在这里插入图片描述

上面是京东的商品搜索页面 可以分为四个部分
在这里插入图片描述
1就是根据关键字搜索商品 然后搜索出来之后 商品会有品牌 品牌就是2 然后3是商品的属性 4是一些条件 2跟3根据不同的商品展示的东西也不一样会根据后台的值决定展示什么 2是商品的品牌也是对所有商品的品牌进行分组然后得到所有的品牌这里还要得到品牌的logo一起展示在2的位置 3是商品的属性要根据所有商品锁分组查出都有哪些属性然后放在这 如果用mysql这种磁盘数据库在高并发场景下使用模糊查询 肯定会炸 所以使用es 因为es存储数据的时候会对数据进行分词 比如 我爱你am 它会把这一句分成 我爱你 跟 am 并且还会把我爱你am这一句话保存下来并把这一句的所在位置（内存地址或者说磁盘地址）放在我爱你的后面 就是一个key value结构 key是我爱你 value是内存地址 这个内存地址会有多个 然后你搜索关键字的时候 我爱你xx它把关键字进行分词 分成我爱你 跟 xx 然后比如它就会先去找我爱你这个主键的value 然后再去找xx的主键的value 然后根据value的值去磁盘文件或者内存中查找 这样的机制让es支持了高并发 es这么猛为什么还要用mysql？我感觉es语法很乱如果关联关系做的很多那么写查询就很麻烦 es对关联关系支持的也不是很好只能当做搜索引擎用 具体原因自行百度

使用es设计京东的搜索页面

创建索引库

PUT product_db
{
  "mappings": {
    "properties": {
      "id": {
        "type": "long"
      },
      "name": {
        "type": "text",
        "analyzer": "ik_max_word"
      },
      "keywords": {
        "type": "text",
        "analyzer": "ik_max_word"
      },
      "subTitle": {
        "type": "text",
        "analyzer": "ik_max_word"
      },
      "salecount":{
        "type": "long"
      },
       "putawayDate":{
        "type": "date"
      },
      "price": {
        "type": "double"
      },
      
      "promotionPrice": {
        "type": "keyword"
      },
      "originalPrice": {
        "type": "keyword"
      },
      "pic": {
        "type": "keyword"
      },
      "sale": {
        "type": "long"
      },
      "hasStock": {
        "type": "boolean"
      },
      "brandId": {
        "type": "long"
      },
      "brandName": {
        "type": "keyword"
      },
      "brandImg": {
        "type": "keyword"
      },
      "categoryId": {
        "type": "long"
      },
      "categoryName": {
        "type": "keyword"
      },
      "attrs": {
        "type": "nested",
        "properties": {
          "attrId": {
            "type": "long"
          },
          "attrName": {
            "type": "keyword"
          },
          "attrValue": {
            "type": "keyword"
          }
        }
      }
    }
  }
}

添加一点数据

PUT /product_db/_doc/1
{
  "id": "26",
  "name": "小米 11 手机",
  "keywords": "小米手机",
  "subTitle": "AI智慧全面屏 6GB +64GB 亮黑色 全网通版 移动联通电信4G手机 双卡双待 双卡双待",
  "price": "3999",
  "promotionPrice": "2999",
  "originalPrice": "5999",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/xiaomi.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":999,
  "putawayDate":"2021-04-01",
  "brandId": 6,
  "brandName": "小米",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/1e34aef2a409119018a4c6258e39ecfb_222_222.png",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 1,
      "attrName": "cpu",
      "attrValue": "2核"
    },
    {
      "attrId": 2,
      "attrName": "颜色",
      "attrValue": "黑色"
    }
  ]
}

