Elasticsearch简单使用系列--使用Rest API进行CRUD操作

一,es简介

Elasticsearch is a distributed, RESTful search and analytics engine capable of solving a growing number of use cases. (简单说:es是用来解决增量数据的一个分布式,使用Restful搜索和分析的引擎.)

二,es资料

官网:https://www.elastic.co/products/elasticsearch
ES中文指南: https://kibana.logstash.es/content/

三,使用Rest API简单CRUD实例

*ps:实例使用了https://my.oschina.net/liuchangng/blog/967788中的工具类,OkHttpUtil

import com.google.common.collect.Maps;
import com.lcj.okhttp.OkHttpUtil;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import org.apache.commons.lang3.time.DateFormatUtils;

import java.util.Date;
import java.util.Map;

/**
 * @author lcj
 * @version 1.0
 * @description 简单的使用rest api操作es
 * @Create 2017-06-21
 */
public class EsRestApi {

    /**
     * 创建索引文档
     */
    private static void createDocument(){
        //http://192.168.0.128:9200/index/type/id
        //method : put

        String url = "http://192.168.0.128:9200/book/book/14";

        Map<String,Object> book = Maps.newHashMap();
        book.put("name","使用okhttp的put方式增加index");
        book.put("author","lcj3");
        book.put("price",50.23);
        book.put("publishTime", DateFormatUtils.format(new Date(),"yyyy-MM-dd HH:mm:ss"));

        String result = OkHttpUtil.postOrPutOrDelete(url,book,null,OkHttpUtil.OkHttpMethod.PUT);

        System.out.println(result);

    }

    /**
     * 查询文档
     */
    private static void getDocument(){
        String url = "http://192.168.0.128:9200/book/book/14";
        String result = OkHttpUtil.get(url,null,null);
        System.out.println(result);
    }

    /**
     * 更新文档
     */
    private static void updateDocument(){
        String url = "http://192.168.0.128:9200/book/book/14";

        Map<String,Object> book = Maps.newHashMap();
        book.put("author","lcj3");
        book.put("price",5340.23);

        String result = OkHttpUtil.postOrPutOrDelete(url,book,null,OkHttpUtil.OkHttpMethod.PUT);

        System.out.println(result);

    }

    /**
     * 删除文档
     */
    private static void daleteDocument(){
        String url = "http://192.168.0.128:9200/book/book/14";

        String result = OkHttpUtil.postOrPutOrDelete(url,null,null,OkHttpUtil.OkHttpMethod.DELETE);

        System.out.println(result);

    }

    public static void main(String[] args) {
        //创建索引文档
        //createDocument();

        //查询文档
        //getDocument();

        //更新文档
        //updateDocument();

        //删除文档
        daleteDocument();
    }
}

四,接下来还有java api篇...