private static String resolveFromRequestParameters(HttpServletRequest request) {
		String[] values = request.getParameterValues("access_token");
		if (values == null || values.length == 0) {
			return null;
		}
		if (values.length == 1) {
			return values[0];
		}
		BearerTokenError error = BearerTokenErrors.invalidRequest("Found multiple bearer tokens in the request");
		throw new OAuth2AuthenticationException(error);
	}
@author: zlt
@date: 2023/11/8
<p>
Blog: http://zlt2000.gitee.io
Github: https://github.com/zlt2000
zlt-commons/zlt-auth-client-spring-boot-starter/src/main/java/com/central/oauth2/common/component/CustomBearerTokenResolver.java