PUT /product_db/_doc/2
{
  "id": "27",
  "name": "小米 10 手机",
  "keywords": "小米手机",
  "subTitle": "AI智慧全面屏 4GB +64GB 亮白色 全网通版 移动联通电信4G手机 双卡双待 双卡双待",
  "price": "2999",
  "promotionPrice": "1999",
  "originalPrice": "3999",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/xiaomi.jpg",
  "sale": 999,
  "hasStock": false,
  "salecount":99,
  "putawayDate":"2021-04-02",
  "brandId": 6,
  "brandName": "小米",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/1e34aef2a409119018a4c6258e39ecfb_222_222.png",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 1,
      "attrName": "cpu",
      "attrValue": "4核"
    },
    {
      "attrId": 2,
      "attrName": "颜色",
      "attrValue": "白色"
    }
  ]
}
PUT /product_db/_doc/3
{
  "id": "28",
  "name": "小米  手机",
  "keywords": "小米手机",
  "subTitle": "AI智慧全面屏 4GB +64GB 亮蓝色 全网通版 移动联通电信4G手机 双卡双待 双卡双待",
  "price": "2999",
  "promotionPrice": "1999",
  "originalPrice": "3999",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/xiaomi.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":199,
  "putawayDate":"2021-04-03",
  "brandId": 6,
  "brandName": "小米",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/1e34aef2a409119018a4c6258e39ecfb_222_222.png",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 1,
      "attrName": "cpu",
      "attrValue": "2核"
    },
    {
      "attrId": 2,
      "attrName": "颜色",
      "attrValue": "蓝色"
    }
  ]
}
PUT /product_db/_doc/4
{
  "id": "29",
  "name": "Apple iPhone 8 Plus 64GB 金色特别版 移动联通电信4G手机",
  "keywords": "苹果手机",
  "subTitle": "苹果手机 Apple产品年中狂欢节，好物尽享，美在智慧！速来 >> 勾选[保障服务][原厂保2年]，获得AppleCare+全方位服务计划，原厂延保售后无忧。",
  "price": "5999",
  "promotionPrice": "4999",
  "originalPrice": "7999",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5acc5248N6a5f81cd.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":1199,
  "putawayDate":"2021-04-04",
  "brandId": 51,
  "brandName": "苹果",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg.jpg",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 1,
      "attrName": "cpu",
      "attrValue": "4核"
    },
    {
      "attrId": 2,
      "attrName": "颜色",
      "attrValue": "金色"
    }
  ]
}
PUT /product_db/_doc/5
{
  "id": "30",
  "name": "HLA海澜之家简约动物印花短袖T恤",
  "keywords": "海澜之家衣服",
  "subTitle": "HLA海澜之家短袖T恤",
  "price": "199",
  "promotionPrice": "99",
  "originalPrice": "299",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5ad83a4fN6ff67ecd.jpg!cc_350x449.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":19,
  "putawayDate":"2021-04-05",
  "brandId": 50,
  "brandName": "海澜之家",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/99d3279f1029d32b929343b09d3c72de_222_222.jpg",
  "categoryId": 8,
  "categoryName": "T恤",
  "attrs": [
    {
      "attrId": 3,
      "attrName": "尺寸",
      "attrValue": "M"
    },
    {
      "attrId": 4,
      "attrName": "颜色",
      "attrValue": "黑色"
    }
  ]
}
PUT /product_db/_doc/6
{
  "id": "31",
  "name": "HLA海澜之家蓝灰花纹圆领针织布短袖T恤",
  "keywords": "海澜之家衣服",
  "subTitle": "HLA海澜之家短袖T恤",
  "price": "299",
  "promotionPrice": "199",
  "originalPrice": "299",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5ac98b64N70acd82f.jpg!cc_350x449.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":399,
  "putawayDate":"2021-04-06",
  "brandId": 50,
  "brandName": "海澜之家",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/99d3279f1029d32b929343b09d3c72de_222_222.jpg",
  "categoryId": 8,
  "categoryName": "T恤",
  "attrs": [
    {
      "attrId": 3,
      "attrName": "尺寸",
      "attrValue": "X"
    },
    {
      "attrId": 4,
      "attrName": "颜色",
      "attrValue": "蓝灰"
    }
  ]
}
PUT /product_db/_doc/7
{
  "id": "32",
  "name": "HLA海澜之家短袖T恤男基础款",
  "keywords": "海澜之家衣服",
  "subTitle": "HLA海澜之家短袖T恤",
  "price": "269",
  "promotionPrice": "169",
  "originalPrice": "399",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5a51eb88Na4797877.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":399,
  "putawayDate":"2021-04-07",
  "brandId": 50,
  "brandName": "海澜之家",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/99d3279f1029d32b929343b09d3c72de_222_222.jpg",
  "categoryId": 8,
  "categoryName": "T恤",
  "attrs": [
    {
      "attrId": 3,
      "attrName": "尺寸",
      "attrValue": "L"
    },
    {
      "attrId": 4,
      "attrName": "颜色",
      "attrValue": "蓝色"
    }
  ]
}
PUT /product_db/_doc/8
{
  "id": "33",
  "name": "小米（MI）小米电视4A ",
  "keywords": "小米电视机家用电器",
  "subTitle": "小米（MI）小米电视4A 55英寸 L55M5-AZ/L55M5-AD 2GB+8GB HDR 4K超高清 人工智能网络液晶平板电视",
  "price": "2269",
  "promotionPrice": "2169",
  "originalPrice": "2399",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5b02804dN66004d73.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":132,
  "putawayDate":"2021-04-09",
  "brandId": 6,
  "brandName": "小米",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/1e34aef2a409119018a4c6258e39ecfb_222_222.png",
