我正在尝试生成oauth_signature以使用FatsecretAPI,但出现无效签名错误。要创建oauth_signature值,文档说:UsetheHMAC-SHA1signaturealgorithmasdefinedbythe[RFC2104]tosigntherequestwheretextistheSignatureBaseStringandkeyistheconcatenatedvaluesoftheConsumerSecretandAccessSecretseparatedbya'&'character(show'&'evenifAccessSecretisempt