For example, how to integrate elasticsearch in spring web project?
(Refer to the github project: https://github.com/spring-projects/spring-data-elasticsearch)
1. Introduce spring-elasticsearch.xml into spring.xml
<!-- spring-elasticsearch.xml import --> <import resource="classpath:spring-elasticsearch.xml"/>
Second, the TransportClientFactoryBean extension class and spring-elasticsearch.xml configuration
TransportClientFactoryBean.java custom extension class
public class TransportClientFactoryBean implements FactoryBean<TransportClient>, InitializingBean, DisposableBean {
private static final Logger logger = Logger.getLogger(TransportClientFactoryBean.class);
private String clusterNodes = "127.0.0.1:9300";//You can use commas to separate multiple node addresses
private String clusterName = "elasticsearch";
private Boolean clientTransportSniff = true;
private Boolean clientIgnoreClusterName = Boolean.FALSE;
private String clientPingTimeout = "5s";
private String clientNodesSamplerInterval = "5s";
private TransportClient client;
private Properties properties;
static final String COLON = ":";//分号
static final String COMMA = ",";//Comma
@Override
public void destroy() throws Exception {
try {
logger.info("Closing elasticSearch client");
if (client != null) {
client.close();
}
} catch (final Exception e) {
logger.error("Error closing ElasticSearch client: ", e);
}
}
@Override
public TransportClient getObject() throws Exception {
return client;
}
@Override
public Class<TransportClient> getObjectType() {
return TransportClient.class;
}
@Override
public boolean isSingleton() {
return false;
}
@Override
public void afterPropertiesSet() throws Exception {
buildClient();
}
protected void buildClient() throws Exception {
client = new PreBuiltTransportClient(settings());
Assert.hasText(clusterNodes, "[Assertion failed] clusterNodes settings missing.");
for (String clusterNode : StringUtils.split(clusterNodes, COMMA)) {
String hostName = StringUtils.substringBeforeLast(clusterNode, COLON);
String port = StringUtils.substringAfterLast(clusterNode, COLON);
Assert.hasText(hostName, "[Assertion failed] missing host name in 'clusterNodes'");
Assert.hasText(port, "[Assertion failed] missing port in 'clusterNodes'");
logger.info("adding transport node : " + clusterNode);
client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(hostName), Integer.valueOf(port)));
}
client.connectedNodes();
}
private Settings settings() {
if (properties != null) {
return Settings.builder().put(properties).build();
}
return Settings.builder()
.put("cluster.name", clusterName)
.put("client.transport.sniff", clientTransportSniff)
.put("client.transport.ignore_cluster_name", clientIgnoreClusterName)
.put("client.transport.ping_timeout", clientPingTimeout)
.put("client.transport.nodes_sampler_interval", clientNodesSamplerInterval)
.build();
}
public void setClusterNodes(String clusterNodes) {
this.clusterNodes = clusterNodes;
}
public void setClusterName(String clusterName) {
this.clusterName = clusterName;
}
public void setClientTransportSniff(Boolean clientTransportSniff) {
this.clientTransportSniff = clientTransportSniff;
}
public String getClientNodesSamplerInterval() {
return clientNodesSamplerInterval;
}
public void setClientNodesSamplerInterval(String clientNodesSamplerInterval) {
this.clientNodesSamplerInterval = clientNodesSamplerInterval;
}
public String getClientPingTimeout() {
return clientPingTimeout;
}
public void setClientPingTimeout(String clientPingTimeout) {
this.clientPingTimeout = clientPingTimeout;
}
public Boolean getClientIgnoreClusterName() {
return clientIgnoreClusterName;
}
public void setClientIgnoreClusterName(Boolean clientIgnoreClusterName) {
