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SpringBoot整合Elasticsearch

1.建立项目

2.Maven 依赖

进入到 ES 官方网站

ES 官方网站：https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/index.html

• 可以看到有低级和 高级的 Rest Client

3. pom配置

基于 springboot 2.1.7.RELEASE

<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope><exclusions><exclusion><groupId>org.junit.vintage</groupId><artifactId>junit-vintage-engine</artifactId></exclusion></exclusions></dependency><!-- ES --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-elasticsearch</artifactId></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-elasticsearch</artifactId><version>3.2.9.RELEASE</version></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-high-level-client</artifactId><version>6.8.23</version><exclusions><exclusion><groupId>org.elasticsearch.client</groupId><artifactId>transport</artifactId></exclusion><exclusion><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-client</artifactId></exclusion><exclusion><groupId>org.elasticsearch</groupId><artifactId>elasticsearch</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>transport</artifactId><version>6.8.23</version></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-client</artifactId><version>6.8.23</version></dependency><dependency><groupId>org.elasticsearch</groupId><artifactId>elasticsearch</artifactId><version>6.8.23</version></dependency><dependency><groupId>org.elasticsearch.plugin</groupId><artifactId>transport-netty4-client</artifactId><version>6.8.23</version></dependency><!-- Elasticsearch客户端依赖版本升级到6.8.32 新增x-pack依赖--><dependency><groupId>org.elasticsearch.client</groupId><artifactId>x-pack-transport</artifactId><version>6.8.23</version></dependency>

4.证书文件elastic-certificates.p12 拷贝

证书文件elastic-certificates.p12需拷贝到所有ES节点对应的目录下

• 注意：只需创建一次证书并将其复制到所有节点。

5.配置类 ElasticsearchConfig

支持x-pack 密码验证

/*** ES 配置 -----Elasticsearch 6.8.23* 通过实现配置配，初始化安全Elasticsearch客户端对象，包括ElasticsearchTemplate和RestHighLevelClient两者客户端类* 支持x-pack 密码验证*/@Slf4j
@Configuration
public class SecureElasticsearchConfig {//用户名 elastic@Value("${elasticsearch.xpack.username}")private String xpackUsername = "elastic";//用户密码@Value("${elasticsearch.xpack.password}")private String xpackrPassword;//证书路径  "/home/data/es"@Value("${elasticsearch.xpack.kspath}")private String certPath;//证书密码  ""@Value("${elasticsearch.xpack.kspwd}")private String certPassword;//集群名@Value("${elasticsearch.master.cluster-name}")private String masterClusterName;//节点名@Value("${elasticsearch.master.clusterNodes}")private String clusterNodes;//ip@Value("${elasticsearch.master.address}")private String masterAddress;//端口@Value("${elasticsearch.master.port}")private Integer masterPort;//    // es 连接超时时间
//    private int connectTimeOut;
//    // es socket 连接超时时间
//    private int socketTimeOut;
//    // es 请求超时时间
//    private int connectionRequestTimeOut;
//    // es 最大连接数
//    private int maxConnectNum;
//    // es 每个路由的最大连接数
//    private int maxConnectNumPerRoute;/***集群配置*/private Settings settings() {Settings.Builder builder = Settings.builder();//基础配置builder.put("cluster.name", masterClusterName);builder.put("xpack.security.user", xpackUsername+ ":" + xpackrPassword);// Keystore 配置builder.put("xpack.security.transport.ssl.keystore.path", certPath);builder.put("xpack.security.transport.ssl.keystore.password", certPassword);// Truststore 配置builder.put("xpack.security.transport.ssl.truststore.path", certPath);builder.put("xpack.security.transport.ssl.truststore.password", certPassword);// 验证模式配置builder.put("xpack.security.transport.ssl.verification_mode", "certificate");// 启用 X-Pack 安全功能builder.put("xpack.security.enabled", true);builder.put("xpack.security.transport.ssl.enabled", true);return builder.build();}/*** 初始化安全TransportClient类*/@Beanpublic TransportClient transportClient() throws Exception {//本地测试用// certPath="D:\\cdms\\es\\elastic-certificates.p12";log.info(">>>>>>>>>>> SecureElasticsearchConfig TransportClient 开始初始化");Settings settings = settings();PreBuiltXPackTransportClient client = new PreBuiltXPackTransportClient(settings);client.addTransportAddress(new TransportAddress(InetAddress.getByName(masterAddress), masterPort));return client;}/***初始化安全ElasticsearchTemplate类* 基于 spring-boot-starter-data*/@Beanpublic ElasticsearchTemplate elasticsearchTemplate(@Autowired TransportClient transportClient) throws Exception {log.info(">>>>>>>>>>> SecureElasticsearchConfig ElasticsearchTemplate 开始初始化");ElasticsearchTemplate secureElasticsearchTemplate;try {secureElasticsearchTemplate = new ElasticsearchTemplate(transportClient);return secureElasticsearchTemplate;} catch (Exception e) {log.error("SecureElasticsearchConfig  初始化ElasticsearchTemplate报错： ", e.getMessage());throw e;}}/*** 初始化安全RestHighLevelClient类* 只支持http  端口： 9200*/@Beanpublic RestHighLevelClient restHighLevelClient() {log.info(">>>>>>>>>>> SecureElasticsearchConfig RestHighLevelClient 开始初始化");final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();credentialsProvider.setCredentials(AuthScope.ANY,new UsernamePasswordCredentials(xpackUsername, xpackrPassword));RestClientBuilder builder = RestClient.builder(new HttpHost(masterAddress,9200)).setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {@Overridepublic HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpAsyncClientBuilder) {return httpAsyncClientBuilder.setDefaultCredentialsProvider(credentialsProvider);}});RestHighLevelClient client = new RestHighLevelClient(builder);//        // 连接延时配置
//        builder.setRequestConfigCallback(requestConfigBuilder -> {
//            requestConfigBuilder.setConnectTimeout(connectTimeOut);
//            requestConfigBuilder.setSocketTimeout(socketTimeOut);
//            requestConfigBuilder.setConnectionRequestTimeout(connectionRequestTimeOut);
//            return requestConfigBuilder;
//        });
//        // 连接数配置
//        builder.setHttpClientConfigCallback(httpClientBuilder -> {
//                    httpClientBuilder.setMaxConnTotal(maxConnectNum);
//                    httpClientBuilder.setMaxConnPerRoute(maxConnectNumPerRoute);
//                    httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
//                    return httpClientBuilder;
//        });return client;}/***初始化安全ElasticsearchRestTemplate类* 基于 spring-boot-starter-data*/@BeanElasticsearchRestTemplate elasticsearchRestTemplate(@Autowired RestHighLevelClient restHighLevelClient) {log.info(">>>>>>>>>>> SecureElasticsearchConfig ElasticsearchRestTemplate 开始初始化");return new ElasticsearchRestTemplate(restHighLevelClient);}}

