ElasticSearch（6）

Java代碼接入

java接入的方式有三種：

Node接入：java用nodeAPI的方式，以es中一個node節點接入項目。

比如一個es集羣有123三個節點，node接入的方式是指java把自己變成一個節點4，因爲自己變成了節點，自然可以訪問其他節點了。

當然這種方式不適合。自己變成一個節點，就會有分片等es操作，非常重量級。

Transport接入：藉助9300端口作爲控制層接入集羣

就是以一個Transport端口來連接es各個節點，併發送命令用來查詢。

http接入：restful的形式

只需要連接任何一個節點，發送http請求就可以了。

這裏只介紹rest形式：

加依賴：

        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-client</artifactId>
            <version>7.6.1</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>7.6.1</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>7.6.1</version>
        </dependency>

加配置，這裏需要注意的是，有三個節點，連接任何一個都可以

#聲明es服務地址
elasticsearch.ip=127.0.0.1:9200

配置類，用於與es連接

@Configuration
public class ElasticsearchRestClient {
    @Value("${elasticsearch.ip}")
    String ipAddress;

    @Bean(name = "highLevelClient")
    public RestHighLevelClient highLevelClient(){
        String[] address = ipAddress.split(":");
        String ip = address[0];
        int port = Integer.valueOf(address[1]);
        HttpHost httpHost = new HttpHost(ip , port , "http");
        return new RestHighLevelClient(RestClient.builder(new HttpHost[]{httpHost}));
    }
}

業務代碼，這裏只寫實現方法：

@Override
    public List<ShopModel> searchES(BigDecimal longitude, BigDecimal latitude, String keyword, Integer orderby, Integer categoryId, String tags) throws IOException {

        SearchRequest searchRequest = new SearchRequest("shop");
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        searchSourceBuilder.query(QueryBuilders.matchQuery("name",keyword));
        searchSourceBuilder.timeout(new TimeValue(60 , TimeUnit.SECONDS));
        searchRequest.source(searchSourceBuilder);

        List<Integer> shopIdsList = new ArrayList<>();

        SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
        SearchHit[] hits = searchResponse.getHits().getHits();
        for (SearchHit hit : hits){
            shopIdsList.add(new Integer(hit.getSourceAsMap().get("id").toString()));
        }

        List<ShopModel> shopModelList = shopIdsList.stream().map(id -> {
            return get(id);
        }).collect(Collectors.toList());
        return shopModelList;
    }

通過調用RestHighLevelClient的search方法，將searchRequest傳入，searchRequest中配SearchSourceBuilder，SearchSourceBuilder中配數據參數。查出以後再根據id查數據庫，拿到完整數據。

當然，這樣的搜索只是最簡單的匹配，沒有加任何條件，接下來需要添加些條件的話，用highLevelClient就辦不到了，我們可以傳json字符串，然後整體傳輸來實現：

