一、SpringBoot整合ElasticSearch
ElasticSearch官网
1.找到原生的依赖
2.找对象
一定要保证我们导入的依赖和我们的ES版本一致
、
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.2.5.RELEASE
com.jak
jak-es-api
0.0.1-SNAPSHOT
jak-es-api
Demo project for Spring Boot
1.8
7.4.2
com.alibaba
fastjson
1.2.62
org.springframework.boot
spring-boot-starter-data-elasticsearch
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-devtools
runtime
true
org.springframework.boot
spring-boot-configuration-processor
true
org.projectlombok
lombok
true
org.springframework.boot
spring-boot-starter-test
test
org.junit.vintage
junit-vintage-engine
org.springframework.boot
spring-boot-maven-plugin
org.springframework.boot
spring-boot-configuration-processor
org.projectlombok
lombok
@Configuration //xml
public class ElasticSearchConfig {
@Bean
public RestHighLevelClient restHighLevelClient() {
HttpHost http = new HttpHost("192.168.56.10", 9200, "http");
RestClientBuilder builder = RestClient.builder(http);
RestHighLevelClient client = new RestHighLevelClient(builder);
return client;
}
}
@SpringBootTest
class JakEsApiApplicationTests {
// 面向对象来操作
@Autowired
@Qualifier("restHighLevelClient")
private RestHighLevelClient client;
// 测试索引的创建 Request put jak
@Test
void contextLoads() throws IOException {
// 1.创建索引请求
CreateIndexRequest request = new CreateIndexRequest("jak_index");
// 2.客户端执行请求 IndicesClient，请求后获得响应
CreateIndexResponse createIndexResponse = client.indices().create(request, RequestOptions.DEFAULT);
System.out.println(createIndexResponse);
}
// 测试获取索引,判断其是否存在
@Test
void testExistIndex() throws IOException {
GetIndexRequest request = new GetIndexRequest("jak_index");
boolean exists = client.indices().exists(request, RequestOptions.DEFAULT);
System.out.println(exists);
}
// 测试删除索引
@Test
void testDeleteIndex() throws IOException {
DeleteIndexRequest request = new DeleteIndexRequest("jak");
//删除
AcknowledgedResponse delete = client.indices().delete(request, RequestOptions.DEFAULT);
System.out.println(delete.isAcknowledged());
}
//测试添加文档
@Test
void testAddDocument() throws IOException {
// 创建对象
User user = new User("jak", 18);
// 创建请求
IndexRequest request = new IndexRequest("jak_index");
//规则 put /jak_index/_doc/1
request.id("1");
request.timeout(TimeValue.timeValueSeconds(1));
request.timeout("1s");
//将我们的数据放入请求 json
request.source(JSON.toJSONString(user), XContentType.JSON);
// 客户端发送请求，获取响应的结果
IndexResponse indexResponse = client.index(request, RequestOptions.DEFAULT);
System.out.println(indexResponse.toString());
System.out.println(indexResponse.status());
}
// 获取文档，判断是否存在 get /index/doc/1
@Test
void testIsExists() throws IOException {
GetRequest getRequest = new GetRequest("jak_index", "1");
// 不获取返回的_source的上下文了
getRequest.fetchSourceContext(new FetchSourceContext(false));
getRequest.storedFields("_none_");
boolean exists = client.exists(getRequest, RequestOptions.DEFAULT);
System.out.println(exists);
}
// 获得文档的信息
@Test
void testGetDocument() throws IOException {
GetRequest getRequest = new GetRequest("jak_index", "1");
GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
System.out.println(getResponse.getSourceAsString()); //打印文档的内容
System.out.println(getResponse); // 返回的全部内容和命令是一样的
}
// 更新文档的信息
@Test
void testUpdateRequest() throws IOException {
UpdateRequest updateRequest = new UpdateRequest("jak_index", "1");
updateRequest.timeout("1s");
User user = new User("jak", 25);
updateRequest.doc(JSON.toJSONString(user), XContentType.JSON);
UpdateResponse updateResponse = client.update(updateRequest, RequestOptions.DEFAULT);
System.out.println(updateResponse.status());
}
// 删除文档记录
@Test
void testDeleteRequest() throws IOException {
DeleteRequest request = new DeleteRequest("jak_index", "1");
request.timeout("1s");
DeleteResponse deleteResponse = client.delete(request, RequestOptions.DEFAULT);
System.out.println(deleteResponse.status());
}
// 特殊的，真的项目一般都会批量插入数据
@Test
void testBulkRequest() throws IOException {
BulkRequest bulkRequest = new BulkRequest();
bulkRequest.timeout("10s");
ArrayList userList = new ArrayList();
userList.add(new User("jak1", 1));
userList.add(new User("jak2", 1));
userList.add(new User("jak3", 1));
userList.add(new User("jak4", 1));
// 批处理请求
for (int i = 0; i < userList.size(); i++) {
// 批量更新和批量删除，就在这里修改对应的请求就可以了
bulkRequest.add(new IndexRequest("jak_index").id("" + (i + 1)).source(JSON.toJSONString(userList.get(i)), XContentType.JSON));
}
BulkResponse bulkResponse = client.bulk(bulkRequest, RequestOptions.DEFAULT);
System.out.println(bulkResponse.hasFailures()); // 是否失败，返回false 代表成功
}
// 查询
/**
* SearchRequest 搜索请求
* SearchSourceBuilder 条件构造
* HighlightBuilder 构建高亮
* TermQueryBuilder 精确查询
* MatchAllQueryBuilder
* xxx QueryBuilder对应我们刚才看到的命令
* @throws IOException
*/
@Test
void testSearch() throws IOException {
SearchRequest searchRequest = new SearchRequest("jak_index");
//构建搜索条件
SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
//查询条件，我们可以使用QueryBuilders工具来实现
//QueryBuilders.termQuery 精确
//QueryBuilers.matchAllQuery() 匹配所有
TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("name", "jak1");
MatchAllQueryBuilder matchAllQueryBuilder = QueryBuilders.matchAllQuery();
sourceBuilder.query(termQueryBuilder);
sourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));
searchRequest.source(sourceBuilder);
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
System.out.println(JSON.toJSONString(searchResponse.getHits()));
System.out.println("**************************************************");
for (SearchHit documentFields : searchResponse.getHits().getHits()) {
System.out.println(documentFields.getSourceAsMap());
}
}
}
ElasticSearch: http://192.168.56.10:9200/
Kibana: http://192.168.56.10:5601/
gitee源码，视频教程
