Elasticsearch 简单搜索查询案例

1.MySql表结构/数据

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for user_lables
-- ----------------------------
DROP TABLE IF EXISTS `user_lables`;
CREATE TABLE `user_lables` (
  `id` varchar(255) DEFAULT NULL COMMENT '用户唯一标识',
  `age` varchar(255) DEFAULT NULL COMMENT '用户年龄',
  `sex` varchar(255) DEFAULT NULL COMMENT '用户性别 1:男,2:女',
  `tel` varchar(255) DEFAULT NULL COMMENT '联系电话',
  `is_high` varchar(255) DEFAULT NULL COMMENT '高价值用户 0:否,1:是',
  `final_by` varchar(255) DEFAULT NULL COMMENT '最后下单时间'
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;

-- ----------------------------
-- Records of user_lables
-- ----------------------------
INSERT INTO `user_lables` VALUES ('10001', '23', '1', '130xxxx1111', '1', '2022-09-11 22:10:12');
INSERT INTO `user_lables` VALUES ('10002', '33', '1', '157xxxx4506', '0', '2023-06-13 12:09:11');
INSERT INTO `user_lables` VALUES ('10003', '24', '2', '157xxxx4309', '1', '2023-07-15 22:19:21');
INSERT INTO `user_lables` VALUES ('10004', '16', '1', '151xxxx5516', '1', '2023-06-29 12:29:31');
INSERT INTO `user_lables` VALUES ('10005', '18', '1', '152xxxx4506', '1', '2023-07-17 17:39:41');
INSERT INTO `user_lables` VALUES ('10006', '19', '2', '153xxxx4506', '0', '2023-07-18 19:49:51');
INSERT INTO `user_lables` VALUES ('10007', '20', '2', '157xxxx4506', '1', '2023-07-18 23:59:11');
INSERT INTO `user_lables` VALUES ('10008', '23', '1', '189xxxx4506', '0', '2023-06-14 16:39:51');
INSERT INTO `user_lables` VALUES ('10009', '36', '2', '137xxxx4506', '1', '2023-06-15 13:29:41');
INSERT INTO `user_lables` VALUES ('10010', '45', '2', '130xxxx4506', '1', '2023-06-29 09:19:31');
INSERT INTO `user_lables` VALUES ('10011', '30', '1', '157xxxx4506', '1', '2023-07-14 21:09:21');
INSERT INTO `user_lables` VALUES ('10012', '33', '2', '157xxxx4506', '0', '2023-07-13 22:29:11');
INSERT INTO `user_lables` VALUES ('10013', '29', '2', '157xxxx4516', '0', '2023-07-13 23:23:21');
INSERT INTO `user_lables` VALUES ('10014', '28', '1', '157xxxx5516', '0', '2023-07-13 23:22:21');

2.Java 实体类

2.1 user_lables表实体

public class User_lables {
    private String id;
    private String age;
    private String sex;
    private String tel;
    private String is_high;
    private String final_by;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getTel() {
        return tel;
    }

    public void setTel(String tel) {
        this.tel = tel;
    }

    public String getIs_high() {
        return is_high;
    }

    public void setIs_high(String is_high) {
        this.is_high = is_high;
    }

    public String getFinal_by() {
        return final_by;
    }

    public void setFinal_by(String final_by) {
        this.final_by = final_by;
    }

    public User_lables(String id, String age, String sex, String tel, String is_high, String final_by) {
        this.id = id;
        this.age = age;
        this.sex = sex;
        this.tel = tel;
        this.is_high = is_high;
        this.final_by = final_by;
    }

    public User_lables() {

    }

    @Override
    public String toString() {
        return "User_lables{" +
                "id='" + id + '\'' +
                ", age='" + age + '\'' +
                ", sex='" + sex + '\'' +
                ", tel='" + tel + '\'' +
                ", is_high='" + is_high + '\'' +
                ", final_by='" + final_by + '\'' +
                '}';
    }