this.clientIgnoreClusterName = clientIgnoreClusterName;
}
public void setProperties(Properties properties) {
this.properties = properties;
}
}
Three, elasticsearch.properties property configuration
elasticsearch.clusterName=myES elasticsearch.clusterNodes=192.168.1.140:9300
Fourth, pom.xml configuration
<!-- es5.5.2 jar -->
<dependency>
<groupid>org.elasticsearch.client</groupid>
<artifactid>transport</artifactid>
<version>5.5.2</version>
</dependency>
5. How to use
@Resource can be injected into TransportClient tranportClient
Six, (optional) elasticsearch basic CRUD packaging class
ElasticSearchBaseDao.java
/**
* elasticsearch underlying CRUD encapsulation dao
* @author jelly
*/
@Component
public class ElasticSearchBaseDao {
@Resource
private TransportClient transportClient ;
/**
* index an object
* @param index index name
* @param type index type
* @param id The document id can be null, the put method needs to specify the document id, the post does not need to specify the id, the server automatically generates
* @param o
* @return String
* @author jelly
*
*/
public <t> String index(String index,String type,String id ,T o){
IndexResponse res=transportClient.prepareIndex(index, type, id)
.setSource(JSON.toJSONString(o), XContentType.JSON).get();
return res.toString();
}
/**
* Query an object by id
* @param index
* @param type
* @param id
* @param entityClass
* @return T
* @author jelly
*
*/
public <t> T findById(String index,String type,String id, Class<t> entityClass){
GetResponse res= transportClient.prepareGet(index, type, id).execute().actionGet();
return JSON.parseObject(res.getSourceAsString(), entityClass) ;
}
/**
* delete an object by id
* @param index
* @param type
* @param id
* @return String
* @author jelly
*
*/
public String deleteById(String index,String type,String id ){
DeleteResponse res = transportClient.prepareDelete(index, type, id).execute().actionGet();
return res.toString();
}
/**
* update an object
* @param index
* @param type
* @param id
* @param o
* @return
* @return String
* @author jelly
*
*/
public <t> String update(String index,String type, String id , T o){
UpdateResponse res= transportClient.prepareUpdate(index, type, id)
.setDoc(JSON.toJSONString(o), XContentType.JSON).get();
return res.toString();
}
/**
* query all
* @param index
* @param type
* @param entityClass
* @return List<t>
* @author jelly
*
*/
public <t> List<t> findAll(String index,String type,Class<t> entityClass){
SearchRequestBuilder srb=transportClient.prepareSearch(index).setTypes(type);
SearchResponse sr=srb.setQuery(QueryBuilders.matchAllQuery())
.execute()
.actionGet();
SearchHits hits=sr.getHits();
List<t> list =new ArrayList<t>();
for(SearchHit hit:hits){
T o= JSON.parseObject(hit.getSourceAsString(), entityClass);
list.add(o);
}
return list ;
}
/**
* Query all pages
* @param index
* @param type
* @param page
* @param entityClass
* @return List<t>
* @author jelly
*
*/
public <t> List<t> findAllByPage(String index,String type,Page page ,Class<t> entityClass){
SearchRequestBuilder srb=transportClient.prepareSearch(index).setTypes(type);
SearchResponse sr=srb.setQuery(QueryBuilders.matchAllQuery())
.setFrom(page.getStartNum())
.setSize(page.getPageSize())
.execute()
.actionGet();
SearchHits hits=sr.getHits();
List<t> list =new ArrayList<t>();
for(SearchHit hit:hits){
T o= JSON.parseObject(hit.getSourceAsString(), entityClass);
list.add(o);
}
return list ;
}
/**
* Query all pagination sorting
* @param index
* @param type
* @param page
* @param entityClass
* @return
* @return List<t>
* @author jelly
*
*/
public <t> List<t> findAllByPageSort(String index,String type,Page page,Class<t> entityClass){
