在这里插入图片描述

前言

本节实现高级查询中的全量查询

实现

之前的批量插入做一点修改，ESTest_Doc_Insert_Batch.java

package com.zwy.es;

import com.fasterxml.jackson.databind.ObjectMapper;
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.index.IndexResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.xcontent.XContentType;

import java.io.IOException;

public class ESTest_Doc_Insert_Batch {
    public static void main(String[] args) throws IOException {

        //
        RestHighLevelClient esClient = new RestHighLevelClient(
                RestClient.builder(new HttpHost("localhost", 9200, "http"))
        );

        // 批量插入数据
        BulkRequest request = new BulkRequest();

        // 定义数据，添加入request
        request.add(new IndexRequest().index("users").id("1001").source(XContentType.JSON, "name", "张三", "age", 30, "sex", "男"));
        request.add(new IndexRequest().index("users").id("1002").source(XContentType.JSON, "name", "李四", "age", 30, "sex", "女"));
        request.add(new IndexRequest().index("users").id("1003").source(XContentType.JSON, "name", "王五", "age", 40, "sex", "男"));
        request.add(new IndexRequest().index("users").id("1004").source(XContentType.JSON, "name", "王五1", "age", 30, "sex", "女"));
        request.add(new IndexRequest().index("users").id("1005").source(XContentType.JSON, "name", "王五2", "age", 50, "sex", "男"));
        request.add(new IndexRequest().index("users").id("1003").source(XContentType.JSON, "name", "王五3", "age", 50, "sex", "男"));

        BulkResponse response = esClient.bulk(request, RequestOptions.DEFAULT);
        System.out.println(response.getTook());
        System.out.println(response.getItems());


        // 关闭ES客户端
        esClient.close();

    }
}

ESTest_Doc_Query.java

package com.zwy.es;

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.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.builder.SearchSourceBuilder;

import java.io.IOException;

public class ESTest_Doc_Query {
    public static void main(String[] args) throws IOException {

        //
        RestHighLevelClient esClient = new RestHighLevelClient(
                RestClient.builder(new HttpHost("localhost", 9200, "http"))
        );

        // 查询数据
        SearchRequest request = new SearchRequest();
        request.indices("users");

        request.source(new SearchSourceBuilder().query(QueryBuilders.matchAllQuery()));

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();

        System.out.println(hits.getTotalHits());  // 打印
        System.out.println(response.getTook());  // 打印

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }

        // 关闭ES客户端
        esClient.close();

    }
}