【ElasticSearch】Scroll滚动查询
REST API
Java Client
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
boolQueryBuilder.must(QueryBuilders.termQuery("enable", 1));
final Scroll scroll = new Scroll(TimeValue.timeValueMinutes(10L));
SearchRequest searchRequest = new SearchRequest("myindex");
searchRequest.scroll(scroll);
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(boolQueryBuilder);
searchSourceBuilder.size(200);
searchRequest.source(searchSourceBuilder);
log.error("DSL:" + searchSourceBuilder.toString());
SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
String scrollId = searchResponse.getScrollId();
SearchHit[] searchHits = searchResponse.getHits().getHits();
if (ArrayUtil.isNotEmpty(searchHits)) {
for (SearchHit searchHit : searchHits) {
System.out.println(searchHit.getId());
}
}
while (searchHits != null && searchHits.length > 0) {
SearchScrollRequest scrollRequest = new SearchScrollRequest(scrollId);
scrollRequest.scroll(scroll);
searchResponse = restHighLevelClient.scroll(scrollRequest, RequestOptions.DEFAULT);
scrollId = searchResponse.getScrollId();
searchHits = searchResponse.getHits().getHits();
if (ArrayUtil.isNotEmpty(searchHits)) {
for (SearchHit searchHit : searchHits) {
System.out.println(searchHit.getId());
}
}
}
ClearScrollRequest clearScrollRequest = new ClearScrollRequest();
clearScrollRequest.addScrollId(scrollId);
ClearScrollResponse clearScrollResponse = restHighLevelClient.clearScroll(clearScrollRequest, RequestOptions.DEFAULT);
boolean succeeded = clearScrollResponse.isSucceeded();
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