elasticsearch Java High Level REST 相关操作封装
pox.xml文件添加以下内容
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>6.3.2</version>
</dependency>新建ESHighLevelRestUtil.java
package com;
import java.util.HashMap;
import java.util.Map;
import org.apache.http.HttpHost;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexResponse;
import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.support.replication.ReplicationResponse;
import org.elasticsearch.action.DocWriteResponse;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.rest.RestStatus;
public class ESHighLevelRestUtil {
static RestHighLevelClient client = new RestHighLevelClient(
RestClient.builder(new HttpHost("172.19.12.249", 9200, "http")));
/**
* 验证索引是否存在
*
* @param index
* 索引名称
* @return
* @throws Exception
*/
public boolean indexExists(String index) throws Exception {
GetIndexRequest request = new GetIndexRequest();
request.indices(index);
request.local(false);
request.humanReadable(true);
boolean exists = client.indices().exists(request);
return exists;
}
/**
*
* @param index
* @param indexType
* @param properties
* 结构: {name:{type:text}} {age:{type:integer}}
* @return
* @throws Exception
*/
public boolean indexCreate(String index, String indexType,
Map<String, Object> properties) throws Exception {
if (indexExists(index)) {
return true;
}
CreateIndexRequest request = new CreateIndexRequest(index);
request.settings(Settings.builder().put("index.number_of_shards", 3)
.put("index.number_of_replicas", 2));
Map<String, Object> jsonMap = new HashMap<>();
Map<String, Object> mapping = new HashMap<>();
mapping.put("properties", properties);
jsonMap.put(indexType, mapping);
request.mapping(indexType, jsonMap);
CreateIndexResponse createIndexResponse = client.indices().create(
request);
boolean acknowledged = createIndexResponse.isAcknowledged();
return acknowledged;
}
/**
* 删除索引
*
* @param index
* @return
* @throws Exception
*/
public boolean indexDelete(String index) throws Exception {
try {
DeleteIndexRequest request = new DeleteIndexRequest(index);
DeleteIndexResponse deleteIndexResponse = client.indices().delete(
request);
return deleteIndexResponse.isAcknowledged();
} catch (ElasticsearchException exception) {
if (exception.status() == RestStatus.NOT_FOUND) {
return true;
} else {
return false;
}
}
}
/**
* 创建更新文档
*
* @param index
* @param indexType
* @param documentId
* @param josonStr
* @return
* @throws Exception
*/
public boolean documentCreate(String index, String indexType,
String documentId, String josonStr) throws Exception {
IndexRequest request = new IndexRequest(index, indexType, documentId);
request.source(josonStr, XContentType.JSON);
IndexResponse indexResponse = client.index(request);
if (indexResponse.getResult() == DocWriteResponse.Result.CREATED
|| indexResponse.getResult() == DocWriteResponse.Result.UPDATED) {
return true;
}
ReplicationResponse.ShardInfo shardInfo = indexResponse.getShardInfo();
if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
return true;
}
if (shardInfo.getFailed() > 0) {
for (ReplicationResponse.ShardInfo.Failure failure : shardInfo
.getFailures()) {
throw new Exception(failure.reason());
}
}
return false;
}
/**
* 创建更新索引
*
* @param index
* @param indexType
* @param documentId
* @param map
* @return
* @throws Exception
*/
public boolean documentCreate(String index, String indexType,
String documentId, Map<String, Object> map) throws Exception {
IndexRequest request = new IndexRequest(index, indexType, documentId);
request.source(map);
IndexResponse indexResponse = client.index(request);
if (indexResponse.getResult() == DocWriteResponse.Result.CREATED
|| indexResponse.getResult() == DocWriteResponse.Result.UPDATED) {
return true;
}
ReplicationResponse.ShardInfo shardInfo = indexResponse.getShardInfo();
if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
