1. ElasticSearch与Springboot的整合
1.1 安装elasticsearch 6.5.4
（1）安装环境win7、java 8
elasticsearch 下载地址https://www.elastic.co/cn/downloads/elasticsearch
（2）解压该文件到适当的位置，解压了3份
修改配置文件
（3）用sublime打开修改或新增以下配置
# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
# Before you set out to tweak and tune the configuration, make sure you
# understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: elasticsearch
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: master
node.master: true
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
#path.data: /path/to/data
#
# Path to log files:
#
#path.logs: /path/to/logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
#network.host: 192.168.0.1
#
# Set a custom port for HTTP:
#
http.port: 9200
network.host: 127.0.0.1
（4）保存后启动elasticsearch.bat
（5）同理，其他两个节点只需要改下配置即可
cluster.name: elasticsearch
node.name: node-1
http.port: 9201
network.host: 127.0.0.1 #服务连接发布地址
cluster.name: elasticsearch
node.name: node-2
http.port: 9202
network.host: 127.0.0.1 #服务连接发布地址
1.2 安装elasticsearch-head-master插件
（1）下载地址https://github.com/mobz/elasticsearch-head
（2）解压放到合适的地址
（3）安装node运行环境
https://nodejs.org/en/download/，查看node版本输入： node --version
（4）安装完node之后编译elasticsearch-head
执行npm install -g grunt-cli 编译源码
执行npm install 安装服务
执行grunt server启动服务
（5）启动head插件后情况
（6）打开http://localhost:9100/
1.3 整合springboot
1.3.1 新建springboot项目
添加依赖
<!--es依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<!--log4j-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.7</version>
</dependency>
1.3.2 新建包目录结构
1.3.3 配置文件application.properties
server.port=8888
#节点的地址 注意api模式下端口号是9300，千万不要写成9200
spring.data.elasticsearch.cluster-nodes=192.168.1.8:9300
#elasticsearch集群名称，默认的是elasticsearc，具体在配置文件中查看
spring.data.elasticsearch.cluster-name=my-application
#是否开启本地存储
spring.data.elasticsearch.repositories.enabled=true
1.3.4 以商品的增删改查为例：
（1）实体类Goods.java
package com.xxx.entity;
import org.springframework.data.elasticsearch.annotations.Document;
import java.io.Serializable;
/**
* @ClassName Goods
* @Description TODO
* @Author Administrator
* @Date 2019/1/12 13:20
* @Version 1.0
*/
/**
* indexName必须为小写，可理解为数据库名
*/
@Document(indexName = "goodsinfo", type = "goods")
public class Goods implements Serializable {
private Long id;
private String name;
private String description;
/**
* 必须添加无参构造器，但是jackson的反序列化需要使用无参构造函数
*/
public Goods() {
}
public Goods(Long id, String name, String description) {
this.id = id;
this.name = name;
this.description = description;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
（2）数据操作类GoodsRepository.java
package com.xxx.repository;
import com.xxx.entity.Goods;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Component;
/**
* @ClassName GoodsRepository
* @Description TODO
* @Author Administrator
* @Date 2019/1/12 13:24
* @Version 1.0
*/
@Component
public interface GoodsRepository extends ElasticsearchRepository<Goods, Long> {
}
（3）访问api类GoodsController.java
package com.xxx.controller;
import com.xxx.entity.Goods;
import com.xxx.repository.GoodsRepository;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.QueryStringQueryBuilder;
import org.elasticsearch.index.query.functionscore.FunctionScoreQueryBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.elasticsearch.core.query.NativeSearchQuery;
import org.springframework.data.elasticsearch.core.query.SearchQuery;
import org.springframework.data.web.PageableDefault;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Optional;
/**
* @ClassName GoodsController
* @Description TODO
* @Author Administrator
* @Date 2019/1/12 13:26
* @Version 1.0
*/
@RestController
@RequestMapping("/goods")
public class GoodsController {
@Autowired
private GoodsRepository goodsRepository;
/**
* 保存
* @param name
* @param description
* @return
*/
@RequestMapping("/save")
public String save(String name, String description){
Goods goods = new Goods(System.currentTimeMillis(), name, description);
goodsRepository.save(goods);
return "success";
}
/**
* 更新
* @param id
* @param name
* @param description
* @return
*/
@RequestMapping("/update")
public String update(Long id, String name, String description){
Goods goods = new Goods(id, name, description);
goodsRepository.save(goods);
return "success";
}
/**
* 根据id查找
* @param id
* @return
*/
@RequestMapping("/selectOne")
public Optional<Goods> selectOne(Long id){
return goodsRepository.findById(id);
}
/**
* 删除
* @param id
* @return
*/
@RequestMapping("/delete")
public String delete(Long id){
goodsRepository.deleteById(id);
return "success";
}
/**
* 限定关键词的搜索
* @param name
* @param pageable
* @return
*/
@RequestMapping("/getGoodsListByItem")
public List<Goods> getGoodsListByItem(String name, @PageableDefault(page=0, value = 10) Pageable pageable){
//设置分页
QueryBuilder queryBuilder = QueryBuilders.matchQuery("name", name);
Page<Goods> goodsPage = goodsRepository.search(queryBuilder, pageable);
return goodsPage.getContent();
}
/**
* 模糊搜索
* @param condition
* @return
*/
@RequestMapping("/getGoodsList")
public List<Goods> getGoodsList(String condition){
QueryStringQueryBuilder builder = new QueryStringQueryBuilder(condition);
Iterable<Goods> searchResult = goodsRepository.search(builder);
List<Goods> goodsList = new ArrayList<>();
Iterator<Goods> iterator = searchResult.iterator();
while (iterator.hasNext()){
goodsList.add(iterator.next());
}
return goodsList;
}
}
1.4 将项目上传到github托管
打开https://github.com/，注册账号，创建或登录
复制远程地址
在本地选择一个文件夹管理项目，打开git bash，输入git clone 您的github地址
之后将项目通过tortoise（小乌龟工具）add，然commit & push到远程即可。