jodd-joy/src/main/java/jodd/joy/auth/AuthAction.java
protected T loginViaBasicAuth(final HttpServletRequest servletRequest) {
		final String username = ServletUtil.resolveAuthUsername(servletRequest);
		if (username == null) {
			return null;
		}
		final String password = ServletUtil.resolveAuthPassword(servletRequest);

		return userAuth.login(username, password);
	}
protected T loginViaBasicAuth(final HttpServletRequest servletRequest) {
		final String username = ServletUtil.resolveAuthUsername(servletRequest);
		if (username == null) {
			return null;
		}
		final String password = ServletUtil.resolveAuthPassword(servletRequest);

		return userAuth.login(username, password);
	}
Tries to login user with basic authentication.