  "categoryId": 35,
  "categoryName": "手机数码",
  "attrs": [
    {
      "attrId": 5,
      "attrName": "屏幕尺寸",
      "attrValue": "52"
    },
    {
      "attrId": 6,
      "attrName": "机身颜色",
      "attrValue": "黑色"
    }
  ]
}
PUT /product_db/_doc/9
{
  "id": "34",
  "name": "小米（MI）小米电视4A 65英寸",
  "keywords": "小米电视机家用电器",
  "subTitle": "小米（MI）小米电视4A 65英寸 L55M5-AZ/L55M5-AD 2GB+8GB HDR 4K超高清 人工智能网络液晶平板电视",
  "price": "3269",
  "promotionPrice": "3169",
  "originalPrice": "3399",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5b028530N51eee7d4.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":999,
  "putawayDate":"2021-04-10",
  "brandId": 6,
  "brandName": "小米",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/1e34aef2a409119018a4c6258e39ecfb_222_222.png",
  "categoryId": 35,
  "categoryName": "手机数码",
  "attrs": [
    {
      "attrId": 5,
      "attrName": "屏幕尺寸",
      "attrValue": "65"
    },
    {
      "attrId": 6,
      "attrName": "机身颜色",
      "attrValue": "金色"
    }
  ]
}
PUT /product_db/_doc/10
{
  "id": "35",
  "name": "耐克NIKE 男子 休闲鞋 ROSHE RUN 运动鞋 511881-010黑色41码",
  "keywords": "耐克运动鞋 鞋子",
  "subTitle": "耐克NIKE 男子 休闲鞋 ROSHE RUN 运动鞋 511881-010黑色41码",
  "price": "569",
  "promotionPrice": "369",
  "originalPrice": "899",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5b235bb9Nf606460b.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":399,
  "putawayDate":"2021-04-11",
  "brandId": 58,
  "brandName": "NIKE",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/timg (51).jpg",
  "categoryId": 29,
  "categoryName": "男鞋",
  "attrs": [
    {
      "attrId": 7,
      "attrName": "尺码",
      "attrValue": "42"
    },
    {
      "attrId": 8,
      "attrName": "颜色",
      "attrValue": "黑色"
    }
  ]
}
PUT /product_db/_doc/11
{
  "id": "36",
  "name": "耐克NIKE 男子 气垫 休闲鞋 AIR MAX 90 ESSENTIAL 运动鞋 AJ1285-101白色41码",
  "keywords": "耐克运动鞋 鞋子",
  "subTitle": "AIR MAX 90 ESSENTIAL 运动鞋 AJ1285-101白色",
  "price": "769",
  "promotionPrice": "469",
  "originalPrice": "999",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/5b19403eN9f0b3cb8.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":499,
  "putawayDate":"2021-04-13",
  "brandId": 58,
  "brandName": "NIKE",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/timg (51).jpg",
  "categoryId": 29,
  "categoryName": "男鞋",
  "attrs": [
    {
      "attrId": 7,
      "attrName": "尺码",
      "attrValue": "44"
    },
    {
      "attrId": 8,
      "attrName": "颜色",
      "attrValue": "白色"
    }
  ]
}
PUT /product_db/_doc/12
{
  "id": "37",
  "name": "(华为)HUAWEI MateBook X Pro 2019款 13.9英寸3K触控全面屏 轻薄笔记本",
  "keywords": "轻薄笔记本华为 笔记本电脑",
  "subTitle": "轻薄华为笔记本 电脑",
  "price": "4769",
  "promotionPrice": "4469",
  "originalPrice": "4999",
  "pic": "http://tuling-mall.oss-cn-shenzhen.aliyuncs.com/tulingmall/images/20200317/800_800_1555752016264mp.png",
  "sale": 999,
  "hasStock": true,
  "salecount":699,
  "putawayDate":"2021-04-14",
  "brandId": 3,
  "brandName": "华为",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/17f2dd9756d9d333bee8e60ce8c03e4c_222_222.jpg",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 9,
      "attrName": "容量",
      "attrValue": "16G"
    },
    {
      "attrId": 10,
      "attrName": "网络",
      "attrValue": "4G"
    }
  ]
}
PUT /product_db/_doc/13
{
  "id": "38",
  "name": "华为nova6se 手机 绮境森林 全网通（8G+128G)",
  "keywords": "轻薄笔记本华为 手机",
  "subTitle": "华为nova6se 手机",
  "price": "6769",
  "promotionPrice": "6469",
  "originalPrice": "6999",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/5ac1bf58Ndefaac16.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":899,
  "putawayDate":"2021-04-15",
  "brandId": 3,
  "brandName": "华为",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/17f2dd9756d9d333bee8e60ce8c03e4c_222_222.jpg",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 9,
      "attrName": "容量",
      "attrValue": "64G"
    },
    {
      "attrId": 10,
      "attrName": "网络",
      "attrValue": "5G"
    }
  ]
}
PUT /product_db/_doc/14
{
  "id": "39",
  "name": "iPhone7/6s/8钢化膜苹果8Plus全屏复盖抗蓝光防窥防偷看手机膜",
  "keywords": "手机膜",
  "subTitle": "iPhone7/6s/8钢化膜苹果8Plus全屏复盖抗蓝光防窥防偷看手机膜",
  "price": "29",
  "promotionPrice": "39",
  "originalPrice": "49",
  "pic": "http://tuling-mall.oss-cn-shenzhen.aliyuncs.com/tulingmall/images/20200311/6df99dab78bb2014.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":799,
  "putawayDate":"2021-04-16",
  "brandId": 51,
  "brandName": "苹果",
  "brandImg": "http://tuling-mall.oss-cn-shenzhen.aliyuncs.com/tulingmall/images/20200311/2b84746650fc122d67749a876c453619.png",
  "categoryId": 30,
  "categoryName": "手机配件",
  "attrs": [
    {
      "attrId": 11,
      "attrName": "手机膜-材料",
      "attrValue": "钢化"
    },
    {
      "attrId": 12,
      "attrName": "手机膜-颜色",
      "attrValue": "白色"
    }
  ]
}

