前言
最近在单位搞日志相关的东西,然后部分日志就存储到了elasticsearch索引库,慢慢发觉索引库用着是真香,写这篇文章的目的就是记录一下关于ElasticsearchRestTemplate
Api
的使用
- 下载及整合ElasticSearch SpringBoot2.3.x整合ElasticSearch
🐳创建索引并推送映射
/**
* 创建索引并推送映射
* @return
*/
@Override
public boolean createIndexAndPushMapping() {
IndexOperations indexOperations = elasticsearchRestTemplate.indexOps(Item.class);
//创建索引
boolean a = indexOperations.create();
if (a){
//生成映射
Document mapping = indexOperations.createMapping();
//推送映射
boolean b = indexOperations.putMapping(mapping);
return b;
}else {
return a;
}
}
🍒删除索引
/**
* 删除索引
* @param index
* @return
*/
@Override
public boolean deleteIndex(String index) {
IndexOperations indexOperations = elasticsearchRestTemplate.indexOps(Item.class);
boolean delete = indexOperations.delete();
return delete;
}
🐳添加或修改文档
/**
* 添加或修改文档
* @param index
* @return
*/
@Override
public boolean addOrUpdate(Item item,String index) {
item.setTime(new Date());
try {
elasticsearchRestTemplate.save(item, IndexCoordinates.of(index));
return true;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
🍒根据id删除文档
/**
* 删除文档
* @param index
* @return
*/
@Override
public boolean delete(String id,String index) {
try {
elasticsearchRestTemplate.delete(id, IndexCoordinates.of(index));
return true;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
🌳根据id查询
/**
* 根据id查询
*
* @param id
* @param index
* @return
*/
@Override
public ItemVO selectAllById(String id, String index) {
IdsQueryBuilder idsQueryBuilder = QueryBuilders.idsQuery();
idsQueryBuilder.addIds(id);
NativeSearchQuery query = new NativeSearchQueryBuilder()
.withQuery(idsQueryBuilder)
.build();
SearchHit<ItemVO> itemSearchHit = elasticsearchRestTemplate.searchOne(query, ItemVO.class, IndexCoordinates.of(index));
ItemVO content = itemSearchHit.getContent();
return content;
}
🐸高亮查询
/**
* 高亮查询
* @param keyword
* @param index
* @return
*/
@Override
public List<ItemVO> searchHighlight(String keyword, String index) {
ArrayList<ItemVO> itemVOS = new ArrayList<>();
MatchQueryBuilder matchQueryBuilder = QueryBuilders.matchQuery("requestBody", keyword);
//高亮
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.field("requestBody");
highlightBuilder.requireFieldMatch(false);//多个高亮关闭
highlightBuilder.preTags("<span style='color:red'>");
highlightBuilder.postTags("</span>");
NativeSearchQuery query = new NativeSearchQueryBuilder()
.withQuery(matchQueryBuilder)
.build();
query.setHighlightQuery(new HighlightQuery(highlightBuilder));
SearchHits<ItemVO> search = elasticsearchRestTemplate.search(query, ItemVO.class, IndexCoordinates.of(index));
for (SearchHit<ItemVO> searchHit : search) {
ItemVO content = searchHit.getContent();
//将高亮的字段取出来
List<String> requestBody = searchHit.getHighlightField("requestBody");
String highText = "";
for (String s : requestBody) {
highText = highText += s;
}
//重新对字段赋值
content.setRequestBody(highText);
itemVOS.add(content);
}
return itemVOS;
}
🍈分页查询
/**
* 分页查询
* @param page
* @param size
* @param index
* @return
*/
@Override
public List<ItemVO> selectByPage(int page, int size,String index) {
List<ItemVO> itemVOS = new ArrayList<>();
try {
NativeSearchQuery query = new NativeSearchQueryBuilder().withPageable(PageRequest.of(page - 1, size))
.build();
SearchHits<ItemVO> search = elasticsearchRestTemplate.search(query, ItemVO.class, IndexCoordinates.of(index));
search.forEach((hits)->itemVOS.add(hits.getContent()));
} catch (Exception e) {
e.printStackTrace();
}
return itemVOS;
}
🌴数据排序
/**
* 排序查询
* @param index
* @return
*/
@Override
