最近学习了一下elasticsearch使用，网上的资料又很少，真是一个头两个大。好歹最后终于了解了。留个笔记做日后查询。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
|
package com.gooddeep.dev.elasticsearch.commons.dao; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.elasticsearch.action.ActionFuture; import org.elasticsearch.action.admin.cluster.health.ClusterHealthRequest; import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse; import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.client.Client; import org.elasticsearch.cluster.health.ClusterHealthStatus; import org.elasticsearch.common.text.Text; import org.elasticsearch.index.query.BoolQueryBuilder; import org.elasticsearch.index.query.QueryBuilders; import org.elasticsearch.search.SearchHit; import org.elasticsearch.search.highlight.HighlightBuilder; import org.elasticsearch.search.highlight.HighlightBuilder.Field; import org.elasticsearch.search.sort.FieldSortBuilder; import org.elasticsearch.search.sort.SortOrder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageImpl; import org.springframework.data.domain.PageRequest; import org.springframework.data.domain.Pageable; import org.springframework.data.elasticsearch.core.ElasticsearchTemplate; import org.springframework.data.elasticsearch.core.SearchResultMapper; import org.springframework.data.elasticsearch.core.query.Criteria; import org.springframework.data.elasticsearch.core.query.CriteriaQuery; import org.springframework.data.elasticsearch.core.query.DeleteQuery; import org.springframework.data.elasticsearch.core.query.IndexQuery; import org.springframework.data.elasticsearch.core.query.IndexQueryBuilder; import org.springframework.data.elasticsearch.core.query.NativeSearchQueryBuilder; import org.springframework.data.elasticsearch.core.query.SearchQuery; import org.springframework.data.elasticsearch.core.query.StringQuery; import org.springframework.stereotype.Component; import com.gooddeep.dev.core.helper.PropertyHelper; import com.gooddeep.dev.core.helper.UuidHelper; import com.gooddeep.dev.core.model.BasePage; import com.gooddeep.dev.elasticsearch.commons.model.EsBaseBean; import com.gooddeep.dev.elasticsearch.commons.service.EsBaseService; @Component("esBaseDao") public abstract class EsBaseDaoImpl<T> implements EsBaseDao<T> { private Logger logger = LoggerFactory.getLogger(EsBaseService.class); @Autowired private ElasticsearchTemplate elasticsearchTemplate; @Autowired private Client esClient; /** * 插入或等新，需要有id，id需要自己生成 * * @param tList * @return */ public boolean insertOrUpdate(List<T> tList) { List<IndexQuery> queries = new ArrayList<IndexQuery>(); for (T t : tList) { String id = ((EsBaseBean) t).getId(); if (id == null) { id = UuidHelper.getRandomUUID(); ((EsBaseBean) t).setId(id); } IndexQuery indexQuery = new IndexQueryBuilder().withId(id).withObject(t).build(); queries.add(indexQuery); } elasticsearchTemplate.bulkIndex(queries); return true; } /** * 插入或更新 * * @param t * @return */ public boolean insertOrUpdate(T t) { String id = ((EsBaseBean) t).getId(); if (id == null) { id = UuidHelper.getRandomUUID(); ((EsBaseBean) t).setId(id); } try { IndexQuery indexQuery = new IndexQueryBuilder().withId(id).withObject(t).build(); elasticsearchTemplate.index(indexQuery); return true; } catch (Exception e) { logger.error("insert or update user info error.", e); return false; } } /** * 删除 * * @param id * @return */ public boolean deleteById(String id) { try { elasticsearchTemplate.delete(getEntityClass(), id); return true; } catch (Exception e) { logger.error("delete " + getEntityClass() + " by id " + id + " error.", e); return false; } } /** * 删除ids * @param idList * @return */ @Override public boolean deleteByIds(List<String> idList) { try { CriteriaQuery criteriaQuery = new CriteriaQuery(new Criteria()); criteriaQuery.setIds(idList); elasticsearchTemplate.delete(criteriaQuery, getEntityClass()); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 根据条件查询 * @param filedContentMap 不能为null * @return */ public boolean deleteByQuery(Map<String,Object> filedContentMap) { try { DeleteQuery dq = new DeleteQuery(); BoolQueryBuilder qb=QueryBuilders. boolQuery(); if(filedContentMap!=null) for (String key : filedContentMap.keySet()) {//字段查询 qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key))); } dq.setQuery(qb);; elasticsearchTemplate.delete(dq, getEntityClass());; return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 检查健康状态 * * @return */ public boolean ping() { try { ActionFuture<ClusterHealthResponse> health = esClient.admin() .cluster().health(new ClusterHealthRequest()); ClusterHealthStatus status = health.actionGet().getStatus(); if (status.value() == ClusterHealthStatus.RED.value()) { throw new RuntimeException( "elasticsearch cluster health status is red."); } return true; } catch (Exception e) { logger.error("ping elasticsearch error.", e); return false; } } /** * 条件查询 * * @param searchfields * 查询字段 * @param filedContentMap * 字段和查询内容 * @param sortField * 排序 字段 * @param order * 排序 * @param from * @param size * @return */ @Override public BasePage<T> queryPage(Map<String,Object> filedContentMap, final List<String> heightFields, String sortField, SortOrder order, BasePage<T>basePage) { Field[] hfields=new Field[0]; if(heightFields!