1,课程回顾
2,本章重点
3,具体内容
3.1 kibana的简介和使用
简介:
Kibana 是通向 Elastic 产品集的窗口。 它可以在 Elasticsearch 中对数据进行视觉探索和实时分析。 Kibana是一个针对Elasticsearch的开源分析及可视化平台,用来搜索,查看,用来交互存储在Elasticsearch索引中的数据。使用Kibana,可以通过各种图表进行高级数据分析及展示。
解压配置:
下载上传文件到虚拟机
解压:
tar -xzvf kibana-6.4.0-linux-x86_64.tar.gz -C /usr/
改名:
mv /usr/kibana-6.4.0-linux-x86_64/ /usr/kibana
配置环境变量:
vim /etc/profile
source /etc/profile
修改配置:
cd /usr/kibana
vim config/kibana.yml
:2 端口号 :7 主机IP :28 es url地址
启动访问(不兼容360浏览器):
kibana (配置过环境变量,非守护运行) ctrl+c 直接关闭
kibana & (守护方式运行) 关闭麻烦点
ps -ef |grep kibana 查找进程
kill -9 xxxx 杀死进程
启动完毕,显示:
server running at http://192.168.23.211:5601
3.2 创建,修改和删除索引及数据的增删改查:
数据类型
核心类型(Core datatype)
字符串:string,string类型包含 text 和 keyword。
text:该类型被用来索引长文本,在创建索引前会将这些文本进行分词,转化为词的组合,建立 索引;允许es来检索这些词,text类型不能用来排序和聚合。例如电子邮件主体部分或者一款产品的介绍
keyword:该类型不需要进行分词,可以被用来检索过滤、排序和聚合, 可以满足电子邮箱地址、主机名、状态码、邮政编码和标签等数据的要求。
数值型:long、integer、short、byte、double、float
日期型:date
布尔型:boolean
二进制型:binary
https://www.elastic.co/guide/cn/elasticsearch/guide/current/index.html
索引的管理:
创建索引的语法
PUT /my_index
{
“settings”: { … any settings … },
“mappings”: {
“type_one”: { … any mappings … },
“type_two”: { … any mappings … },//6.0之前的版本可以
…
}
}
mappings: 映射(Mapping) 相当于数据表的表结构
number_of_shards:每个索引的主分片数,这个配置在索引创建后不能修改。默认值为5
number_of_replicas:每个主分片的副本数,默认值是 1 。对于活动的索引库,这个配置可以随时修改。
创建索引的示例
PUT /index_hr
{
"settings":{
"number_of_shards":3,
"number_of_replicas":1
},
"mappings":{
"emp_type":{
"properties":{
"empno":{
"type":"integer"
},
"ename":{
"type":"keyword"
},
"job":{
"type":"keyword"
},
"salary":{
"type":"double"
},
"deptno":{
"type":"integer"
},
"hiredate":{
"type":"date"
}
}
}
}
}
成功返回:
{"acknowledged":true,"shards_acknowledged":true,"index":"my_index"}
GET _all/ 查看所有索引
GET _all/_settings 查看索引配置
创建索引时如果503(master_not_discovered_exception)
删除集群各节点下的data下的数据
rm -rf /usr/elasticsearch/data/*
重启集群
2、修改索引
PUT /my_index/_settings
{
"number_of_replicas": 1
}
{"acknowledged":true}
3、删除索引
DELETE /my_index //删除单个索引
DELETE /index_one,index_two //删除多个索引
DELETE /index_* //删除以index_开头的索引
DELETE /_all //删除所有索引
{"acknowledged":true}
可以设置下面的属性,使DELETE /_all 失效,必须指定索引名称,才可以删除。
elasticsearch.yml
action.destructive_requires_name: true
数据管理:
1,插入数据
指定ID插入:
post 192.168.23.30:9200/my_index/my_doc/1
{
“my_field”:“aaa”
}
返回:
{"_index":"my_index","_type":"my_type","_id":"1","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":0,"_primary_term":1}
不指定ID插入:
返回:
{"_index":"my_index","_type":"my_type","_id":"s40HiGwBg5JLnGO8RVwg","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":1,"_primary_term":1}
2,查询数据:
查询所有
/index_hr/_search 注意传递的参数{}
带参数查询:
get 192.168.23.30:9200/index_hr/_search?q=ename:lisi
指定id查询:
get 192.168.23.30:9200/index_hr/emp_type/2
3,更新数据:
根据ID更新
post 192.168.182.66:9200/index_hr/emp_type/1
自动生成ID更新
post 192.168.23.30:9200/my_index/my_type/s40HiGwBg5JLnGO8RVwg
4 ,删除数据
根据id删除
delete 192.168.182.66:9200/index_hr/emp_type/1
再次查询
{“_index”:“my_index”,“_type”:“my_type”,“_id”:“s40HiGwBg5JLnGO8RVwg”,“found”:false}
