Elasticsearch的单条插入批量插入及根据条件删除记录的操作转java代码示例

Elasticsearch的部分操作（单条插入批量插入及根据条件删除记录），转java代码的示例如下：

	
	public void writeDataToES(List> dataList, String indexName) {
		// 将数据添加到 bulkProcessor 中
		int i =0;
		int lastOneIndex= dataList.size()-1;
		LOG.info("--the datalist will be added to the ws, and it's size="+dataList.size());
		for (Map rowMap : dataList) {
			IndexRequest sourceRequest = new IndexRequest(indexName);
			sourceRequest.source(rowMap);
			bulkProcessor.add(sourceRequest);
			if(i==lastOneIndex){			
				LOG.info("###success to add the last one source map in batch, it's mapInfo="+rowMap);
			}
			i++;
		}
		bulkProcessor.flush();
	}
	
	
	public void writeToES(Map data, String indexName) throws IOException {
		// 将数据添加到 bulkProcessor 中
		LOG.info("--the datalist will be added to the ws, it's mapInfo="+data);
		IndexRequest sourceRequest = new IndexRequest(indexName);
		sourceRequest.source(data);
		client.index(sourceRequest, RequestOptions.DEFAULT);
	}
	
	//删除指定查询条件的记录.
	public long deleteByTermQuery(String indexName, String termField, String termValue) {
		//参数为索引名，可以不指定，可以一个，可以多个
		DeleteByQueryRequest request = new DeleteByQueryRequest(indexName);
		// 更新时版本冲突
		request.setConflicts("proceed");
		// 设置查询条件，第一个参数是字段名，第二个参数是字段的值
		request.setQuery(new TermQueryBuilder(termField, termValue));
		// 更新最大文档数
		request.setSize(2999);
		// 批次大小
		request.setBatchSize(50);
		// 并行
		request.setSlices(2);
		// 使用滚动参数来控制“搜索上下文”存活的时间
		request.setScroll(Timevalue.timevalueMinutes(10));
		// 超时
		request.setTimeout(Timevalue.timevalueMinutes(2));
		// 刷新索引
		request.setRefresh(true);
		try {
			BulkByScrollResponse response = client.deleteByQuery(request, RequestOptions.DEFAULT);
			return response.getStatus().getUpdated();
		} catch (IOException e) {
			LOG.error("!!!deleteByTermQuery error", e);
		}
		return -1;
	}