java 编写elasticsearch的工具类，用于创建索引，查询，分页查询，高亮查询，删除，批量删除等等

当然可以！下面是一个简单的Java工具类，用于与Elasticsearch进行索引的创建、查询、分页查询、高亮查询、删除和批量删除等操作：

import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortBuilders;
import org.elasticsearch.search.sort.SortOrder;

import java.io.IOException;

public class ElasticsearchUtils {
    private RestHighLevelClient client;

    public ElasticsearchUtils(RestHighLevelClient client) {
        this.client = client;
    }

    public void createIndex(String indexName, String documentId, String jsonString) throws IOException {
        IndexRequest request = new IndexRequest(indexName).id(documentId).source(jsonString);
        client.index(request, RequestOptions.DEFAULT);
    }

    public SearchResponse search(String indexName, String field, String keyword, int from, int size) throws IOException {
        SearchRequest request = new SearchRequest(indexName);
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchQuery(field, keyword));
        sourceBuilder.from(from);
        sourceBuilder.size(size);
        request.source(sourceBuilder);
        return client.search(request, RequestOptions.DEFAULT);
    }

    public SearchResponse searchWithHighlight(String indexName, String field, String keyword, int from, int size) throws IOException {
        SearchRequest request = new SearchRequest(indexName);
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchQuery(field, keyword));
        sourceBuilder.from(from);
        sourceBuilder.size(size);
        HighlightBuilder highlightBuilder = new HighlightBuilder();
        highlightBuilder.field(field);
        highlightBuilder.requireFieldMatch(false);
        highlightBuilder.preTags("<span style=\"color:red\">");
        highlightBuilder.postTags("</span>");
        sourceBuilder.highlighter(highlightBuilder);
        request.source(sourceBuilder);
        return client.search(request, RequestOptions.DEFAULT);
    }

    public SearchResponse searchWithSort(String indexName, String field, SortOrder sortOrder, int from, int size) throws IOException {
        SearchRequest request = new SearchRequest(indexName);
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.sort(SortBuilders.fieldSort(field).order(sortOrder));
        sourceBuilder.from(from);
        sourceBuilder.size(size);
        request.source(sourceBuilder);
        return client.search(request, RequestOptions.DEFAULT);
    }

    public void deleteDocument(String indexName, String documentId) throws IOException {
        DeleteRequest request = new DeleteRequest(indexName).id(documentId);
        client.delete(request, RequestOptions.DEFAULT);
    }

    public void bulkDeleteDocuments(String indexName, String... documentIds) throws IOException {
        BulkRequest request = new BulkRequest();
        for (String documentId : documentIds) {
            request.add(new DeleteRequest(indexName).id(documentId));
        }
        client.bulk(request, RequestOptions.DEFAULT);
    }
}

你可以通过该工具类的方法来进行索引的创建、查询、分页查询、高亮查询、删除和批量删除操作。记得在使用该工具类之前，你需要先创建一个 `RestHighLevelClient` 实例并传入构造方法中。希望这可以帮到你！如果有任何问题，请随时提问。