@Override
    public List<ShopModel> searchES2(BigDecimal longitude, BigDecimal latitude, String keyword, Integer orderby, Integer categoryId, String tags) throws IOException {
        SearchRequest searchRequest = new SearchRequest("shop");
        List<ShopModel> shopModelList = new ArrayList<>();
        Request request = new Request("GET" , "/shop/_search");
        String reqJson = "{\n" +
                "  \"_source\": \"*\", \n" +
                "  \"script_fields\": {\n" +
                "    \"distance\": {\n" +
                "      \"script\": {\n" +
                "        \"source\": \"haversin(lat,lon,doc['location'].lat,doc['location'].lon)\",\n" +
                "        \"lang\": \"expression\",\n" +
                "        \"params\": {\n" +
                "          \"lat\":" + latitude.toString() + ",\n" +
                "          \"lon\":" + longitude.toString() + "\n" +
                "        }\n" +
                "      }\n" +
                "    }\n" +
                "  },\n" +
                "  \"query\": {\n" +
                "    \"function_score\": {\n" +
                "      \"query\": {\n" +
                "        \"bool\": {\n" +
                "          \"must\": [\n" +
                "            {\"match\": {\"name\": {\"query\": \"" + keyword + "\",\"boost\": 0.1}}},\n" +
                "            {\"term\": {\"seller_disabled_flag\": 0}}\n" +
                "          ]\n" +
                "        }\n" +
                "      },\n" +
                "      \"functions\": [\n" +
                "        {\n" +
                "          \"gauss\":{\n" +
                "            \"location\":{\n" +
                "              \"origin\":\"" + latitude.toString() + "," + longitude.toString() + "\",\n" +
                "              \"scale\":\"100km\",\n" +
                "              \"offset\":\"0km\",\n" +
                "              \"decay\":0.5\n" +
                "            }\n" +
                "          },\n" +
                "          \"weight\": 9\n" +
                "        },\n" +
                "        {\n" +
                "          \"field_value_factor\": {\n" +
                "            \"field\": \"remark_score\"\n" +
                "          },\n" +
                "          \"weight\": 0.2\n" +
                "        },\n" +
                "        {\n" +
                "          \"field_value_factor\": {\n" +
                "            \"field\": \"seller_remark_score\"\n" +
                "          },\n" +
                "          \"weight\": 0.1\n" +
                "        }\n" +
                "      ],\n" +
                "      \"score_mode\": \"sum\",\n" +
                "      \"boost_mode\": \"sum\"\n" +
                "    }\n" +
                "  }\n" +
                "}";
        System.out.println(reqJson);
        request.setJsonEntity(reqJson);
        Response response = restHighLevelClient.getLowLevelClient().performRequest(request);
        String responseStr = EntityUtils.toString(response.getEntity());
        System.out.println(responseStr);
        JSONObject jsonObject = JSONObject.parseObject(responseStr);
        JSONArray jsonArray = jsonObject.getJSONObject("hits").getJSONArray("hits");
        for (int i = 0 ; i < jsonArray.size() ; i ++){
            JSONObject jsonObj = jsonArray.getJSONObject(i);
            Integer id = new Integer(jsonObj.get("_id").toString());
            BigDecimal distance = new BigDecimal(jsonObj.getJSONObject("fields").getJSONArray("distance").get(0).toString());
            ShopModel shopModel = get(id);
            shopModel.setDistance(distance.multiply(new BigDecimal(1000).setScale(0 , BigDecimal.ROUND_CEILING)).intValue());
            shopModelList.add(shopModel);
        }

        return shopModelList;
    }

需要注意的是，這裏的request和response都是es中的，使用es類底層的傳輸來進行數據查詢。

這樣的查詢比較死板，如果想調整也非常麻煩，所以可以用object字符串拼接，先上代碼：

    @Override
    public Map<String, Object> searchES3(BigDecimal longitude, BigDecimal latitude, String keyword, Integer orderby, Integer categoryId, String tags) throws IOException {
        Map<String, Object> result = new HashMap<>();
        Request request = new Request("GET","/shop/_search");
        //構建請求
        JSONObject jsonRequestObj = new JSONObject();
        //構建source部分
        jsonRequestObj.put("_source","*");
        //構建自定義距離字段
        jsonRequestObj.put("script_fields",new JSONObject());
        jsonRequestObj.getJSONObject("script_fields").put("distance",new JSONObject());
        jsonRequestObj.getJSONObject("script_fields").getJSONObject("distance").put("script",new JSONObject());
        jsonRequestObj.getJSONObject("script_fields").getJSONObject("distance").getJSONObject("script")
                .put("source","haversin(lat, lon, doc['location'].lat, doc['location'].lon)");
        jsonRequestObj.getJSONObject("script_fields").getJSONObject("distance").getJSONObject("script")
                .put("lang","expression");
        jsonRequestObj.getJSONObject("script_fields").getJSONObject("distance").getJSONObject("script")
                .put("params",new JSONObject());
        jsonRequestObj.getJSONObject("script_fields").getJSONObject("distance").getJSONObject("script")
                .getJSONObject("params").put("lat",latitude);
        jsonRequestObj.getJSONObject("script_fields").getJSONObject("distance").getJSONObject("script")
                .getJSONObject("params").put("lon",longitude);
        //構建query
        Map<String,Object> cixingMap = analyzeCategoryKeyword(keyword);
        boolean isAffectFilter = false;
        boolean isAffectOrder =  true;
        jsonRequestObj.put("query",new JSONObject());
        //構建function score
        jsonRequestObj.getJSONObject("query").put("function_score",new JSONObject());
        //構建function score內的query
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").put("query",new JSONObject());
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").put("bool",new JSONObject());
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool").put("must",new JSONArray());
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                .getJSONArray("must").add(new JSONObject());
        //構建match query
        int queryIndex = 0;
        if(cixingMap.keySet().size() > 0 && isAffectFilter){
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).put("bool",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").put("should", new JSONArray());
            int filterQueryIndex = 0;
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                    .put("match",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                    .getJSONObject("match").put("name",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                    .getJSONObject("match").getJSONObject("name").put("query",keyword);
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                    .getJSONObject("match").getJSONObject("name").put("boost",0.1);
            for(String key : cixingMap.keySet()) {
                filterQueryIndex++;
                Integer cixingCategoryId = (Integer) cixingMap.get(key);
                jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                        .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").add(new JSONObject());
                jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                        .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                        .put("term", new JSONObject());
                jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                        .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                        .getJSONObject("term").put("category_id", new JSONObject());
                jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                        .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                        .getJSONObject("term").getJSONObject("category_id").put("value", cixingCategoryId);
                jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                        .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("bool").getJSONArray("should").getJSONObject(filterQueryIndex)
                        .getJSONObject("term").getJSONObject("category_id").put("boost", 0);
            }
        }else{
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).put("match",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("match").put("name", new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("match").getJSONObject("name").put("query",keyword);
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("match").getJSONObject("name").put("boost",0.1);

