Elasticsearch入门实战

下载安装ES

1.官网下载地址：https://www.elastic.co/downloads/elasticsearch 目前最新本6.0 windows上面直接选择zip压缩包 注意：要求jdk1.8
2.安装
解压缩下载下来的包-进入bin目录-运行elasticsearch.bat文件 http://127.0.0.1:9200/ 访问成功表示elasticsearch安装成功

java连接ES

1.添加依赖

            org.elasticsearch.client
            transport
            5.6.3



            org.elasticsearch
            elasticsearch
            5.6.3

2.java code

@Test

public voidtest1() {

try{
//集群名称可以在配置文件设置
Settings settings =Settings.builder().put("cluster.name","my-application").build();

TransportClient client =newPreBuiltTransportClient(settings)

.addTransportAddress(newInetSocketTransportAddress(InetAddress.getByName("localhost"),9300));

IndexResponse response = client.prepareIndex("item","itemList","830972")

.setSource(jsonBuilder()

.startObject()

.field("productId","830972")

.field("salePrice","254")

.field("productName","254")

.field("sub_title","524")

.field("productImageBig","252")

.field("category_name","2542")

.endObject()

).get();

//查询

GetResponse getResponse = client.prepareGet("item","itemList","830972").get();

String json = getResponse.getSourceAsString();

System.out.println(json);

client.close();

}catch(Exception e) {

e.printStackTrace();

}

}

head可视化插件安装

说明：es 6.0版本不支持命令行直接安装，需要依赖node环境(可自行百度安装)
1.安装grunt

npm install -g grunt --registry=https://registry.npm.taobao.org

2.通过git下载elasticsearch-head源码

yum install –y git
git clone https://github.com/mobz/elasticsearch-head.git

3.修改head源码，默认是localhost，本地机器不用修改。head/Gruntfile.js

connect: {
    server: {
        options: {
            port: 9100,
            hostname: '*',
            base: '.',
            keepalive: true
        }
    }
}

4.head插件连接地址head/_site/app.js

this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://localhost:9200";

5.修改es配置文件

#增加新的参数，这样head插件可以访问es
http.cors.enabled: true
http.cors.allow-origin: "*"

6.正常其启动elasticsearch
7.进入elasticsearch-head根目录，执行npm install

npm install

8.完成后启动elasticsearch-head，在源码根目录执行

grunt server

image.png

访问： http://localhost:9100 就可以访问head插件