=null) { hfields = new Field[heightFields.size()]; for (int i = 0; i < heightFields.size(); i++) { hfields[i] = new HighlightBuilder.Field(heightFields.get(i)).preTags("<em style='color:red'>").postTags("</em>").fragmentSize(250); } } NativeSearchQueryBuilder nsb = new NativeSearchQueryBuilder().withHighlightFields(hfields);//高亮字段 if (sortField != null && order != null)//排序 nsb.withSort(new FieldSortBuilder(sortField).ignoreUnmapped(true).order(order)); if (basePage != null)//分页 nsb.withPageable(new PageRequest(basePage.getPageNo(), basePage.getPageSize())); BoolQueryBuilder qb=QueryBuilders. boolQuery(); for (String key : filedContentMap.keySet()) {//字段查询 qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key))); } //userKey=78e48b85e94911e0d285f4eec990d556 //fa6e9c5bb24a21807c59e5fd3b609e12 nsb.withQuery(qb); SearchQuery searchQuery = nsb.build();//查询建立 Page<T> page = null; if (heightFields!=null&&heightFields.size() > 0) {//如果设置高亮 page = elasticsearchTemplate.queryForPage(searchQuery, getEntityClass(), new SearchResultMapper() { @SuppressWarnings("unchecked") @Override public <T> Page<T> mapResults(SearchResponse response,Class<T> clazz, Pageable pageable) { List<T> chunk = new ArrayList<T>(); for (SearchHit searchHit : response.getHits()) { if (response.getHits().getHits().length <= 0) { return null; } Map<String, Object> entityMap = searchHit.getSource(); for (String highName : heightFields) { Text text[]=searchHit.getHighlightFields().get(highName).fragments(); if(text.length>0) { String highValue = searchHit.getHighlightFields().get(highName).fragments()[0].toString(); entityMap.put(highName, highValue); } } chunk.add((T) PropertyHelper.getFansheObj( getEntityClass(), entityMap)); } if (chunk.size() > 0) { return new PageImpl<T>((List<T>) chunk); } return new PageImpl<T>(new ArrayList<T>()); } }); } else//如果不设置高亮 { logger.info("#################"+qb.toString()); page = elasticsearchTemplate.queryForPage(searchQuery,getEntityClass()); } // List<T> ts = page.getContent(); basePage.setTotalRecord(page.getTotalElements()); basePage.setResults(page.getContent()); return basePage; } @Override public List<T> queryList(Map<String, Object> filedContentMap,final List<String> heightFields, String sortField, SortOrder order) { Field[] hfields=new Field[0]; if(heightFields!=null) { hfields = new Field[heightFields.size()]; for (int i = 0; i < heightFields.size(); i++) { //String o="{\"abc\" : \"[abc]\"}"; hfields[i] = new HighlightBuilder.Field(heightFields.get(i)).preTags("<em>").postTags("</em>").fragmentSize(250); } } NativeSearchQueryBuilder nsb = new NativeSearchQueryBuilder().withHighlightFields(hfields);//高亮字段 if (sortField != null && order != null)//排序 nsb.withSort(new FieldSortBuilder(sortField).ignoreUnmapped(true).order(order)); BoolQueryBuilder qb=QueryBuilders. boolQuery(); for (String key : filedContentMap.keySet()) {//字段查询 qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key))); } nsb.withQuery(qb); SearchQuery searchQuery = nsb.build();//查询建立 Page<T> page = null; if (heightFields!=null&&heightFields.size() > 0) {//如果设置高亮 page = elasticsearchTemplate.queryForPage(searchQuery, getEntityClass(), new SearchResultMapper() { @SuppressWarnings("unchecked") @Override public <T> Page<T> mapResults(SearchResponse response,Class<T> clazz, Pageable pageable) { List<T> chunk = new ArrayList<T>(); for (SearchHit searchHit : response.getHits()) { if (response.getHits().getHits().length <= 0) { return null; } Map<String, Object> entityMap = searchHit.getSource(); for (String highName : heightFields) { String highValue = searchHit.getHighlightFields().get(highName).fragments()[0].toString(); entityMap.put(highName, highValue); } chunk.add((T) PropertyHelper.getFansheObj(getEntityClass(), entityMap)); } if (chunk.size() > 0) { return new PageImpl<T>((List<T>) chunk); } return null; } }); } else//如果不设置高亮 page = elasticsearchTemplate.queryForPage(searchQuery,getEntityClass()); return page.getContent(); } /** * 本类查询 * * @param id * @return */ public T queryById(String id) { StringQuery stringQuery = new StringQuery("id=" + id); T t = elasticsearchTemplate.queryForObject(stringQuery, getEntityClass()); return t; } public ElasticsearchTemplate getElasticsearchTemplate() { return elasticsearchTemplate; } public Client getEsClient() { return esClient; } /** * 得到类型 * * @return */ public abstract Class<T> getEntityClass(); /** * 添加各自类的影射 */ public abstract void putClassMapping(); } |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/u013378306/article/details/52185063