        }
        queryIndex++;
        //構建第二個query的條件
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                .getJSONArray("must").add(new JSONObject());
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                .getJSONArray("must").getJSONObject(queryIndex).put("term",new JSONObject());
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("term").put("seller_disabled_flag",0);
        if(tags != null){
            queryIndex++;
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).put("term",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("term").put("tags",tags);
        }
        if(categoryId != null){
            queryIndex++;
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).put("term",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONObject("query").getJSONObject("bool")
                    .getJSONArray("must").getJSONObject(queryIndex).getJSONObject("term").put("category_id",categoryId);
        }
        //構建functions部分
        jsonRequestObj.getJSONObject("query").getJSONObject("function_score").put("functions",new JSONArray());
        int functionIndex = 0;
        if(orderby == null) {
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("gauss", new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("gauss").put("location", new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("gauss")
                    .getJSONObject("location").put("origin", latitude.toString() + "," + longitude.toString());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("gauss")
                    .getJSONObject("location").put("scale", "100km");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("gauss")
                    .getJSONObject("location").put("offset", "0km");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("gauss")
                    .getJSONObject("location").put("decay", "0.5");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("weight", 9);
            functionIndex++;
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("field_value_factor", new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("field_value_factor")
                    .put("field", "remark_score");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("weight", 0.2);
            functionIndex++;
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("field_value_factor", new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("field_value_factor")
                    .put("field", "seller_remark_score");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("weight", 0.1);
            if(cixingMap.keySet().size() > 0 && isAffectOrder){
                for(String key : cixingMap.keySet()){
                    functionIndex++;
                    jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").add(new JSONObject());
                    jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("filter",new JSONObject());
                    jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("filter")
                            .put("term",new JSONObject());
                    jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("filter")
                            .getJSONObject("term").put("category_id",cixingMap.get(key));
                    jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("weight",3);
                }
            }
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").put("score_mode","sum");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").put("boost_mode","sum");
        }else{
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").add(new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).put("field_value_factor",new JSONObject());
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").getJSONArray("functions").getJSONObject(functionIndex).getJSONObject("field_value_factor")
                    .put("field","price_per_man");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").put("score_mode","sum");
            jsonRequestObj.getJSONObject("query").getJSONObject("function_score").put("boost_mode","replace");
        }
        //排序字段
        jsonRequestObj.put("sort",new JSONArray());
        jsonRequestObj.getJSONArray("sort").add(new JSONObject());
        jsonRequestObj.getJSONArray("sort").getJSONObject(0).put("_score",new JSONObject());
        if(orderby == null){
            jsonRequestObj.getJSONArray("sort").getJSONObject(0).getJSONObject("_score").put("order","desc");
        }else{
            jsonRequestObj.getJSONArray("sort").getJSONObject(0).getJSONObject("_score").put("order","asc");
        }
        //聚合字段
        jsonRequestObj.put("aggs",new JSONObject());
        jsonRequestObj.getJSONObject("aggs").put("group_by_tags",new JSONObject());
        jsonRequestObj.getJSONObject("aggs").getJSONObject("group_by_tags").put("terms",new JSONObject());
        jsonRequestObj.getJSONObject("aggs").getJSONObject("group_by_tags").getJSONObject("terms").put("field","tags");
        String reqJson = jsonRequestObj.toJSONString();
        System.out.println(reqJson);
        request.setJsonEntity(reqJson);
        Response response = restHighLevelClient.getLowLevelClient().performRequest(request);
        String responseStr = EntityUtils.toString(response.getEntity());
        System.out.println(responseStr);
        JSONObject jsonObject = JSONObject.parseObject(responseStr);
        JSONArray jsonArr = jsonObject.getJSONObject("hits").getJSONArray("hits");
        List<ShopModel> shopModelList = new ArrayList<>();
        for(int i = 0; i < jsonArr.size(); i++){
            JSONObject jsonObj = jsonArr.getJSONObject(i);
            Integer id = new Integer(jsonObj.get("_id").toString());
            BigDecimal distance = new BigDecimal(jsonObj.getJSONObject("fields").getJSONArray("distance").get(0).toString());
            ShopModel shopModel = get(id);
            shopModel.setDistance(distance.multiply(new BigDecimal(1000).setScale(0,BigDecimal.ROUND_CEILING)).intValue());
            shopModelList.add(shopModel);
        }
        List<Map> tagsList = new ArrayList<>();
        JSONArray tagsJsonArray = jsonObject.getJSONObject("aggregations").getJSONObject("group_by_tags").getJSONArray("buckets");
        for(int i = 0; i < tagsJsonArray.size();i++){
            JSONObject jsonObj = tagsJsonArray.getJSONObject(i);
            Map<String,Object> tagMap = new HashMap<>();
            tagMap.put("tags",jsonObj.getString("key"));
            tagMap.put("num",jsonObj.getInteger("doc_count"));
            tagsList.add(tagMap);
        }
        result.put("tags",tagsList);