2.2 查询参数实体

public class Es_bean {
    private String name;
    private String type;
    private String value;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

3.整体代码

package com.jinshan.datacenter.estest;

/**
 * @author MR.Liu
 * @version 1.0
 * @data 2023-07-20 11:19
 */
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.google.gson.Gson;
import com.jinshan.datacenter.es.Es_bean;
import com.jinshan.datacenter.es.User_lables;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.http.HttpHost;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.RangeQueryBuilder;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.builder.SearchSourceBuilder;

import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class MySQLDemo {

    // MySQL 8.0 以下版本 - JDBC 驱动名及数据库 URL
    static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    static final String DB_URL = "jdbc:mysql://localhost:3306/test";

    // MySQL 8.0 以上版本 - JDBC 驱动名及数据库 URL
    //static final String JDBC_DRIVER = "com.mysql.cj.jdbc.Driver";
    //static final String DB_URL = "jdbc:mysql://localhost:3306/RUNOOB?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC";


    // 数据库的用户名与密码，需要根据自己的设置
    static final String USER = "root";
    static final String PASS = "000000";

    public static Connection GetConn(){
        Connection conn = null;

        try{
            // 注册 JDBC 驱动
            Class.forName(JDBC_DRIVER);

            // 打开链接
            System.out.println("连接数据库...");
            conn = DriverManager.getConnection(DB_URL,USER,PASS);

            // 执行查询
            System.out.println(" 实例化Statement对象...");

        }catch(SQLException se){
            // 处理 JDBC 错误
            se.printStackTrace();
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }

        return conn;
    }

    public static void InsertDoc(RestHighLevelClient client, String indexName , List list) throws IOException {
        // 批量导入数据
        BulkRequest request = new BulkRequest();
        // 添加索引请求到批量请求中
        for (int i =0;i bh =new BeanListHandler(User_lables.class);
        //rs是ResultSet得到的从返回集合
        List handle = bh.handle(rs);

        //InsertDoc(client,"user_test1",handle);

        String data = "{\n" +
                "  \"selectedTags\": [\n" +
                "    {\n" +
                "      \"effect\": \"user\",\n" +
                "      \"label\": \"男性\",\n" +
                "      \"name\": \"sex\",\n" +
                "      \"value\": \"1\",\n" +
                "      \"type\": \"match\"\n" +
                "    },\n" +
                "    {\n" +
                "      \"effect\": \"user\",\n" +
                "      \"label\": \"10~50\",\n" +
                "      \"name\": \"age\",\n" +
                "      \"value\": \"20-30\",\n" +
                "      \"type\": \"rangeBoth\"\n" +
                "    },\n" +
                "    {\n" +
                "      \"effect\": \"user\",\n" +
                "      \"label\": \"高质量用户\",\n" +
                "      \"name\": \"is_high\",\n" +
                "      \"value\": \"0\",\n" +
                "      \"type\": \"match\"\n" +
                "    }\n" +
                "  ]\n" +
                "}";

        JSONObject object = JSON.parseObject(data);
        JSONArray array = object.getJSONArray("selectedTags");
        List list = array.toJavaList(Es_bean.class);

        SearchRequest request = new SearchRequest();
        request.indices("user_test1");
        request.types("_doc");
        SearchSourceBuilder builder = new SearchSourceBuilder();
        request.source(builder);
        String[] includes = {"id", "age","sex","tel","is_high","final_by"};
        builder.fetchSource(includes, null);
        builder.from(0);
        builder.size(1000);
        BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();


        for (int i=0;i memberTags = new ArrayList<>();
        try {
            SearchResponse search = client.search(request, options);
            SearchHits hits = search.getHits();
            Iterator iterator = hits.iterator();
            while (iterator.hasNext()) {
                SearchHit hit = iterator.next();
                String sourceAsString = hit.getSourceAsString();
                User_lables memberTag = JSON.parseObject(sourceAsString, User_lables.class);
                System.out.println(memberTag);
                memberTags.add(memberTag);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        conn.close();
        client.close();
    }
}