public List<ItemVO> selectByTimeDesc(String index) {
List<ItemVO> itemVOS = new ArrayList<>();
try {
NativeSearchQuery query = new NativeSearchQueryBuilder().withSort(SortBuilders.fieldSort("time").order(SortOrder.DESC))
.build();
SearchHits<ItemVO> search = elasticsearchRestTemplate.search(query, ItemVO.class, IndexCoordinates.of(index));
search.forEach((hits)->itemVOS.add(hits.getContent()));
} catch (Exception e) {
e.printStackTrace();
}
return itemVOS;
}
文章来源:https://www.toymoban.com/news/detail-513531.html
🏝️时间区间查询
/**
* 时间区间查询
* @param begin
* @param end
* @param index
* @return
*/
@Override
public List<ItemVO> selectByTimeFromTo(String begin, String end, String index) {
List<ItemVO> itemVOS = new ArrayList<>();
try {
NativeSearchQuery query = new NativeSearchQueryBuilder().withSort(SortBuilders.fieldSort("time").order(SortOrder.DESC))
.withFilter(QueryBuilders.rangeQuery("time").timeZone("+08:00").format("yyyy-MM-dd HH:mm:ss").gt(begin).lt(end))
.build();
SearchHits<ItemVO> search = elasticsearchRestTemplate.search(query, ItemVO.class, IndexCoordinates.of(index));
search.forEach((hits) -> itemVOS.add(hits.getContent()));
} catch (Exception e) {
e.printStackTrace();
}
return itemVOS;
}
文章来源地址https://www.toymoban.com/news/detail-513531.html
🐴多条件查询示例例
public BaseQueryPageVO<List<LogDataVO>> searchApiLogData(LogDataPageDTO logDataPageDTO) throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException {
ArrayList<LogDataDO> logDataDOS = new ArrayList<>();
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
boolQueryBuilder
.filter(QueryBuilders.rangeQuery("time").timeZone("+08:00").format("yyyy-MM-dd HH:mm:ss").gt(logDataPageDTO.getBegin()).lt(logDataPageDTO.getEnd()))
.must(QueryBuilders.matchQuery("requestBody", logDataPageDTO.getKeyword()));
NativeSearchQuery searchQuery = new NativeSearchQueryBuilder()
.withSort(SortBuilders.fieldSort("time").order(SortOrder.DESC))
.withPageable(PageRequest.of(logDataPageDTO.getCurrent()-1,logDataPageDTO.getSize()))
.withQuery(boolQueryBuilder)
.build();
//高亮
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.field("requestBody");
highlightBuilder.requireFieldMatch(false);//多个高亮关闭
highlightBuilder.preTags("<span style='color:red'>");
highlightBuilder.postTags("</span>");
// 返回实际命中数
searchQuery.setTrackTotalHits(true);
searchQuery.setHighlightQuery(new HighlightQuery(highlightBuilder));
SearchHits<LogDataDO> search = elasticsearchRestTemplate.search(searchQuery, LogDataDO.class, IndexCoordinates.of(logDataPageDTO.getIndexName()));
List<SearchHit<LogDataDO>> searchHits = search.getSearchHits();
for (SearchHit<LogDataDO> searchHit : searchHits) {
LogDataDO content = searchHit.getContent();
List<String> requestBody = searchHit.getHighlightField("requestBody");
String highText = "";
for (String s : requestBody) {
highText = highText += s;
}
content.setResultData(null);
content.setRequestBody(highText);
logDataDOS.add(content);
}
BaseQueryPageVO baseQueryPageVO = new BaseQueryPageVO();
baseQueryPageVO.setTotal(search.getTotalHits());
baseQueryPageVO.setSize(Long.valueOf(logDataPageDTO.getSize()));
baseQueryPageVO.setCurrent(Long.valueOf(logDataPageDTO.getCurrent()));
baseQueryPageVO.setTotal(search.getTotalHits());
baseQueryPageVO.setRecords(CopyUtils.do2DtoList(logDataDOS, LogDataVO.class));
return baseQueryPageVO;
}
到了这里,关于SpringBoot中ElasticsearchRestTemplate的使用示例,(增删改查、高亮查询、id查询、分页查询、时间范围查询、多条件查询)的文章就介绍完了。如果您还想了解更多内容,请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章,希望大家以后多多支持TOY模板网!