ElasticSearch（十一）：Spring Data ElasticSearch 的使用（一）
1、环境准备
我本地使用的环境为：
虚拟机版本：Centos 7.3 两台 IP 分别为：192.168.56.12， 192.168.56.13
Elasticsearch版本：6.4.0 （已安装IK分词器）
虚拟机中JDK版本：12.0.1
宿主机系统：Windows 10
宿主机JDK版本：1.8
Idea版本： 2019.1.3
2、创建工程
1)、在Idea中创建一个Maven工程，并导入Spring Data Elasticsearch依赖。
Spring Data Elasticsearch依赖（pom.xml）:
1 <?xml version="1.0" encoding="UTF-8"?>
2 <project xmlns="http://maven.apache.org/POM/4.0.0"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
5 <modelVersion>4.0.0</modelVersion>
6
7 <groupId>com.Aiden</groupId>
8 <artifactId>SpringData-elasticsearch</artifactId>
9 <version>1.0-SNAPSHOT</version>
10
11 <dependencies>
12 <dependency>
13 <groupId>org.elasticsearch</groupId>
14 <artifactId>elasticsearch</artifactId>
15 <version>5.6.8</version>
16 </dependency>
17 <dependency>
18 <groupId>org.elasticsearch.client</groupId>
19 <artifactId>transport</artifactId>
20 <version>5.6.8</version>
21 </dependency>
22 <dependency>
23 <groupId>org.apache.logging.log4j</groupId>
24 <artifactId>log4j-to-slf4j</artifactId>
25 <version>2.9.1</version>
26 </dependency>
27 <dependency>
28 <groupId>org.slf4j</groupId>
29 <artifactId>slf4j-api</artifactId>
30 <version>1.7.24</version>
31 </dependency>
32 <dependency>
33 <groupId>org.slf4j</groupId>
34 <artifactId>slf4j-simple</artifactId>
35 <version>1.7.21</version>
36 </dependency>
37 <dependency>
38 <groupId>log4j</groupId>
39 <artifactId>log4j</artifactId>
40 <version>1.2.12</version>
41 </dependency>
42 <dependency>
43 <groupId>junit</groupId>
44 <artifactId>junit</artifactId>
45 <version>4.12</version>
46 </dependency>
47
48
49 <dependency>
50 <groupId>com.fasterxml.jackson.core</groupId>
51 <artifactId>jackson-core</artifactId>
52 <version>2.8.1</version>
53 </dependency>
54 <dependency>
55 <groupId>com.fasterxml.jackson.core</groupId>
56 <artifactId>jackson-databind</artifactId>
57 <version>2.8.1</version>
58 </dependency>
59 <dependency>
60 <groupId>com.fasterxml.jackson.core</groupId>
61 <artifactId>jackson-annotations</artifactId>
62 <version>2.8.1</version>
63 </dependency>
64
65
66 <dependency>
67 <groupId>org.springframework.data</groupId>
68 <artifactId>spring-data-elasticsearch</artifactId>
69 <version>3.0.5.RELEASE</version>
70 <exclusions>
71 <exclusion>
72 <groupId>org.elasticsearch.plugin</groupId>
73 <artifactId>transport-netty4-client</artifactId>
74 </exclusion>
75 </exclusions>
76 </dependency>
77
78 <dependency>
79 <groupId>org.springframework</groupId>
80 <artifactId>spring-test</artifactId>
81 <version>5.0.4.RELEASE</version>
82 </dependency>
83
84 </dependencies>
85
86
87 </project>
2）、创建配置文件
在maven工程的resource目录下创建Spring Data Elasticsearch的配置文件 ApplicationContext.xml，并引入Elasticsearch命名空间
ApplicationContext.xml文件内容：
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:context="http://www.springframework.org/schema/context"
5 xmlns:elasticsearch="http://www.springframework.org/schema/data/elasticsearch"
6 xsi:schemaLocation="
7 http://www.springframework.org/schema/beans
8 http://www.springframework.org/schema/beans/spring-beans.xsd
9 http://www.springframework.org/schema/context
10 http://www.springframework.org/schema/context/spring-context.xsd
11 http://www.springframework.org/schema/data/elasticsearch
12 http://www.springframework.org/schema/data/elasticsearch/spring-elasticsearch-1.0.xsd
13 ">
14
15
16 </beans>
3）、创建实体Film
在maven工程中创建包com.Aiden.doamin，并在此包下创建实体类Film
1 package com.Aiden.domain;
2
3 import org.springframework.data.annotation.Id;
4 import org.springframework.data.elasticsearch.annotations.Document;
5 import org.springframework.data.elasticsearch.annotations.Field;
6 import org.springframework.data.elasticsearch.annotations.FieldType;
7
8 public class Film {
9
