I ran calibre directly from source, found that, old key can not be replaced directly with the key which i found.
Because, calibre are using api '...api.douban.com/book/subject/isbn/...', which is an old XML api, it can not be used anymore. What i had done a test, using api '...api.douban.com/v2/book/isbn/...', which is JSON api. there was still much to be done.
I ran calibre directly from source, found that, old key can not be replaced directly with the key which i found.
Because, calibre are using api '...api. douban. com/book/ subject/ isbn/.. .', which is an old XML api, it can not be used anymore. What i had done a test, using api '...api. douban. com/v2/ book/isbn/ ...', which is JSON api. there was still much to be done.