request parameters for this component as ints.
	 * 
	 * @return The values in the request for this component
	 */
	protected final int[] inputAsIntArray()
	{
		final String[] strings = getInputAsArray();
		if (strings != null)

View on GitHub (pinned to d44925c47c)

Solutions

1. Send an integer value for the form component's request parameter.
2. Use inputAsInt(defaultValue) semantics: absent parameters are fine, but present ones must parse.

When it happens

Trigger: Thrown at server-core/src/main/java/org/apache/wicket/markup/html/form/FormComponent.java:1380 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of theonedev/onedev@d44925c47c (2026-09-06). Data as JSON: /api/errors/262bb4fd6867fdcc. Report an issue: GitHub.