ElasticSearch之——Java操作ES实例（基于ES-2.3.0）
转载请注明出处：http://blog.csdn.net/l1028386804/article/details/78758691
今天，我们就来看看如何利用Java API来操作ES的数据，这里不讲理论的东西了，大家可以参看其他资料了解，这里直接给出实例代码。好了不多说了，我们直接上代码：
1、获取client句柄
/**
* 获取client句柄
* @return
* @throws Exception
*/
private static Client getClient() throws Exception{
//此处的IP是安装ES所在的主机IP地址
return TransportClient.builder().build().addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("192.168.209.121"), 9300));
}
2、创建索引文件
/**
* 创建索引文件
*/
public static void createIndexFile() throws Exception{
XContentBuilder mapping = XContentFactory.jsonBuilder()
.startObject()
.startObject("settings")
.field("number_of_shards", 1)
.field("number_of_replicas", 0)
.endObject()
.endObject()
.startObject()
.startObject("type_name")
.startObject("properties")
.startObject("type").field("type", "string").field("store", "yes").endObject()
.startObject("eventCount").field("type", "long").field("store", "yes").endObject()
.startObject("eventDate").field("type","date").field("format", "dateOptionalTime").field("store", "yes").endObject()
.startObject("message").field("type","string").field("index", "not_analyzed").field("store", "yes").endObject()
.endObject()
.endObject()
.endObject();
CreateIndexRequestBuilder builder = getClient().admin().indices().prepareCreate("index_name").setSource(mapping);
CreateIndexResponse response = builder.execute().actionGet();
if(response.isAcknowledged()){
System.out.println("创建索引文档成功！");
}else{
System.out.println("创建索引文档失败！");
}
}
3、增加索引文件
/**
* 增加文档
* @throws Exception
*/
public static void addIndexFile() throws Exception{
IndexResponse response = getClient().prepareIndex("index_name_second", "type_name_second", "1")
.setSource( XContentFactory.jsonBuilder().startObject()
.field("type","liuyazhuang")
.field("eventCount", 1)
.field("eventDate", new Date())
.field("message", "my name is liuyazhuang").endObject()).get();
System.out.println("index: " + response.getIndex() + " insert doc id: " + response.getId());
}
4、修改索引文件
/**
* 修改文档方式1
* @throws Exception
*/
public static void updateIndexFile01() throws Exception{
UpdateRequest updateRequest = new UpdateRequest();
updateRequest.index("index_name_second");
updateRequest.type("type_name_second");
updateRequest.id("1");
updateRequest.doc( XContentFactory.jsonBuilder().startObject().field("type", "lyz").endObject());
System.out.println(getClient().update(updateRequest).get());
}
/**
* 修改文档方式2
* @throws Exception
*/
public static void updateIndexFile02() throws Exception{
IndexRequest indexRequest = new IndexRequest("index_name_second", "type_name_second", "3")
.source(XContentFactory.jsonBuilder()
.startObject()
.field("type","liuyazhuang")
.field("eventCount", 1)
.field("eventDate", new Date())
.field("message", "my name is liuyazhuang")
.endObject());
UpdateRequest request = new UpdateRequest("index_name_second", "type_name_second", "3")
.doc(XContentFactory.jsonBuilder().startObject().field("type", "lyz").endObject()).upsert(indexRequest);
System.out.println(getClient().update(request).get());
}
5、查询文件
/**
* 查询文档
* @throws Exception
*/
public static void queryIndexFile() throws Exception{
GetResponse response = getClient().prepareGet("index_name_second", "type_name_second", "1").get();
String source = response.getSource().toString();
long version = response.getVersion();
String indexName = response.getIndex();
String type = response.getType();
String id = response.getId();
System.out.println("source===>>> " + source + ", version====>>> " + version + ", indexName=====>>> " + indexName + ", type====>>> " + type + ", id====>>> " + id);
}
6、删除文件
/**
* 删除文档
* @throws Exception
*/
public static void deleteIndexFile() throws Exception{
DeleteResponse response = getClient().prepareDelete("index_name_second", "type_name_second", "1").get();
System.out.println(response.isFound()); //文档存在返回true, 不存在返回false
}
7、删除索引
/**
* 删除索引
* @throws Exception
*/
public static void deleteIndex() throws Exception{
DeleteIndexRequest delete = new DeleteIndexRequest("index_name_second");
System.out.println(getClient().admin().indices().delete(delete));
}
8、完整的操作类
package com.lyz.es.test;
import java.net.InetAddress;
import java.util.Date;
import org.elasticsearch.action.admin.indices.create.CreateIndexRequestBuilder;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
/**
* 索引文件的工具类
* @author liuyazhuang
*
*/
public class IndexFileUtils {
/**
* 获取client句柄
* @return
* @throws Exception
*/
private static Client getClient() throws Exception{
//此处的IP是安装ES所在的主机IP地址
return TransportClient.builder().build().addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("192.168.209.121"), 9300));
}
/**
* 创建索引文件
*/
public static void createIndexFile() throws Exception{
XContentBuilder mapping = XContentFactory.jsonBuilder()
.startObject()
.startObject("settings")
.field("number_of_shards", 1)