PUT /product_db/_doc/15
{
  "id": "40",
  "name": "七匹狼短袖T恤男纯棉舒适春夏修身运动休闲短袖三条装 圆领3条装",
  "keywords": "七匹狼服装 衣服",
  "subTitle": "七匹狼短袖T恤男纯棉舒适春夏修身运动休闲短袖三条装 圆领3条装",
  "price": "129",
  "promotionPrice": "139",
  "originalPrice": "149",
  "pic": "http://tuling-mall.oss-cn-shenzhen.aliyuncs.com/tulingmall/images/20200311/19e846e727dff337.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":199,
  "putawayDate":"2021-04-20",
  "brandId": 49,
  "brandName": "七匹狼",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/18d8bc3eb13533fab466d702a0d3fd1f40345bcd.jpg",
  "categoryId": 8,
  "categoryName": "T恤",
  "attrs": [
    {
      "attrId": 3,
      "attrName": "尺寸",
      "attrValue": "M"
    },
    {
      "attrId": 4,
      "attrName": "颜色",
      "attrValue": "白色"
    }
  ]
}
PUT /product_db/_doc/16
{
  "id": "41",
  "name": "华为P40 Pro手机",
  "keywords": "华为手机",
  "subTitle": "华为P40 Pro手机",
  "price": "2129",
  "promotionPrice": "2139",
  "originalPrice": "2149",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/5ac1bf58Ndefaac16.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":199,
  "putawayDate":"2021-05-03",
  "brandId": 3,
  "brandName": "华为",
  "brandImg": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/17f2dd9756d9d333bee8e60ce8c03e4c_222_222.jpg",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 9,
      "attrName": "容量",
      "attrValue": "128G"
    },
    {
      "attrId": 10,
      "attrName": "网络",
      "attrValue": "5G"
    }
  ]
}
PUT /product_db/_doc/17
{
  "id": "42",
  "name": "朵唯智能手机 4G全网通 老人学生双卡双待手机",
  "keywords": "朵唯手机",
  "subTitle": "朵唯手机后置双摄，国产虎贲芯片！优化散热结构！浅薄机身！朵唯4月特惠！",
  "price": "3129",
  "promotionPrice": "3139",
  "originalPrice": "3249",
  "pic": "http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/xiaomi.jpg",
  "sale": 999,
  "hasStock": true,
  "salecount":1199,
  "putawayDate":"2021-06-01",
  "brandId": 59,
  "brandName": "朵唯",
  "brandImg": "http://tuling-mall.oss-cn-shenzhen.aliyuncs.com/tulingmall/images/20200311/2b84746650fc122d67749a876c453619.png",
  "categoryId": 19,
  "categoryName": "手机通讯",
  "attrs": [
    {
      "attrId": 9,
      "attrName": "容量",
      "attrValue": "32G"
    },
    {
      "attrId": 10,
      "attrName": "网络",
      "attrValue": "4G"
    }
  ]
}

