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4：elasticsearch服务实现
import java.util.List;
import java.util.Map;
import org.elasticsearch.action.bulk.BulkRequestBuilder;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.delete.DeleteRequestBuilder;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.SearchType;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateRequestBuilder;
import org.elasticsearch.client.Client;
import org.elasticsearch.index.engine.DocumentMissingException;
import org.elasticsearch.index.engine.VersionConflictEngineException;
public class IIndexServiceIml implements IIndexService<SearchBean> {
@Override
public boolean insertOne(SearchBean t) {
// TODO Auto-generated method stub
try {
Client client = ClientHelper.getClient();
IndexRequestBuilder inserter = client.prepareIndex(t.getIndexName(),t.getType(),t.getId());
inserter.setSource(SearchBeanUtil.toInsertMap(t));
inserter.execute().actionGet();
return true;
} catch (Exception e) {
// TODO: handle exception
}
return false;
}
@Override
public boolean insertList(List<SearchBean> lists) {
try {
Client client = ClientHelper.getClient();
BulkRequestBuilder bulk = new BulkRequestBuilder(client);
for (SearchBean b : lists) {
IndexRequestBuilder inserter = client.prepareIndex(b.getIndexName(),
b.getType(),b.getId());
inserter.setSource(SearchBeanUtil.toInsertMap(b));
bulk.add(inserter);
}
BulkResponse actionGet = bulk.execute().actionGet();
if (actionGet.hasFailures()) {
return false;
}
return true;
} catch (Exception e) {
}
return false;
}
@Override
public boolean deleteOne(SearchBean t) {
Client client = ClientHelper.getClient();
try {
DeleteRequestBuilder deleter = client.prepareDelete(t.getIndexName(), t.getType(),t.getId());
DeleteResponse actionGet = deleter.execute().actionGet();
if (!actionGet.isFound()) {
return true;
}
} catch (Exception e) {
return false;
}
return true;
}
@Override
public boolean deleteList(List<SearchBean> lists) {
try {
Client client = ClientHelper.getClient();
BulkRequestBuilder bulk = new BulkRequestBuilder(client);
for (SearchBean t : lists) {
DeleteRequestBuilder deleter = client.prepareDelete(t.getIndexName(), t.getType(),t.getId());
bulk.add(deleter);
}
BulkResponse actionGet = bulk.execute().actionGet();
if (actionGet.hasFailures()) {
return false;
}
return true;
} catch (Exception e) {
}
return false;
}
@Override
public boolean updateOne(SearchBean t) {
Client client = ClientHelper.getClient();
try {
client.prepareUpdate(t.getIndexName(),t.getType(), t.getId())
.setId( t.getId()).setDoc(SearchBeanUtil.toUpdateMap(t)).execute()
.actionGet();
return true;
} catch (DocumentMissingException e) {// 文档不存在，直接返回true
e.printStackTrace();
return true;
} catch (VersionConflictEngineException e) {
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
@Override
public boolean udateList(List<SearchBean> lists) {
try {
Client client = ClientHelper.getClient();
BulkRequestBuilder bulk = new BulkRequestBuilder(client);
for (SearchBean t : lists) {
UpdateRequestBuilder update=client.prepareUpdate(t.getIndexName(),t.getType(), t.getId())
.setId( t.getId()).setDoc(SearchBeanUtil.toUpdateMap(t));
bulk.add(update);
}
BulkResponse actionGet = bulk.execute().actionGet();
if (actionGet.hasFailures()) {
return false;
}
return true;
} catch (Exception e) {
}
return false;
}
@Override
public List search(String jsonQuery, String indexName, int page, int size) {
try {
int start = page < 1 ? 0 : (page - 1) * size;
Client client = ClientHelper.getClient();
SearchResponse response = client
.prepareSearch(indexName)
.setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
.setQuery(jsonQuery).setFrom(start).setSize(size)
.setExplain(false).execute().actionGet();
return SearchBeanUtil.buildSearchSource(response.getHits());
} catch (Exception e) {
}
return null;
}
@Override
public List searchField(String jsonQuery, String indexName, int page,int size, String... fields) {
try {
int start = page < 1 ? 0 : (page - 1) * size;