.field("number_of_replicas", 0)
.endObject()
.endObject()
.startObject()
.startObject("type_name")
.startObject("properties")
.startObject("type").field("type", "string").field("store", "yes").endObject()
.startObject("eventCount").field("type", "long").field("store", "yes").endObject()
.startObject("eventDate").field("type","date").field("format", "dateOptionalTime").field("store", "yes").endObject()
.startObject("message").field("type","string").field("index", "not_analyzed").field("store", "yes").endObject()
.endObject()
.endObject()
.endObject();
CreateIndexRequestBuilder builder = getClient().admin().indices().prepareCreate("index_name").setSource(mapping);
CreateIndexResponse response = builder.execute().actionGet();
if(response.isAcknowledged()){
System.out.println("创建索引文档成功！");
}else{
System.out.println("创建索引文档失败！");
}
}
/**
* 增加文档
* @throws Exception
*/
public static void addIndexFile() throws Exception{
IndexResponse response = getClient().prepareIndex("index_name_second", "type_name_second", "1")
.setSource( XContentFactory.jsonBuilder().startObject()
.field("type","liuyazhuang")
.field("eventCount", 1)
.field("eventDate", new Date())
.field("message", "my name is liuyazhuang").endObject()).get();
System.out.println("index: " + response.getIndex() + " insert doc id: " + response.getId());
}
/**
* 修改文档方式1
* @throws Exception
*/
public static void updateIndexFile01() throws Exception{
UpdateRequest updateRequest = new UpdateRequest();
updateRequest.index("index_name_second");
updateRequest.type("type_name_second");
updateRequest.id("1");
updateRequest.doc( XContentFactory.jsonBuilder().startObject().field("type", "lyz").endObject());
System.out.println(getClient().update(updateRequest).get());
}
/**
* 修改文档方式2
* @throws Exception
*/
public static void updateIndexFile02() throws Exception{
IndexRequest indexRequest = new IndexRequest("index_name_second", "type_name_second", "3")
.source(XContentFactory.jsonBuilder()
.startObject()
.field("type","liuyazhuang")
.field("eventCount", 1)
.field("eventDate", new Date())
.field("message", "my name is liuyazhuang")
.endObject());
UpdateRequest request = new UpdateRequest("index_name_second", "type_name_second", "3")
.doc(XContentFactory.jsonBuilder().startObject().field("type", "lyz").endObject()).upsert(indexRequest);
System.out.println(getClient().update(request).get());
}
/**
* 查询文档
* @throws Exception
*/
public static void queryIndexFile() throws Exception{
GetResponse response = getClient().prepareGet("index_name_second", "type_name_second", "1").get();
String source = response.getSource().toString();
long version = response.getVersion();
String indexName = response.getIndex();
String type = response.getType();
String id = response.getId();
System.out.println("source===>>> " + source + ", version====>>> " + version + ", indexName=====>>> " + indexName + ", type====>>> " + type + ", id====>>> " + id);
}
/**
* 删除文档
* @throws Exception
*/
public static void deleteIndexFile() throws Exception{
DeleteResponse response = getClient().prepareDelete("index_name_second", "type_name_second", "1").get();
System.out.println(response.isFound()); //文档存在返回true, 不存在返回false
}
/**
* 删除索引
* @throws Exception
*/
public static void deleteIndex() throws Exception{
DeleteIndexRequest delete = new DeleteIndexRequest("index_name_second");
System.out.println(getClient().admin().indices().delete(delete));
}
}
9、测试类
package com.lyz.es.test;
import org.junit.Test;
/**
* 测试es
* @author liuyazhuang
*
*/
public class IndexFileTest {
@Test
public void testCreateIndexFile() throws Exception{
IndexFileUtils.createIndexFile();
}
@Test
public void testAddIndexFile() throws Exception{
IndexFileUtils.addIndexFile();
}
@Test
public void testUpdateIndexFile01() throws Exception{
IndexFileUtils.updateIndexFile01();
}
@Test
public void testQueryIndexFile() throws Exception{
IndexFileUtils.queryIndexFile();
}
@Test
public void testDeleteIndexFile() throws Exception{
IndexFileUtils.deleteIndexFile();
}
@Test
public void testDeleteIndex() throws Exception{
IndexFileUtils.deleteIndex();
}
}
10、pom.xml
4.0.0
com.lyz
es
1.0.0-SNAPSHOT
jar
org.elasticsearch
elasticsearch
2.3.0
es
${project.build.directory}/classes
src/main/resources
true
**/*.xml
**/*.properties
${project.build.directory}/classes/META-INF/spring
src/main/resources/spring
true
spring-context.xml
org.eclipse.m2e
lifecycle-mapping
1.0.0
org.apache.maven.plugins
maven-dependency-plugin
[2.0,)
copy-dependencies
org.apache.maven.plugins
maven-jar-plugin
target/classes/
com.alibaba.dubbo.container.Main
false
true
lib/
.
org.apache.maven.plugins
maven-dependency-plugin
copy-dependencies
package
copy-dependencies
jar
jar
false
${project.build.directory}/lib
11、温馨提示
大家可以到链接http://download.csdn.net/download/l1028386804/10152051下载Java API操作ElasticSearch的完整实例。