3.7 springboot整合es
pom.xml(springboot版本不使用最新的 建议:2.1.6.RELEASE)
org.springframework.boot
spring-boot-starter-data-elasticsearch
application.properties 配置:
spring.data.elasticsearch.cluster-name=my-application
#9200 http请求端口
#9300 java 链接es的端口
spring.data.elasticsearch.cluster-nodes=192.168.23.81:9300
entity:
package com.aaa.sbm.entity;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import java.util.Date;
/**
-
fileName:Order
-
description:
-
author:zz
-
createTime:2019/8/16 9:39
-
version:1.0.0
*/
@Document(indexName =“index_order”,type = “order_type”,shards = 3,replicas = 1)
public class Order {@Id
private long id;
private String orderNo;
private String orderName;
private String orderTime;
private Integer customId;public long getId() {
return id;
}public void setId(long id) {
this.id = id;
}public String getOrderNo() {
return orderNo;
}public void setOrderNo(String orderNo) {
this.orderNo = orderNo;
}public String getOrderName() {
return orderName;
}public void setOrderName(String orderName) {
this.orderName = orderName;
}public String getOrderTime() {
return orderTime;
}public void setOrderTime(String orderTime) {
this.orderTime = orderTime;
}public Integer getCustomId() {
return customId;
}public void setCustomId(Integer customId) {
this.customId = customId;
}@Override
public String toString() {
return “Order{” +
“id=” + id +
“, orderNo='” + orderNo + ‘’’ +
“, orderName='” + orderName + ‘’’ +
“, orderTime=” + orderTime +
“, customId=” + customId +
‘}’;
}
}
dao:
package com.aaa.sbm.esdao;
import com.aaa.sbm.entity.Order;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
/**
- fileName:OrderEsDao
- description:
- author:zz
- createTime:2019/8/16 9:53
- version:1.0.0
*/
public interface OrderEsDao extends ElasticsearchRepository<Order,Long> {
}
service:
package com.aaa.sbm.service;
import com.aaa.sbm.entity.Order;
import java.util.List;
/**
-
fileName:OrderService
-
description:
-
author:zz
-
createTime:2019/8/16 9:59
-
version:1.0.0
*/
public interface OrderService {/**
- 带参查询order列表
- @param param
- @return
*/
List getList(String param,int type);
/**
- 向索引中添加数据
- @param order
- @return
/
int save(Order order);
/* - 向索引中修改数据
- @param order
- @return
/
int update(Order order);
/* - 向索引中删除数据
- @id
- @return
*/
int delete(long id);
}
package com.aaa.sbm.service;
import com.aaa.sbm.entity.Order;
import com.aaa.sbm.esdao.OrderEsDao;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
-
fileName:OrderServiceImpl
-
description:
-
author:zz
-
createTime:2019/8/16 10:29
-
version:1.0.0
*/
@Service
public class OrderServiceImpl implements OrderService {@Autowired
private OrderEsDao orderEsDao;@Override
