es java 增删改查_java操作elasticsearch实现基本的增删改查操作

要操作 Elasticsearch 进行增删改查操作，需要使用 Elasticsearch 的 Java 客户端库。以下是一些基本操作的示例代码：

1. 添加文档：

IndexRequest request = new IndexRequest("索引名称");
request.id("文档id");
request.source("字段1", "值1", "字段2", "值2", ...);
IndexResponse response = client.index(request, RequestOptions.DEFAULT);

2. 更新文档：

UpdateRequest request = new UpdateRequest("索引名称", "文档id");
request.doc("字段1", "新值1", "字段2", "新值2", ...);
UpdateResponse response = client.update(request, RequestOptions.DEFAULT);

3. 删除文档：

DeleteRequest request = new DeleteRequest("索引名称", "文档id");
DeleteResponse response = client.delete(request, RequestOptions.DEFAULT);

4. 查询文档：

SearchRequest request = new SearchRequest("索引名称");
SearchSourceBuilder builder = new SearchSourceBuilder();
builder.query(QueryBuilders.matchQuery("字段名", "查询关键字"));
request.source(builder);
SearchResponse response = client.search(request, RequestOptions.DEFAULT);

以上示例代码仅为演示基本操作，实际使用中还需考虑性能、错误处理等问题。