10 private Long id;
11 private String title;
12 private String content;
13 private String date;
14 private String price;
15 private String director;
16
17 public Long getId() {
18 return id;
19 }
20
21 public void setId(Long id) {
22 this.id = id;
23 }
24
25 public String getTitle() {
26 return title;
27 }
28
29 public void setTitle(String title) {
30 this.title = title;
31 }
32
33 public String getContent() {
34 return content;
35 }
36
37 public void setContent(String content) {
38 this.content = content;
39 }
40
41 public String getDate() {
42 return date;
43 }
44
45 public void setDate(String date) {
46 this.date = date;
47 }
48
49 public String getPrice() {
50 return price;
51 }
52
53 public void setPrice(String price) {
54 this.price = price;
55 }
56
57 public String getDirector() {
58 return director;
59 }
60
61 public void setDirector(String director) {
62 this.director = director;
63 }
64
65 @Override
66 public String toString() {
67 return "Film{" +
68 "id=" + id +
69 ", title='" + title + '\'' +
70 ", content='" + content + '\'' +
71 ", date='" + date + '\'' +
72 ", price='" + price + '\'' +
73 ", director='" + director + '\'' +
74 '}';
75 }
76 }
4）、创建Dao
在maven工程中创建com.Aiden.dao包，并在包中创建仓库 FilmRepository
1 package com.Aiden.dao;
2
3 import com.Aiden.domain.Film;
4 import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
5 import org.springframework.stereotype.Repository;
6
7 @Repository
8 public interface FilmRepository extends ElasticsearchRepository<Film,Long> {
9
10 }
5）、创建Service
在maven工程中创建com.Aiden.service包，并在包中创建 FilmService 接口，并在其中添加save方法
1 package com.Aiden.service;
2
3 import com.Aiden.domain.Film;
4
5 public interface FilmService {
6
7 public void save(Film film);
8
9 }
在刚创建的service包下创建Impl包（即com.Aiden.service.Impl包），并在此包中创建FilmServiceImpl类并实现FilmService接口，实现其方法
1 package com.Aiden.service.impl;
2
3 import com.Aiden.dao.FilmRepository;
4 import com.Aiden.domain.Film;
5 import com.Aiden.service.FilmService;
6 import org.springframework.beans.factory.annotation.Autowired;
7 import org.springframework.stereotype.Service;
8
9 @Service
10 public class FilmServiceImpl implements FilmService {
11
12 @Autowired
13 private FilmRepository filmRepository;
14
15 public void save(Film film) {
16 filmRepository.save(film);
17 }
18
19 }
6）、修改Spring Data Elasticsearch配置文件ApplicationContext.xml，完成项目配置
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:context="http://www.springframework.org/schema/context"
5 xmlns:elasticsearch="http://www.springframework.org/schema/data/elasticsearch"
6 xsi:schemaLocation="
7 http://www.springframework.org/schema/beans
8 http://www.springframework.org/schema/beans/spring-beans.xsd
9 http://www.springframework.org/schema/context
10 http://www.springframework.org/schema/context/spring-context.xsd
11 http://www.springframework.org/schema/data/elasticsearch
12 http://www.springframework.org/schema/data/elasticsearch/spring-elasticsearch-1.0.xsd
13 ">
14
15 <!-- 扫描Dao包，自动创建实例 -->
16 <elasticsearch:repositories base-package="com.Aiden.dao"/>
17
18 <!-- 扫描Service包，创建Service的实体 -->
19 <context:component-scan base-package="com.Aiden.service"/>
20
21 <!-- 配置elasticSearch的连接 -->
22 <elasticsearch:transport-client id="client" cluster-nodes="192.168.56.12:9300,192.168.56.13:9300" cluster-name="my-application"/>
23
24
25 <!-- ElasticSearch模版对象 -->
26 <bean id="elasticsearchTemplate" class="org.springframework.data.elasticsearch.core.ElasticsearchTemplate">
27 <constructor-arg name="client" ref="client"/>
28 </bean>
29
30 </beans>
7）、配置实体类
基于spring data elasticsearch注解配置索引、映射和实体的关系
1 package com.Aiden.domain;
2
3 import org.springframework.data.annotation.Id;
4 import org.springframework.data.elasticsearch.annotations.Document;
