总分类 websocket测试 POST {{base}}/category/list/v2 响应参数 参数名 类型 描述 必填 error_code number 0代表正常 1代表失败 必填 msg string 返回调用信息 必填 category array 数据列表 必填 cover string 第一张封面 必填 category number 分类id 必填 categoryText string 分类名 必填 num number 图书数量 必填 cover2 string 第二张封面 必填 说明 / 示例 >i 返回示例 ```json { "error_code": 0, "msg": "查询成功", "data": [ { "cover": "https://www.youbaobao.xyz/book/res/img/Biomedicine/978-3-319-25474-6_CoverFigure.jpg", "category": 12, "categoryText": "Biomedicine", "num": 14, "cover2": "https://www.youbaobao.xyz/book/res/img/Biomedicine/978-3-319-72790-5_CoverFigure.jpg" }, { "cover": "https://www.youbaobao.xyz/book/res/img/BusinessandManagement/978-3-319-33515-5_CoverFigure.jpg", "category": 13, "categoryText": "BusinessandManagement", "num": 16, "cover2": "https://www.youbaobao.xyz/book/res/img/BusinessandManagement/978-3-319-95261-1_CoverFigure.jpg" }, { "cover": "https://www.youbaobao.xyz/book/res/img/ComputerScience/978-3-319-90415-3_CoverFigure.jpg", "category": 1, 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>i 返回示例 ```json { "error_code": 0, "msg": "查询成功", "data": [ { "cover": "https://www.youbaobao.xyz/book/res/img/Biomedicine/978-3-319-25474-6_CoverFigure.jpg", "category": 12, "categoryText": "Biomedicine", "num": 14, "cover2": "https://www.youbaobao.xyz/book/res/img/Biomedicine/978-3-319-72790-5_CoverFigure.jpg" }, { "cover": "https://www.youbaobao.xyz/book/res/img/BusinessandManagement/978-3-319-33515-5_CoverFigure.jpg", "category": 13, "categoryText": "BusinessandManagement", "num": 16, "cover2": "https://www.youbaobao.xyz/book/res/img/BusinessandManagement/978-3-319-95261-1_CoverFigure.jpg" }, { "cover": "https://www.youbaobao.xyz/book/res/img/ComputerScience/978-3-319-90415-3_CoverFigure.jpg", "category": 1, "categoryText": "ComputerScience", "num": 56, "cover2": "https://www.youbaobao.xyz/book/res/img/ComputerScience/978-3-319-96142-2_CoverFigure.jpg" }, { "cover": "https://www.youbaobao.xyz/book/res/img/EarthSciences/978-981-10-3713-9_CoverFigure.jpg", "category": 14, 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