return true;
}
if (shardInfo.getFailed() > 0) {
for (ReplicationResponse.ShardInfo.Failure failure : shardInfo
.getFailures()) {
throw new Exception(failure.reason());
}
}
return false;
}
/**
* 创建索引
*
* @param index
* @param indexType
* @param josonStr
* @return
* @throws Exception
*/
public String documentCreate(String index, String indexType, String josonStr)
throws Exception {
IndexRequest request = new IndexRequest(index, indexType);
request.source(josonStr, XContentType.JSON);
IndexResponse indexResponse = client.index(request);
String id = indexResponse.getId();
if (indexResponse.getResult() == DocWriteResponse.Result.CREATED
|| indexResponse.getResult() == DocWriteResponse.Result.UPDATED) {
return id;
}
ReplicationResponse.ShardInfo shardInfo = indexResponse.getShardInfo();
if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
return id;
}
if (shardInfo.getFailed() > 0) {
for (ReplicationResponse.ShardInfo.Failure failure : shardInfo
.getFailures()) {
throw new Exception(failure.reason());
}
}
return null;
}
/**
* 创建索引
*
* @param index
* @param indexType
* @param map
* @return
* @throws Exception
*/
public String documentCreate(String index, String indexType,
Map<String, Object> map) throws Exception {
IndexRequest request = new IndexRequest(index, indexType);
request.source(map);
IndexResponse indexResponse = client.index(request);
String id = indexResponse.getId();
if (indexResponse.getResult() == DocWriteResponse.Result.CREATED
|| indexResponse.getResult() == DocWriteResponse.Result.UPDATED) {
return id;
}
ReplicationResponse.ShardInfo shardInfo = indexResponse.getShardInfo();
if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
return id;
}
if (shardInfo.getFailed() > 0) {
for (ReplicationResponse.ShardInfo.Failure failure : shardInfo
.getFailures()) {
throw new Exception(failure.reason());
}
}
return null;
}
public boolean documentDelete(String index, String indexType,
String documentId) throws Exception {
DeleteRequest request = new DeleteRequest(index, indexType, documentId);
DeleteResponse deleteResponse = client.delete(request);
if (deleteResponse.getResult() == DocWriteResponse.Result.NOT_FOUND) {
return true;
}
ReplicationResponse.ShardInfo shardInfo = deleteResponse.getShardInfo();
if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
return true;
}
if (shardInfo.getFailed() > 0) {
for (ReplicationResponse.ShardInfo.Failure failure : shardInfo
.getFailures()) {
throw new Exception(failure.reason());
}
}
return false;
}
}
新建ESHighLevelRestTest.java
package com;
import java.util.HashMap;
import java.util.Map;
import org.apache.http.HttpHost;
import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
public class ESHighLevelRestTest {
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
ESHighLevelRestUtil util = new ESHighLevelRestUtil();
System.out.println(util.indexExists("indextest001"));
Map<String, Object> map = new HashMap<String, Object>();
map.put("name", new HashMap() {
{
put("type", "text");
}
});
map.put("age", new HashMap() {
{
put("type", "double");
}
});
map.put("sex", new HashMap() {
{
put("type", "double");
}
});
map.put("address", new HashMap() {
{
put("type", "text");
}
});
// 创建主题
util.indexCreate("indextest005", "sx", map);
//创建文档1
System.out.println(util.documentCreate("indextest005", "sx",
new HashMap<String,Object>() {
{
put("name", "名称1");
put("age", 18);
put("sex", 10);
put("address", "地址1");
}
}));
//创建更新文档2
System.out.println(util.documentCreate("indextest005", "sx", "1",
new HashMap<String,Object>() {
{
put("name", "名称2");
put("age", 18);
put("sex", 10);
put("address", "地址2");
}
}));
//删除文档
System.out.println(util.documentDelete("indextest005", "sx", "1"));
}
}
参考：https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-overview.html
相互学习，如有不正确的地方欢迎指正