public List getList(String param,int type) {QueryBuilder queryBuilder = null; if(type==0){ //查询所有 queryBuilder = QueryBuilders.matchAllQuery(); }else if(type==1&&!StringUtils.isEmpty(param)){ //查询匹配的单个列的值 //类似于mybatis中 orderName =#{param} queryBuilder = QueryBuilders.matchQuery("orderName",param); }else if(type==2&&!StringUtils.isEmpty(param)){//查询order中所有为字符串的匹配值 // 类似于mybatis中 (orderNo =#{param} or orderName =#{param}) queryBuilder = QueryBuilders.multiMatchQuery(param,"orderNo","orderName",); }else if(type==3&&!StringUtils.isEmpty(param)){//单列模糊查询 //类似于mybatis中 orderName like '%${param}%' queryBuilder = QueryBuilders.wildcardQuery("orderName","*"+param+"*"); } //获取order对象迭代集合 Iterable<Order> search = orderEsDao.search(queryBuilder); //返回迭代器 Iterator<Order> iterator = search.iterator(); //定义返回对象 List<Order> orders = new ArrayList<>(); //迭代对象 while(iterator.hasNext()){ orders.add(iterator.next()); } return orders;
}
@Override
public int save(Order order) {
//向es中存储对象
Order rorder = orderEsDao.save(order);
if(rorder!=null)
return 1;
return 0;
}@Override
public int update(Order order) {
//向es中存储对象
Order rorder = orderEsDao.save(order);
if(rorder!=null)
return 1;
return 0;
}@Override
public int delete(long id) {
try {
orderEsDao.deleteById(id);
return 1;
}catch (Exception e){
e.printStackTrace();
}
return 0;
}
}
controller:
package com.aaa.sbm.controller;
import com.aaa.sbm.entity.Order;
import com.aaa.sbm.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
/**
-
fileName:OrderController
-
description:
-
author:zz
-
createTime:2019/8/16 10:59
-
version:1.0.0
*/
@RestController
public class OrderController {@Autowired
private OrderService orderService;/**
- es的order 索引查询
- @param name
- @param type
- @return
*/
@RequestMapping(“orderList”)
public Object list(@RequestParam(required = true,defaultValue =“”) String name,@RequestParam(required = true,defaultValue =“0”) Integer type){
return orderService.getList(name,type);
}
/**
- order索引添加
- @param order
- @return
*/
@RequestMapping(“orderAdd”)
public Object add(Order order){
return orderService.save(order);
}
/**
- order索引更新
- @param order
- @return
*/
@RequestMapping(“orderUpdate”)
public Object update(Order order){
return orderService.save(order);
}
/**
- order索引值的删除
- @param id
- @return
*/
@RequestMapping(“orderDelete”)
public Object delete(Long id){
return orderService.delete(id);
}
}
启动类:
package com.aaa.sbm;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
@SpringBootApplication
@MapperScan(“com.aaa.sbm.dao”)
@EnableElasticsearchRepositories(“com.aaa.sbm.esdao”)
public class SpringbootMabatisApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootMabatisApplication.class, args);
}
}
测试
http://localhost:8888/orderList
//查询时,参数为小写
http://localhost:8888/orderList?name=orderb&type=1
http://localhost:8888/orderList?name=ord10002&type=2
http://localhost:8888/orderList?name=orderb&type=3
http://localhost:8888/orderAdd?id=4&orderNo=ord100022&orderName=orderaa&orderTime=2019-08-16&customId=2
http://localhost:8888/orderUpdate?id=4&orderNo=ord100022&orderName=orderaa&orderTime=2019-08-16&customId=2
http://localhost:8888/orderDelete?id=4文章来源:https://www.toymoban.com/news/detail-476047.html
4,知识点总结
5,本章面试题文章来源地址https://www.toymoban.com/news/detail-476047.html
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