elasticsearch score 得分 自定义

{
  "from": 0,
  "size": "100",
  "min_score": 1,
  "query": {
    "function_score": {
      "filter": {
        "bool": {
          "should": {
            "multi_match": {
              "query": "bmw",
              "fields": [
                "name",
                "host"
              ]
            }
          }
        }
      },
      "functions": [
        {
          "filter": {
            "match": {
              "name": {
                "query": " bmw",
                "minimum_should_match": "100%"
              }
            }
          },
          "weight": "4"
        },
        {
          "filter": {
            "match": {
              "host": "bmw"
            }
          },
          "weight": "10"
        },
        {
          "script_score": {
            "script": "width=doc['rank'].value;if(width==0){return -4};return 0"
          }
        }
      ],
      "score_mode": "sum"
    }
  },
  "sort": [
    {
      "_score": {
        "order": "desc"
      }
    }
  ]
}

备注
function_score  自定义 score 得分使用 函数

min_score 最小score 的值, 显示大于当前score 的值

score_mode score 得分计算方式 ; 

script_score script 的作用 ，如果 rank 字段的值等于 0 该记录的score 得分 = score得分 - 4; 比如 原来 得分 10 现在的得分是6 

sort 按照 score 得分进行排序