Client client = ClientHelper.getClient();
SearchRequestBuilder request = client
.prepareSearch(indexName)
.setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
.setQuery(jsonQuery).setFrom(start).setSize(size);
for (String field : fields) {
request.addField(field);
}
SearchResponse response = request.setExplain(false).execute().actionGet();
return SearchBeanUtil.buildSearchFields(response.getHits());
} catch (Exception e) {
}
return null;
}
@Override
public boolean checkDocExisted(String indexName,String type,String id) {
try {
Client client = ClientHelper.getClient();
GetResponse response = client
.prepareGet(indexName,type,id)
.execute().actionGet();
boolean result = response.isExists();
return result;
} catch (Exception e) {
return false;
}
}
@Override
public boolean updateFields(String id, String indexName, String type,String script, Map<String, Object> maps) {
boolean fa=false;
try {
Client client = ClientHelper.getClient();
UpdateRequest resuest=new UpdateRequest(indexName, type,id);
resuest.script(script);
resuest.scriptParams(maps);
client.update(resuest).actionGet();
fa=true;
} catch (Exception e) {
fa=false;
}
return fa;
}
}
public class SearchBean {
public SearchBean(String indexName, String type, String id) {
super();
this.indexName = indexName;
this.type = type;
this.id = id;
}
private String indexName;//索引名称
private String type;//索引类型
private String id;//索引ID
private String name;
private String password;
public String getIndexName() {
return indexName;
}
public void setIndexName(String indexName) {
this.indexName = indexName;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
public class SearchBeanUtil {
/**
* 根据filedName获取get方法
*
* @param fildeName
* @return
* @throws Exception
*/
private static String getMethodName(String fildeName) throws Exception {
byte[] items = fildeName.getBytes();
if (((char) items[0]) >= ‘a‘ && ((char) items[0]) <= ‘z‘) {
items[0] = (byte) ((char) items[0] - 32);
}
return new String(items);
}
public static Map<String, Object> toUpdateMap(SearchBean bean) {
Class<?> type = bean.getClass();
Map<String, Object> returnMap = new HashMap<String, Object>();
try {
Field[] fields = type.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
Field filed = fields[i];
String filedName = filed.getName();
if (!filedName.equals("serialVersionUID")) {
Method m = type.getMethod("get" + getMethodName(filedName));
Object val = m.invoke(bean);
if (val != null) {
returnMap.put(filedName, val);
}
}
}
} catch (Exception e) {
}
return returnMap;
}
public static Map<String,Object> toInsertMap(SearchBean bean){
Map<String, Object> returnMap = new HashMap<String, Object>();
try {
Class<?> type = bean.getClass();
BeanInfo beanInfo = Introspector.getBeanInfo(type);
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
for (int i = 0; i < propertyDescriptors.length; i++) {
PropertyDescriptor descriptor = propertyDescriptors[i];
String propertyName = descriptor.getName();
if (!propertyName.equals("class")) {
Method readMethod = descriptor.getReadMethod();
Object result = readMethod.invoke(bean);
returnMap.put(propertyName, result);
}
}
} catch (Exception e) {
// TODO: handle exception
}
return returnMap;
}
public static List buildSearchSource(SearchHits result){
List<Map<String, Object>> lists=new ArrayList<>();
for(SearchHit hit:result.getHits()){
lists.add(hit.getSource());
}
return lists;
}
public static List buildSearchFields(SearchHits result){
List<Map<String, Object>> lists=new ArrayList<>();
for(SearchHit hit:result.getHits()){
Map<String, Object> map=new HashMap<>();
for(String key:hit.getFields().keySet()){
map.put(key, hit.getFields().get(key));
}
lists.add(map);
}
return lists;
}
public static void main(String[] args){
SearchBean bean =new SearchBean("index", "user", "sss");
Map<String, Object> returnMap = toUpdateMap(bean);
System.out.println(returnMap);
}
}本文出自 “陈砚羲” 博客，请务必保留此出处http://chenyanxi.blog.51cto.com/4599355/1575265
4：elasticsearch服务实现
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