Elasticsearch5.x创建索引(Java)
2017-04-27 10:15 猎手家园 阅读(2454) 评论(0) 编辑 收藏 举报索引创建代码使用官方给的示例代码,我把它在java项目里实现了一遍。
1、创建索引
/** * Java创建Index */ public void CreateIndex() { int i = 0; List<IndexDomain> list = getIndexList(); for (IndexDomain indexDomain : list) { if (indexExists(indexDomain.getIndex())) { continue; } // create indexDomain, setting, put mapping adminClient.prepareCreate(indexDomain.getIndex()) .setSettings(Settings.builder() .put("indexDomain.number_of_shards", indexDomain.getNumber_of_shards()) .put("indexDomain.number_of_replicas", indexDomain.getNumber_of_replicas()) ) .addMapping(indexDomain.getType(), indexDomain.getFieldsJson()) .get(); i++; } System.out.println("IndexDomain creation success! create " + i + " IndexDomain"); }
2、附一些其它小方法:
2.1 集群初始化
private Client client; private IndicesAdminClient adminClient; /** * 构造方法 单例 */ public Elasticsearch() { try { init(); } catch (Exception e) { System.out.println("init() exception!"); e.printStackTrace(); } adminClient = client.admin().indices(); } /** * 集群配置初始化方法 * * @throws Exception */ private void init() throws Exception { // 读取配置文件中数据 Properties properties = readElasticsearchConfig(); String clusterName = properties.getProperty("clusterName"); String[] inetAddresses = properties.getProperty("hosts").split(","); Settings settings = Settings.builder().put("cluster.name", clusterName).build(); client = new PreBuiltTransportClient(settings); for (int i = 0; i < inetAddresses.length; i++) { String[] tmpArray = inetAddresses[i].split(":"); String ip = tmpArray[0]; int port = Integer.valueOf(tmpArray[1]); client = ((TransportClient) client).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(ip), port)); } }
2.2 读取ES配置信息
/** * 读取ES配置信息 * * @return */ public Properties readElasticsearchConfig() { Properties properties = new Properties(); try { InputStream is = this.getClass().getClassLoader().getResourceAsStream("elasticsearch.properties"); properties.load(new InputStreamReader(is, "UTF-8")); } catch (IOException e) { System.out.println("readEsConfig exception!"); e.printStackTrace(); } return properties; }
elasticsearch.properties
hosts: 192.168.33.5:9300,192.168.33.50:9300
clusterName: my-es-analyze
2.3 读取json配置文件
/** * 读取json配置文件 * * @return JSONArray * @throws IOException */ public JSONArray readJosnFile() throws IOException { InputStream is = this.getClass().getClassLoader().getResourceAsStream("index.json"); BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8")); StringBuffer sb = new StringBuffer(); String tmp = null; while ((tmp = br.readLine()) != null) { sb.append(tmp); } JSONArray result = JSONArray.parseArray(sb.toString()); return result; }
index.json
[ { "index": "caixiao", "type": "compensate", "number_of_shards": 2, "number_of_replicas": 1, "fieldsSource": { "compensate": { "properties": { "name": { "type": "string" }, "message": { "type": "string" },"createtime": { "type": "date" } } } } } ]
2.4 判断集群中索引是否存在
/** * 判断集群中{Index}是否存在 * * @param index * @return 存在(true)、不存在(false) */ public boolean indexExists(String index) { IndicesExistsRequest request = new IndicesExistsRequest(index); IndicesExistsResponse response = adminClient.exists(request).actionGet(); if (response.isExists()) { return true; } return false; }
2.5 创建索引实体类
/** * 获取要创建的index列表 * * @return List<IndexDomain> */ public List<IndexDomain> getIndexList() { List<IndexDomain> result = new ArrayList<IndexDomain>(); JSONArray jsonArray = null; try { jsonArray = readJosnFile(); } catch (IOException e) { System.out.println("readJsonFile exception!"); e.printStackTrace(); } if (jsonArray == null || jsonArray.size() == 0) { return null; } for (int i = 0; i < jsonArray.size(); i++) { JSONObject jsonObject = jsonArray.getJSONObject(i); IndexDomain indexDomainObject = new IndexDomain(); String index = jsonObject.getString("index"); String type = jsonObject.getString("type"); Integer number_of_shards = jsonObject.getInteger("number_of_shards"); Integer number_of_replicas = jsonObject.getInteger("number_of_replicas"); String fieldsSource = jsonObject.get("fieldsSource").toString(); indexDomainObject.setIndex(index); indexDomainObject.setType(type); indexDomainObject.setFieldsJson(fieldsSource); indexDomainObject.setNumber_of_shards(number_of_shards); indexDomainObject.setNumber_of_replicas(number_of_replicas); result.add(indexDomainObject); } return result; }
2.6 索引实体类
public class IndexDomain { private String index; //索引名 private String type; //type表名 private Integer number_of_shards; //分片数 private Integer number_of_replicas; //备份数 private String fieldsJson; //字段类型 public String getIndex() { return index; } public void setIndex(String index) { this.index = index; } public String getType() { return type; } public void setType(String type) { this.type = type; } public String getFieldsJson() { return fieldsJson; } public void setFieldsJson(String fieldsJson) { this.fieldsJson = fieldsJson; } public Integer getNumber_of_shards() { return number_of_shards; } public void setNumber_of_shards(Integer number_of_shards) { this.number_of_shards = number_of_shards; } public Integer getNumber_of_replicas() { return number_of_replicas; } public void setNumber_of_replicas(Integer number_of_replicas) { this.number_of_replicas = number_of_replicas; } }
2.7 log4j2.properties
appender.console.type = Console appender.console.name = console appender.console.layout.type = PatternLayout rootLogger.level = info rootLogger.appenderRef.console.ref = console
2.8 pom文件依赖
<properties> <elasticsearch.version>5.3.0</elasticsearch.version> <log4j.version>2.8.2</log4j.version> <fastjson.version>1.2.31</fastjson.version> </properties> <dependencies> <!-- Elasticsearch --> <dependency> <groupId>org.elasticsearch.client</groupId> <artifactId>transport</artifactId> <version>${elasticsearch.version}</version> </dependency> <!-- Log4j --> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-api</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>${log4j.version}</version> </dependency> <!-- Alibaba Json --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>${fastjson.version}</version> </dependency> </dependencies>
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