        result.put("shop",shopModelList);
        return result;
    }

    //構造分詞函數識別器
    private Map<String,Object> analyzeCategoryKeyword(String keyword) throws IOException {
        Map<String,Object> res = new HashMap<>();

        Request request = new Request("GET","/shop/_analyze");
        request.setJsonEntity("{" + "  \"field\": \"name\"," + "  \"text\":\""+keyword+"\"\n" + "}");
        Response response = restHighLevelClient.getLowLevelClient().performRequest(request);
        String responseStr = EntityUtils.toString(response.getEntity());
        JSONObject jsonObject = JSONObject.parseObject(responseStr);
        JSONArray jsonArray = jsonObject.getJSONArray("tokens");
        for(int i = 0; i < jsonArray.size(); i++){
            String token = jsonArray.getJSONObject(i).getString("token");
            Integer categoryId = getCategoryIdByToken(token);
            if(categoryId != null){
                res.put(token,categoryId);
            }
        }
        return res;
    }

    private Map<Integer,List<String>> categoryWorkMap = new HashMap<>();

    private Integer getCategoryIdByToken(String token){
        for(Integer key : categoryWorkMap.keySet()){
            List<String> tokenList = categoryWorkMap.get(key);
            if(tokenList.contains(token)){
                return key;
            }
        }
        return null;
    }

可以看出，相當之麻煩，但跟上面的相比，更加靈活，這裏主要參考mybatis拼接sql。es的json語句爲：

GET /shop/_search
{
  "_source": "*", 
  "script_fields": {
    "distance": {
      "script": {
        "source": "haversin(lat,lon,doc['location'].lat,doc['location'].lon)",
        "lang": "expression",
        "params": {
          "lat":31.306171,
          "lon":121.525841
        }
      }
    }
  },
  "query": {
    "function_score": {
      "query": {
        "bool": {
          "must": [
            {"match": {"name": {"query": "凱悅","boost": 0.1}}},
            {"term": {"seller_disabled_flag": 0}},
            {"term": {"tags": "落地大窗"}}
          ]
        }
      },
      "functions": [
        {
          "gauss":{
            "location":{
              "origin":"31.306171,121.525841",
              "scale":"100km",
              "offset":"0km",
              "decay":0.5
            }
          },
          "weight": 9
        },
        {
          "field_value_factor": {
            "field": "remark_score"
          },
          "weight": 0.2
        },
        {
          "field_value_factor": {
            "field": "seller_remark_score"
          },
          "weight": 0.1
        }
      ],
      "score_mode": "sum",
      "boost_mode": "sum"
    }
  },
  "sort": [
    {
      "_score": {
        "order": "desc"
      }
    }
  ],
  "aggs": {
    "group_by_tags": {
      "terms": {
        "field": "tags"
      }
    }
  }
}

結果中aggs的結果：會把tags作爲一個統計傳出來。

雖然麻煩，但是還是可以滿足大多數的情況了。