查询包含嵌套数组Elasticsearch中所有值的文档

// 创建索引
CreateIndexRequest request = new CreateIndexRequest("my_index");
client.indices().create(request, RequestOptions.DEFAULT);

// 定义映射
PutMappingRequest mappingRequest = new PutMappingRequest("my_index");
mappingRequest.source("{\n" +
        "  \"properties\": {\n" +
        "    \"nested_array\": {\n" +
        "      \"type\": \"nested\"\n" +
        "    }\n" +
        "  }\n" +
        "}", XContentType.JSON);
client.indices().putMapping(mappingRequest, RequestOptions.DEFAULT);

// 插入文档
IndexRequest indexRequest = new IndexRequest("my_index");
indexRequest.source("{\n" +
        "  \"nested_array\": [\n" +
        "    {\"value\": \"value1\"},\n" +
        "    {\"value\": \"value2\"}\n" +
        "  ]\n" +
        "}", XContentType.JSON);
client.index(indexRequest, RequestOptions.DEFAULT);

// 查询文档
SearchRequest searchRequest = new SearchRequest("my_index");
SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
NestedQueryBuilder nestedQueryBuilder = QueryBuilders.nestedQuery("nested_array", QueryBuilders.matchAllQuery(), ScoreMode.None);
sourceBuilder.query(nestedQueryBuilder);
searchRequest.source(sourceBuilder);
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);