1.依赖
我用的是 springboot 2.2.5.RELEASE 版本，这里只贴出主要依赖：
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<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId></dependency> |
2.配置+测试源码
这里根据elasticsearch服务端的地址进行配置：
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@Configurationpublic class ElasticSearchConfig { @Bean public RestHighLevelClient restHighLevelClient() { RestHighLevelClient client = new RestHighLevelClient( RestClient.builder( new HttpHost("127.0.0.1", 9200, "http") )); return client; }} |
以下是详细的测试代码：
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@SpringBootTestclass EsApiApplicationTests { @Autowired @Qualifier(value = "restHighLevelClient") private RestHighLevelClient client; // 1.创建索引 @Test void createIndex() throws IOException { // 创建请求 CreateIndexRequest request = new CreateIndexRequest("yz_index"); // 执行请求,获取响应 CreateIndexResponse response = client.indices().create(request, RequestOptions.DEFAULT); System.out.println("creatIndex--" + response); } // 2.获取索引,判断是否存在 @Test void getIndex() throws IOException { // 创建请求 GetIndexRequest request = new GetIndexRequest("yz_index"); // 执行请求,获取响应 boolean exists = client.indices().exists(request, RequestOptions.DEFAULT); System.out.println("getIndex--exists--" + exists); } // 3.删除索引 @Test void deleteIndex() throws IOException { // 创建请求 DeleteIndexRequest request = new DeleteIndexRequest("yz_index"); // 执行请求 AcknowledgedResponse response = client.indices().delete(request, RequestOptions.DEFAULT); System.out.println("deleteIndex--" + response); } // 4.添加文档 @Test void addDocument() throws IOException { // 创建对象 User user = new User("Java虚拟机", 30); // 创建索引,即获取索引 IndexRequest indexRequest = new IndexRequest("yz_index"); // 添加规则 /index/_doc/id indexRequest.id("1"); indexRequest.timeout(TimeValue.timeValueSeconds(1)); // 存入对象 indexRequest.source(JSON.toJSONString(user), XContentType.JSON); // 发送请求 IndexResponse response = client.index(indexRequest, RequestOptions.DEFAULT); System.out.println("addDocument--" + response); } // 5.获取文档是否存在 @Test void getDocument() throws IOException { // 创建get请求 GetRequest getRequest = new GetRequest("yz_index", "1"); // 不获取返回的_source的上下文 getRequest.fetchSourceContext(new FetchSourceContext(false)); getRequest.storedFields("_none_"); // 发送请求 boolean exists = client.exists(getRequest, RequestOptions.DEFAULT); System.out.println("addDocument--" + exists); // 6.获取文档信息 if (exists) { // 创建请求 GetRequest getRequest1 = new GetRequest("yz_index", "1"); // 发送请求 GetResponse response = client.get(getRequest1, RequestOptions.DEFAULT); System.out.println("source--" + response.getSource()); System.out.println("getDocument--" + response.getSourceAsString()); } // 7.更新文档信息 if (exists) { // 创建请求 UpdateRequest updateRequest = new UpdateRequest("yz_index", "1"); updateRequest.timeout("1s"); // 修改内容 User user = new User("小米", 10); updateRequest.doc(JSON.toJSONString(user), XContentType.JSON); UpdateResponse response = client.update(updateRequest, RequestOptions.DEFAULT); System.out.println("updateDocument--" + response.status()); } // 8.删除文档信息 if (exists) { // 创建请求 DeleteRequest deleteRequest = new DeleteRequest("yz_index", "1"); deleteRequest.timeout("1s"); // 修改内容 DeleteResponse response = client.delete(deleteRequest, RequestOptions.DEFAULT); System.out.println("deleteDocument--" + response.status()); } } // 9.批量添加文档 @Test void batchAddDocument() throws IOException { // 批量请求 BulkRequest bulkRequest = new BulkRequest(); bulkRequest.timeout("10s"); // 创建对象 ArrayList<User> userArrayList = new ArrayList<>(); userArrayList.add(new User("小米1", 1)); userArrayList.add(new User("小米2", 2)); userArrayList.add(new User("小米3", 3)); userArrayList.add(new User("小米4", 4)); userArrayList.add(new User("小米5", 5)); // 添加请求 for (int i = 0; i < userArrayList.size(); i++) { bulkRequest.add(new IndexRequest("yz_index") .id("" + (i + 2)) .source(JSON.toJSONString(userArrayList.get(i)), XContentType.JSON)); } // 执行请求 BulkResponse response = client.bulk(bulkRequest, RequestOptions.DEFAULT); System.out.println("batchAddDocument--" + response.status()); } // 10.查询 @Test void search() throws IOException { // 创建请求 SearchRequest searchRequest = new SearchRequest("jd_index"); // 构建搜索条件 SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder(); TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", "杜伽");// 精确查询 searchSourceBuilder.query(termQueryBuilder); searchSourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS)); searchRequest.source(searchSourceBuilder); // 执行请求 SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT); // 解析查询结果 System.out.println("search--getHists--" + JSON.toJSONString(response.getHits())); for (SearchHit documentFields : response.getHits()) { System.out.println("search--getHist--" + documentFields.getSourceAsMap()); } }} |
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原文链接：https://blog.csdn.net/weixin_39168541/article/details/119301894
