ElasticSearch介绍（百度出来的）
ElasticSearch是一个基于Lucene的搜索服务器。它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口.Elasticsearch是用Java语言开发的，并作为Apache许可条款下的开放源码发布，是一种流行的企业级搜索引擎.ElasticSearch用于云计算中，能够达到实时搜索，稳定，可靠，快速，安装使用方便。官方客户端在Java，.NET（C＃），PHP，Python，Apache Groovy，Ruby和许多其他语言中都是可用的。根据DB-Engines的排名显示，Elasticsearch是最受欢迎的企业搜索引擎，其次是Apache Solr，也是基于Lucene。
ElasticSearch安装（win10环境）
下载地址https://www.elastic.co/cn/downloads/elasticsearch (ZIP包)
解压ZIP,修改config目录下配置文件elasticsearch.yml
# ======================== 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: my-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: master
#
# 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: 0.0.0.0
#
# Set a custom port for HTTP:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
discovery.zen.ping.unicast.hosts: ["0.0.0.0"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes: 3
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true
http.cors.enabled: true
http.cors.allow-origin: "*"
node.master: true
node.data: true
启动bin目录下elasticsearch.bat
浏览器输入http://localhost:9200/ ,显示如下证明安装成功
{
"name" : "master",
"cluster_name" : "my-application",
"version" : {
"number" : "2.4.0",
"build_hash" : "ce9f0c7394dee074091dd1bc4e9469251181fc55",
"build_timestamp" : "2016-08-29T09:14:17Z",
"build_snapshot" : false,
"lucene_version" : "5.5.2"
},
"tagline" : "You Know, for Search"
}
ElasticSearch集群搭建（win10环境，本地电脑多个实例）
将解压后的压缩包复制多份，修改配置文件。
ElasticSearch-head-master安装
下载ZIP文件，github.com/mobz/elasti…
安装node，由于head插件本质上还是一个nodejs的工程，因此需要安装node，使用npm来安装依赖的包。
安装grunt，grunt是一个很方便的构建工具，可以进行打包压缩、测试、执行等等的工作，5.0里的head插件就是通过grunt启动的。因此需要安装一下grunt
修改elasticsearch-head-master源码
修改服务器监听地址(Gruntfile.js)
connect: {
server: {
options: {
port: 9100,
hostname: '*',
base: '.',
keepalive: true
}
}
}
增加这一行：增加hostname属性，设置为*
先启动elasticsearch，进入elasticsearch-head-master，执行npm install （可能phantomjs耗时较长，最后启动nodejs: grunt server
浏览器输入localhost:9100
Springboot集成elasticsearch（注意版本、注意版本、注意版本）
spring data elasticsearch 和 elasticsearch版本一定要对应
代码实现
application.properties
spring.data.elasticsearch.cluster-name=my-application
spring.data.elasticsearch.repositories.enabled=true
spring.data.elasticsearch.cluster-nodes=127.0.0.1:9300
server.port=1111
pom
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.gssx</groupId>
<artifactId>baas</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>baas</name>
<description>cobaas平台</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>com.vladsch.flexmark</groupId>
<artifactId>flexmark-util</artifactId>
<version>0.18.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>1.5.9.RELEASE</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.6</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.6</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
实体
@Document(indexName="bank3",type="account3")
public class EsBlog implements Serializable {
@Id
private Long id;
private String firstname;
private String lastname;
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getFirstname() {
return firstname;
}
public String getLastname() {
return lastname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}
controller
@Autowired
private BlogSearchService blogSearchService;
@RequestMapping(value = "/query")
public List<EsBlog> query(@RequestParam String q) {
List<EsBlog> search = blogSearchService.search(q, q);
return search;
}
@RequestMapping(value = "/save")
public void save(@RequestBody EsBlog esBlog) {
blogSearchService.save(esBlog);
}
@RequestMapping(value = "/update")
public void updata(@RequestBody EsBlog esBlog) {
blogSearchService.update(esBlog);
}
@RequestMapping(value = "/delete")
public void delete(@RequestParam Integer id) {
blogSearchService.delete(id);
}
BlogSearchService
void save (EsBlog eb);
List<EsBlog> search(String firstname, String lastname);
void update(EsBlog esBlog);
void delete(Integer id);
BlogSearchServiceImpl
@Service
public class BlogSearchServiceImpl implements BlogSearchService {
@Autowired
private BlogRepository blogRepository;
@Override
public void save(EsBlog poem) {
blogRepository.save(poem);
}
@Override
public List<EsBlog> search(String firstname, String lastname) {
return blogRepository.findByFirstnameLikeOrLastnameLike(firstname, lastname);
}
@Override
public void update(EsBlog esBlog) {
EsBlog esBlog1 = blogRepository.queryEsblogById(esBlog.getId());
System.out.println(esBlog1.getFirstname() + "==" + esBlog1.getLastname());
esBlog1.setLastname(esBlog.getLastname());
blogRepository.save(esBlog1);
}
@Override
public void delete(Integer id) {
EsBlog esBlog1 = blogRepository.queryEsblogById(Long.valueOf(id));
blogRepository.delete(esBlog1);
}
}
BlogRepository
public interface BlogRepository extends ElasticsearchRepository<EsBlog, Long> {
List<EsBlog> findByFirstnameLikeOrLastnameLike(String firstname, String lastname);
EsBlog queryEsblogById(Long id);
}
结语
本地搭建的一个demo，大佬勿喷。