创建dsl语句

POST /product_db/_doc/_search
{
  "from": 0,
  "size": 8,
  "query": {
    "bool": {
      "must": [
        {
          "match": {
            "name": {
              "query": "手机"   // 它就相当于搜索框
            }
          }
        }
      ],
      "filter": [
        {
          "term": {
            "hasStock": {
              "value": true   // 判断是否有货
            }
          }
        },
        {
          "range": {
            "price": {
              "from": "1",
              "to": "5000"    // 根据价格做区间
            }
          }
        }
      ]
    }
  },"sort": [
    {
      "salecount": {
        "order": "asc"    // 排序
      }
    }
  ],
  "aggregations": {
    "brand_agg": {
      "terms": {
        "field": "brandId",
        "size": 50
      },
      "aggregations": {
        "brand_name_agg": {
          "terms": {
            "field": "brandName"  // 做一个分组 这里是为了查找都有什么品牌
          }
        },
        "brand_img_agg": {
          "terms": {
            "field": "brandImg"   // 分组 为了上面查出品牌之后在把品牌的商标查出来
          }
        }
      }
    },
    "category_agg": {// 这也是分组 查什么根据field这个值找字段名看看数据是什么就懂了
      "terms": {
        "field": "categoryId",
        "size": 50,
        "min_doc_count": 1
      },
      "aggregations": {
        "category_name_agg": {
          "terms": {
            "field": "categoryName"
          }
        }
      }
    },
    "attr_agg": {
      "nested": {
        "path": "attrs"
      },
      "aggregations": {
        "attr_id_agg": {
          "terms": {
            "field": "attrs.attrId"
          },
          "aggregations": {
            "attr_name_agg": {
              "terms": {
                "field": "attrs.attrName"
              }
            },
            "attr_value_agg": {
              "terms": {
                "field": "attrs.attrValue"
              }
            }
          }
        }
      }
    }
  },
  "highlight": {   // 这里是高亮
    "pre_tags": [
      "<b style='color:red'>"
    ],
    "post_tags": [
      "</b>"
    ],
    "fields": {
      "name": {}
    }
  }
}
# elasticsearch # 大数据
Logo
华为云开发者联盟

为开发者提供学习成长、分享交流、生态实践、资源工具等服务，帮助开发者快速成长。

更多推荐

cover

Redis开源社区持续壮大，华为云为Valkey项目注入新的活力

avatar 华为云开发者联盟
cover

Python文本统计与分析：从基础到进阶

avatar 华为云开发者联盟
cover

教你用Perl实现Smgp协议

avatar 华为云开发者联盟