6.nacos配置参数

elasticsearch:xpack:username: elasticpassword: escdmskspath: /home/data/eskspwd: master:cluster-name: gz-java-test-laasclusterNodes: master-test-laasaddress: 192.168.2.89port: 9300

7.测试

1.TransportClient

 @Autowiredprivate  TransportClient transportClient;@Testpublic void createIndex_transportClient() {String indexName="lass_test_transportclient";try {CreateIndexRequest request = new CreateIndexRequest(indexName);// 可以在此处添加更多设置，例如映射 (mapping) 和设置 (settings)CreateIndexResponse response = transportClient.admin().indices().create(request).actionGet();if (response.isAcknowledged()) {System.out.println("Index created successfully: " + indexName);} else {System.out.println("Index creation failed: " + indexName);}} catch (Exception e) {System.err.println("Error creating index: " + e.getMessage());}}@Testpublic void addDocuments_transportClient() {String indexName = "lass_test_transportclient";try {String json1 = "{" +"\"user\":\"kimchy\"," +"\"postDate\":\"2013-01-30\"," +"\"message\":\"trying out Elasticsearch\"" +"}";IndexResponse response1 = transportClient.prepareIndex(indexName, "_doc").setSource(json1, XContentType.JSON).get();//            if (response1.status() == RestStatus.CREATED) {
//                System.out.println("Document 1 indexed successfully.");
//            } else {
//                System.out.println("Failed to index Document 1.");
//            }String json2 = "{" +"\"user\":\"Tom\"," +"\"postDate\":\"2024-01-30\"," +"\"message\":\"lass升级 transportClient \"" +"}";transportClient.prepareIndex(indexName, "_doc").setSource(json2, XContentType.JSON).get();} catch (Exception e) {System.err.println("Error adding documents: " + e.getMessage());}}@Testpublic void deleteIndex_transportClient() {String indexName = "lass_test_transportclient";try {DeleteIndexRequest request = new DeleteIndexRequest(indexName);AcknowledgedResponse response = transportClient.admin().indices().delete(request).actionGet();if (response.isAcknowledged()) {System.out.println("Index deleted successfully: " + indexName);} else {System.out.println("Failed to delete index: " + indexName);}} catch (Exception e) {System.err.println("Error deleting index: " + e.getMessage());}}

GET lass_test_transportclient/_search
{"query":{"match_all" : {}}
}

2.ElasticsearchTemplate

@Data
@AllArgsConstructor
@NoArgsConstructor
@Accessors(chain = true)
@Document(indexName = "lass_test_people",type = "_doc",shards = 1,replicas = 1)
public class People {@Idprivate String id;// 整个name不被分词，切不创建索引// Keyword表示不被分词@Field(type= FieldType.Keyword,index = false)private String name;// address被ik分词// Text类型的属性才能被分词@Field(type = FieldType.Text)private String address;@Field(type = FieldType.Long,index = false)private int age;}