5 import org.springframework.data.elasticsearch.annotations.Field;
6 import org.springframework.data.elasticsearch.annotations.FieldType;
7
8 @Document(indexName = "film",type = "action")
9 public class Film {
10 @Id
11 private Long id;
12 @Field(index = true,analyzer = "ik_max_word",store = true,searchAnalyzer = "ik_max_word",type = FieldType.text)
13 private String title;
14 @Field(index = true,analyzer = "ik_max_word",store = true,searchAnalyzer = "ik_max_word",type = FieldType.text)
15 private String content;
16 @Field(index = true,analyzer = "ik_max_word",store = true,searchAnalyzer = "ik_max_word",type = FieldType.text)
17 private String date;
18 @Field(index = true,analyzer = "ik_max_word",store = true,searchAnalyzer = "ik_max_word",type = FieldType.text)
19 private String price;
20 @Field(index = true,analyzer = "ik_max_word",store = true,searchAnalyzer = "ik_max_word",type = FieldType.text)
21 private String director;
22
23 public Long getId() {
24 return id;
25 }
26
27 public void setId(Long id) {
28 this.id = id;
29 }
30
31 public String getTitle() {
32 return title;
33 }
34
35 public void setTitle(String title) {
36 this.title = title;
37 }
38
39 public String getContent() {
40 return content;
41 }
42
43 public void setContent(String content) {
44 this.content = content;
45 }
46
47 public String getDate() {
48 return date;
49 }
50
51 public void setDate(String date) {
52 this.date = date;
53 }
54
55 public String getPrice() {
56 return price;
57 }
58
59 public void setPrice(String price) {
60 this.price = price;
61 }
62
63 public String getDirector() {
64 return director;
65 }
66
67 public void setDirector(String director) {
68 this.director = director;
69 }
70
71 @Override
72 public String toString() {
73 return "Film{" +
74 "id=" + id +
75 ", title='" + title + '\'' +
76 ", content='" + content + '\'' +
77 ", date='" + date + '\'' +
78 ", price='" + price + '\'' +
79 ", director='" + director + '\'' +
80 '}';
81 }
82 }
8）、创建测试类
在maven工程的test文件夹下创建测试类 SpringDataElasticSearchTest，并添加测试方法
1 package com.Aiden.Test;
2
3 import com.Aiden.domain.Film;
4 import com.Aiden.service.FilmService;
5 import org.junit.Test;
6 import org.junit.runner.RunWith;
7 import org.springframework.beans.factory.annotation.Autowired;
8 import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
9 import org.springframework.test.context.ContextConfiguration;
10 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
11
12 import java.util.List;
13
14
15 @RunWith(SpringJUnit4ClassRunner.class)
16 @ContextConfiguration(locations = "classpath:ApplicationContext.xml")
17 public class SpringDataElasticSearchTest {
18
19 @Autowired
20 private FilmService filmService;
21
22 @Autowired
23 private ElasticsearchTemplate elasticsearchTemplate;
24
25 @Test
26 public void createIndex() throws Exception {
27 elasticsearchTemplate.createIndex(Film.class);
28 elasticsearchTemplate.putMapping(Film.class);
29 }
30
31 @Test
32 public void saveFilm1() {
33 Film film = new Film();
34 film.setTitle("蜘蛛侠：英雄远征 Spider-Man: Far from Home");
35 film.setContent("在复仇者联盟众英雄的努力下，于灭霸无限手套事件中化作为灰烬的人们，重新回到了人世间，曾经消失的蜘蛛侠 彼得帕克 也回归到了普通的生活之中，数月后，蜘蛛侠彼得帕克所在的学校举行了欧洲旅游，帕克也在其中， 在欧州威尼斯旅行时，一个巨大无比的水怪袭击了威尼斯，不敌敌人的蜘蛛侠幸得一位自称神秘客的男子搭救才击退敌人，之后 神盾局局长找上正在旅游的彼得帕克并要求其加入神盾局，并安排神秘客协助帕克，神秘客自称来自其他宇宙，并告知一群名为元素众的邪恶势力已经入侵这个宇宙了，为了守护来之不易的和平，蜘蛛侠决定与神秘客联手，然而在神秘客那头罩之中，似乎隐藏着什么不为人知的真相……");
36 film.setDate("2019-06-28");
37 film.setDirector("乔·沃茨");
38 film.setPrice("78");
39 film.setId(1L);
40 filmService.save(film);
41 }
42
43 }
9）、运行测试
执行SpringDataElasticSearchTest中的测试方法 createIndex 、saveFilm1，创建索引及加入文档。
测试方法执行完毕，在head插件中查看Elasticsearch集群中索引情况：
索引创建成功：
查看索引信息中的mapping信息，创建正常：
执行saveFilm1加入文档，文档加入成功：
至此Spring Data Elasticsearch工程创建成功！
