SpringBoot + Elasticsearch + Kibana （7.8.1）入门应用
一、下载安装
- ElasticSearch 下载地址
…/elasticsearch-7.8.1/bin 的 elasticsearch.bat
…/elasticsearch-7.8.1/config/elasticsearch.yml
//# 主要配置
network.host: 127.0.0.1
http.port: 9200
//# 解决跨域访问
http.cors.enabled: true
http.cors.allow-origin: "*"
- Kibana下载地址 一个客户端数据展示项目
kibana-7.8.1-windows-x86_64\bin\kibana.bat
kibana-7.8.1-windows-x86_64\config\kibana.yml
// # es地址
elasticsearch.hosts: ["http://127.0.0.1:9200/"]
// # 汉化
i18n.locale: "zh-CN"
- elasticsearch-head-master下载地址 使用这个客户端需要nodejs环境，需要提前下载。是另一个客户端数据展示项目。可以只单用kibana，也可以配合使用。
使用教程参考github readme
注意：kibana 和 ES 版本要完全一致；jkd8 以上可用
二、使用kibana操作Es的指令示例
put
get
三、Springboot + Es 集成项目搭建
- 新建一个空SpringBoot项目。
- pom.xml
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.2.5.RELEASEversion>
<relativePath/>
parent>
<groupId>com.yxpwebgroupId>
<artifactId>elksartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>elksname>
<description>Demo project for Spring Bootdescription>
<properties>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
<version>2.3.0.RELEASEversion>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.62version>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
<exclusions>
<exclusion>
<groupId>org.junit.vintagegroupId>
<artifactId>junit-vintage-engineartifactId>
exclusion>
exclusions>
dependency>
<dependency>
<groupId>org.elasticsearch.clientgroupId>
<artifactId>elasticsearch-rest-high-level-clientartifactId>
<version>7.8.1version>
dependency>
<dependency>
<groupId>org.elasticsearchgroupId>
<artifactId>elasticsearchartifactId>
<version>7.8.1version>
dependency>
<dependency>
<groupId>org.elasticsearch.clientgroupId>
<artifactId>elasticsearch-rest-clientartifactId>
<version>7.8.1version>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
plugin>
plugins>
build>
project>
注意：引入elasticsearch-rest-high-level-client（7.8.1）的自带版本和我们下载的ES版本不一致，需要手动添加elasticsearch（7.8.1）和elasticsearch-rest-client（7.8.1），否则会有报错，无法使用。用自己引入7.8.1的将原来的6.8.6覆盖。
- 新建User.java 的 pojo 类
@Component
public class User {
private String name;
private int age;
public User(){
}
public User(String name, int age){
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "User{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}
如果用Lombok可以不用getset 方法。但是不建议使用Lombok。
四、使用的@Test注解做初步测试。
- 创建Client注入到spring
@Configuration
@Component
public class ElasticSearchConfig {
@Bean
public RestHighLevelClient restHighLevelClient(){
return new RestHighLevelClient(
RestClient.builder(
new HttpHost("localhost", 9200, "http")));
}
}
- 测试包下创建测试类 com.yxpweb.elks.ElksApplicationTests，注入客户端。
@SpringBootTest
class ElksApplicationTests {
@Autowired
RestHighLevelClient restHighLevelClient;
}
以下代码添加在ElksApplicationTests 类中。
- 创建索引 yxpweb-elk
@Test
void testCreateIndex() {
CreateIndexRequest createIndexRequest = new CreateIndexRequest("yxpweb-elk");
try {
CreateIndexResponse createIndexResponse = restHighLevelClient.indices().create(createIndexRequest, RequestOptions.DEFAULT);
System.out.println(createIndexResponse);
} catch (IOException e) {
e.printStackTrace();
}
}
- 判断索引是否存在
@Test
void testExistIndex() throws IOException {
GetIndexRequest getIndexRequest = new GetIndexRequest("yxpweb-elk");
boolean createIndexResponse = restHighLevelClient.indices().exists(getIndexRequest, RequestOptions.DEFAULT);
System.out.println(createIndexResponse);
}
- 通过id删除索引中的数据
DELETE /yxpweb_user/_doc/1
@Test
void testDeleteDocumentIndex() throws IOException{
DeleteRequest deleteIndexRequest = new DeleteRequest("yxpweb-elk", "1");
DeleteResponse deleteResponse = restHighLevelClient.delete(deleteIndexRequest, RequestOptions.DEFAULT);
//DeleteResponse[index=yxpweb_user,type=_doc,id=1,version=11,result=deleted,shards=ShardInfo{total=2, successful=1, failures=[]}]
System.out.println(deleteResponse);
}
即使数据已经被删除，依然会返回结果。version号会被更新。
- 删除索引
@Test
void testDeleteIndex() throws IOException{
DeleteIndexRequest deleteIndexRequest = new DeleteIndexRequest("yxpweb-elk");
deleteIndexRequest.timeout(TimeValue.timeValueMinutes(2));
deleteIndexRequest.timeout("2m");
AcknowledgedResponse acknowledgedResponse = restHighLevelClient.indices().delete(deleteIndexRequest, RequestOptions.DEFAULT);
System.out.println(acknowledgedResponse.isAcknowledged());
}
- 添加文档
@Test
void testAddDocument() throws IOException {
User yxp = new User("yxp", 33);
IndexRequest indexRequest = new IndexRequest("yxpweb_user");
indexRequest.id("1");
indexRequest.timeout(TimeValue.timeValueSeconds(1));
indexRequest.timeout("1s");
indexRequest.source(JSON.toJSONString(yxp), XContentType.JSON);
IndexResponse indexResponse = restHighLevelClient.index(indexRequest, RequestOptions.DEFAULT);
System.out.println(indexResponse.toString());
System.out.println(indexResponse.status());
}
更多操作 参考 API