elasticsearch5.x的java实现搜索

elasticsearch5.x的java实现,本次使用的是maven工程,后面附上源码下载地址

注意:分页时如果用的from，size，那么当数据量大时，查询时会超过默认的最大数量，应该修改默认的最大数量.

 http://localhost:9200/indexdb/_settings/

put

 { "index" : { "max_result_window" : 1000000}}

1.pom.xml

这里特别需要注意下，在加入了x-pack后，需要相应的jar包，而这个jar包在官方的maven rep的仓库中也没有这个jar，这个jar包在elastic公司自己的maven仓库上。所以建议先下载除去红色框之外的的jar包(将红框部分的注释)，下载完后引用elastic的公司的maven仓库地址，然后下载x-pack-tansport.jar包。下载这jar包会非常的慢，如果想求快可以配个国外vpn，然后在浏览器上输入那个仓库的地址去下载。

2.log4j2.properties的配置

appender.console.type = Consoleappender.console.name = consoleappender.console.layout.type = PatternLayout rootLogger.level = inforootLogger.appenderRef.console.ref = console

 

3.代码的实现

import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import java.net.InetAddress;import java.net.UnknownHostException;import java.util.Map;import org.elasticsearch.action.search.SearchResponse;import org.elasticsearch.action.search.SearchType;import org.elasticsearch.client.transport.TransportClient;import org.elasticsearch.common.settings.Settings;import org.elasticsearch.common.text.Text;import org.elasticsearch.common.transport.InetSocketTransportAddress;import org.elasticsearch.common.unit.TimeValue;import org.elasticsearch.index.query.BoolQueryBuilder;import org.elasticsearch.index.query.QueryBuilder;import org.elasticsearch.index.query.QueryBuilders;import org.elasticsearch.search.SearchHit;import org.elasticsearch.search.SearchHits;import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;import org.elasticsearch.search.sort.SortBuilder;import org.elasticsearch.search.sort.SortBuilders;import org.elasticsearch.search.sort.SortOrder;import org.elasticsearch.transport.client.PreBuiltTransportClient;import com.alibaba.fastjson.JSONArray;import com.alibaba.fastjson.JSONObject;import com.luohao.helper.DataConvertHelper;import com.luohao.helper.StringUtils;import org.elasticsearch.xpack.client.PreBuiltXPackTransportClient;@RestController@RequestMapping(value = "/es")public class EsController {private Logger logger = LoggerFactory.getLogger(EsController.class);@RequestMapping(value = "/search.ashx", method = RequestMethod.POST)public JSONObject queryEsearch(HttpServletRequest req, HttpServletResponse resp) throws UnknownHostException {Map<String, Object> where = DataConvertHelper.getRequestParams(req);Integer curr = Integer.valueOf(where.get("curr").toString());JSONObject result = new JSONObject();//1.设置集群Settings settings = Settings.builder().put("cluster.name", "elasticsearch") // 本地固定的集群名称.put("xpack.security.transport.ssl.enabled", false) // 设置xpack的ssl模块不可用.put("xpack.security.user", "elastic:changeme") // 登录用户和密码，不然不能连接到elasticsearch.put("client.transport.sniff", true) // 自动去发现新加入集群的机器.build();//2.获取client，如果加入了x-pack安全框架，则PreBuiltXPackTransportClient必须换成x-packjar包中的TransportClient client = new PreBuiltXPackTransportClient(settings).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("124.225.222.53"), 9300));// 查询条件QueryBuilder matchQuery = QueryBuilders.multiMatchQuery(where.get("resourcename").toString(), "resourcename"); // 设置搜索条件,模糊搜BoolQueryBuilder must = QueryBuilders.boolQuery().must(matchQuery);if (!StringUtils.IsEmptyOrNull(where.get("stage_gid"))) {QueryBuilder matchQueryStage = QueryBuilders.matchPhraseQuery("stage_gid", where.get("stage_gid")); // 精准搜must.must(matchQueryStage);}if (!StringUtils.IsEmptyOrNull(where.get("subject_value"))) {QueryBuilder matchQuerySubject = QueryBuilders.matchPhraseQuery("subject_value", where.get("subject_value"));must.must(matchQuerySubject);}if (!StringUtils.IsEmptyOrNull(where.get("book_version"))) {QueryBuilder matchQueryBook = QueryBuilders.matchPhraseQuery("book_version", where.get("book_version"));must.must(matchQueryBook);}if (!StringUtils.IsEmptyOrNull(where.get("text_book_gid"))) {QueryBuilder matchQueryText = QueryBuilders.matchPhraseQuery("text_book_gid", where.get("text_book_gid"));must.must(matchQueryText);}if (!StringUtils.IsEmptyOrNull(where.get("type_value"))) {QueryBuilder matchQueryType = QueryBuilders.matchPhraseQuery("type_value", where.get("type_value"));must.must(matchQueryType);}// 排序SortBuilder sortBuilder = SortBuilders.fieldSort("viewnum").order(SortOrder.DESC);// 提交时间排序HighlightBuilder hiBuilder = new HighlightBuilder(); // 设置高亮hiBuilder.preTags("<font style='color:red;'>");hiBuilder.postTags("</font>");hiBuilder.field("resourcename");// 若要匹配多个高亮字段，则只用在后面加.field("字段的名称")//3.去索引库搜索数据SearchResponse response = client.prepareSearch("indexdb") // 需要搜索的索引库.setTypes("tab") // 搜索的类型(相当于数据库中的表),这里如果不设置就搜索这个索引库下所有的类型，.setQuery(must) // 搜索的条件.addSort(sortBuilder) // 设置排序.highlighter(hiBuilder) // 设置高亮.setSearchType(SearchType.DFS_QUERY_THEN_FETCH) // 设置搜索类型，各个不同的类型决定搜索所用的时间.setFrom((curr-1)*10) // 从多少开始搜，相当于pageIndex.setSize(10) // 搜索结果集的总数，相当于pageSize.execute().actionGet();//4.获取查询结果集SearchHits searchHits = response.getHits();//5.处理数据得到我们想要的数据JSONArray array = new JSONArray();for (SearchHit hit : searchHits) {String sourceAsString = hit.getSourceAsString();JSONObject parseObject = JSONObject.parseObject(sourceAsString);if (!StringUtils.IsEmptyOrNull(hit.getHighlightFields().get("resourcename"))) {Text[] text = hit.getHighlightFields().get("resourcename").getFragments();parseObject.put("resourcename", text[0].string());}/*if (!StringUtils.IsEmptyOrNull(hit.getHighlightFields().get("masterial"))) {Text[] wrap = hit.getHighlightFields().get("masterial").getFragments();parseObject.put("masterial", wrap[0].string());}*/array.add(parseObject);}if(searchHits.getHits().length == 0) {result.put("data", array);result.put("total", 0);} else {result.put("data", array);result.put("total", searchHits.getTotalHits());result.put("totalpage", (searchHits.getTotalHits() + 10 -1) /10);}return result;}}

源码下载地址:http://download.csdn.net/detail/lh2420124680/9905288