 @Autowiredprivate ElasticsearchTemplate elasticsearchTemplate;@Testpublic void createIndex_elasticsearchTemplate() {//根据实体类创建索引，boolean result1 = elasticsearchTemplate.createIndex(People.class);System.out.println(result1);//将索引放到软件里面boolean results = elasticsearchTemplate.putMapping(People.class);}@Testpublic void addDocuments_elasticsearchTemplate() {People peo = new People();peo.setId("123");peo.setName("张三");peo.setAddress("北京市海淀区回龙观东大街");peo.setAge(18);IndexQuery query = new IndexQuery();query.setObject(peo);String result = elasticsearchTemplate.index(query);System.out.println(result);}@Testpublic void bulk(){List<IndexQuery> list = new ArrayList<>();// IndexQuery多行写法IndexQuery indexQuery = new IndexQuery();indexQuery.setObject(new People("1", "王五", "北京东城", 12));list.add(indexQuery);// IndexQuery 连缀写法list.add(new IndexQueryBuilder().withObject(new People("2", "赵六", "北京西城", 13)).build());list.add(new IndexQueryBuilder().withObject(new People("3", "吴七", "北京昌平", 14)).build());elasticsearchTemplate.bulkIndex(list);}@Testpublic void deletee_elasticsearchTemplate() {boolean result = elasticsearchTemplate.deleteIndex(People.class);System.out.println(result);}

3.RestHighLevelClient

@Data
@AllArgsConstructor
@NoArgsConstructor
@Accessors(chain = true)
@Document(indexName = "lass_test_student",type = AudienceEsConst.DOC, createIndex = false, useServerConfiguration = true)
public class Student {@Idprivate String id;// 整个name不被分词，切不创建索引// Keyword表示不被分词@Field(type= FieldType.Keyword,index = false)private String name;// address被ik分词// Text类型的属性才能被分词@Field(type = FieldType.Text)private String address;@Field(type = FieldType.Long,index = false)private int age;}

 @Autowiredprivate RestHighLevelClient restHighLevelClient;@Testpublic void createIndex_restHighLevelClient() throws IOException {String indexName = "lass_test_resthighlevelclient";XContentBuilder builder = XContentFactory.jsonBuilder();builder.startObject();{builder.field("user", "zhangSan");builder.timeField("postDate", new Date());builder.field("message", "laas 升级 RestHighLevelClient ");}builder.endObject();IndexRequest request = new IndexRequest(indexName, "doc").source(builder);IndexResponse indexResponse = restHighLevelClient.index(request, RequestOptions.DEFAULT);if (indexResponse.status() == RestStatus.CREATED) {System.out.println("Document 1 indexed successfully.");} else {System.out.println("Failed to index Document 1.");}}@Testpublic void addDocuments_restHighLevelClient() {String indexName = "lass_test_resthighlevelclient";try {Map<String, Object> jsonMap = new HashMap<>();jsonMap.put("user", "李四");jsonMap.put("postDate", new Date());jsonMap.put("message", "laas 升级 RestHighLevelClient ");IndexRequest indexRequest = new IndexRequest(indexName,"doc").source(jsonMap);IndexResponse indexResponse = restHighLevelClient.index(indexRequest, RequestOptions.DEFAULT);if (indexResponse.status() == RestStatus.CREATED) {System.out.println("Document 1 indexed successfully.");} else {System.out.println("Failed to index Document 1.");}} catch (Exception e) {System.err.println("Error adding documents: " + e.getMessage());}}@Testpublic void deletee_restHighLevelClient() {String indexName = "lass_test_resthighlevelclient";boolean result = elasticsearchTemplate.deleteIndex(indexName);System.out.println(result);}

4.ElasticsearchRestTemplate

 @Autowiredprivate  ElasticsearchRestTemplate  restTemplate;@Testpublic void createIndex_restTemplate() {//根据实体类创建索引，boolean result1 = restTemplate.createIndex(Student.class);System.out.println(result1);//将索引放到软件里面boolean results = restTemplate.putMapping(Student.class);}@Testpublic void addDocuments_restTemplate() {Student student = new Student();student.setId("123");student.setName("张三");student.setAddress("北京市海淀区回龙观东大街");student.setAge(18);IndexQuery query = new IndexQuery();query.setObject(student);String result = restTemplate.index(query);System.out.println(result);}@Testpublic void bulk_restTemplate(){List<IndexQuery> list = new ArrayList<>();// IndexQuery多行写法IndexQuery indexQuery = new IndexQuery();indexQuery.setObject(new Student("1", "王五", "北京东城", 12));list.add(indexQuery);// IndexQuery 连缀写法list.add(new IndexQueryBuilder().withObject(new Student("2", "赵六", "北京西城", 13)).build());list.add(new IndexQueryBuilder().withObject(new Student("3", "吴七", "北京昌平", 14)).build());restTemplate.bulkIndex(list);}@Testpublic void deletee_restTemplate() {boolean result = restTemplate.deleteIndex(Student.class);System.out.println(result);}