SearchRequestBuilder srb=transportClient.prepareSearch(index).setTypes(type);
SearchResponse sr=null;
if(page.getSortOrder().equalsIgnoreCase("asc")){//升序
sr=srb.setQuery(QueryBuilders.matchAllQuery())
.addSort(page.getSortName(), SortOrder.ASC)
.setFrom(page.getStartNum())
.setSize(page.getPageSize())
.execute()
.actionGet();
}else {
sr=srb.setQuery(QueryBuilders.matchAllQuery())
.addSort(page.getSortName(), SortOrder.DESC) //降序
.setFrom(page.getStartNum())
.setSize(page.getPageSize())
.execute()
.actionGet();
}
SearchHits hits=sr.getHits();
List<t> list =new ArrayList<t>();
for(SearchHit hit:hits){
T o= JSON.parseObject(hit.getSourceAsString(), entityClass);
list.add(o);
}
return list ;
}
/**
* The query contains the specified column
* @param index
* @param type
* @param page
* @param fields
* @param entityClass
* @return List<t>
* @author jelly
*
*/
public <t> List<t> findIncludeFieldByPage(String index,String type,Page page,String[] fields, Class<t> entityClass){
SearchRequestBuilder srb=transportClient.prepareSearch(index).setTypes(type);
SearchRequestBuilder builder = srb.setQuery(QueryBuilders.matchAllQuery())
.setFrom(page.getStartNum())
.setSize(page.getPageSize())
.setFetchSource(fields, null); // includes excludes
String sortName =page.getSortName();
String sortOrder =page.getSortOrder();
if(sortName!=null && !sortName.equals("")&& sortOrder!=null && !sortOrder.equals("")){
if(sortOrder.equalsIgnoreCase("asc")){
builder.addSort(sortName, SortOrder.ASC);
}else{
builder.addSort(sortName, SortOrder.DESC);
}
}
SearchResponse sr = builder.execute().actionGet();
SearchHits hits=sr.getHits();
List<t> list =new ArrayList<t>();
for(SearchHit hit:hits){
T o= JSON.parseObject(hit.getSourceAsString(), entityClass);
list.add(o);
}
return list ;
}
/**
* The query excludes the specified column
* @param index
* @param type
* @param page
* @param fields
* @param entityClass
* @return List<t>
*/
public <t> List<t> findExcludeFieldByPage(String index,String type,Page page,String[] fields, Class<t> entityClass){
SearchRequestBuilder srb=transportClient.prepareSearch(index).setTypes(type);
SearchRequestBuilder builder = srb.setQuery(QueryBuilders.matchAllQuery())
.setFrom(page.getStartNum())
.setSize(page.getPageSize())
.setFetchSource(null, fields); // includes excludes
String sortName =page.getSortName();
String sortOrder =page.getSortOrder();
if(sortName!=null && !sortName.equals("")&& sortOrder!=null && !sortOrder.equals("")){
if(sortOrder.equalsIgnoreCase("asc")){
builder.addSort(sortName, SortOrder.ASC);
}else{
builder.addSort(sortName, SortOrder.DESC);
}
}
SearchResponse sr = builder.execute().actionGet();
SearchHits hits=sr.getHits();
List<t> list =new ArrayList<t>();
for(SearchHit hit:hits){
T o= JSON.parseObject(hit.getSourceAsString(), entityClass);
list.add(o);
}
return list ;
}
/**
* Keyword search
* @param index
* @param type
* @param page
* @param includes
* @param field
* @param keyword
* @param analyzer
* @param entityClass
* @return List<t>
* @author jelly
*
*/
public <t> List<t> searchByFieldKeyword(String index,String type,Page page ,String[] includes,
String field,String keyword,String analyzer ,Class<t> entityClass) {
SearchRequestBuilder srb=transportClient.prepareSearch(index).setTypes(type);
SearchRequestBuilder builder = srb.setQuery(QueryBuilders.matchQuery(field,keyword)
.analyzer(analyzer))
.setFrom(page.getStartNum())
.setSize(page.getPageSize())
.setFetchSource(includes, null); // includes excludes
SearchResponse sr = builder.execute().actionGet();
SearchHits hits=sr.getHits();
List<t> list =new ArrayList<t>();
for(SearchHit hit:hits){
T o= JSON.parseObject(hit.getSourceAsString(), entityClass);
list.add(o);
}
return list ;
}
}
ok！！