如何在 AWS CloudSearch 中指定搜索字段（使用 .net SDK）

Question

我有一個域，其中有 2 個可搜索字段（一個文字和一個文本字段），基本上是類別和內容。

如何指定要在字段中使用的特定字段？ 據我所知，它將默認搜索所有可搜索的字段，但這不是我想要的（即，不想查找 Cats 類別並從另一個類別中獲取結果，因為它在內容。）

我正在使用 .Net SDK，並且我一直在瀏覽他們的文檔，但找不到該部分。

謝謝！

Answer 1

進一步挖掘之后，指定字段的方法是使用fields數組字段。

使用.Net SDK ，可以通過以下方式完成：

new SearchRequest { 
   Query = query, 
   QueryOptions = @"{""fields"":[""field_name""]}" 
};

來源： https : //docs.aws.amazon.com/cloudsearch/latest/developerguide/search-api.html#structured-search-syntax

Answer 2

C# 中 Cloudsearch 的示例代碼並不常見，但是你可以試試我寫的這個

public List<AdditionalFields> Search(string query)
    {
        var batch = new List<AdditionalFields>();
        query = query.Trim();
        try
        {
            // Configure the Client that you'll use to make search requests
            string queryUrl = @"http://search-********.cloudsearch.amazonaws.com";
            var awsCredentials = new Amazon.Runtime.BasicAWSCredentials();
            AmazonCloudSearchDomainClient searchClient = new AmazonCloudSearchDomainClient(queryUrl, awsCredentials);

            SearchRequest searchRequest = new SearchRequest();
            searchRequest.Query = query;
            //searchRequest.Facet =
            //searchRequest.QueryOptions.
            searchRequest.Return = "_all_fields";

            SearchResponse searchResponse = searchClient.SearchAsync(searchRequest).Result;

            foreach (var hit in searchResponse.Hits.Hit)
            {
                var fields = new AdditionalFields();
                var searchfields = new Fields();
                searchfields.content = hit.Fields["content"][0].ToString();
                searchfields.directory = hit.Fields["directory"][0].ToString();
                searchfields.resourcename = hit.Fields["resourcename"][0].ToString();
                searchfields.title = hit.Fields["title"][0].ToString();
                fields.abridgedContent = searchfields.content.Replace(searchfields.title, string.Empty);
                searchfields.version = hit.Fields["version"][0].ToString();
                fields.abridgedContent = Abridged(fields.abridgedContent, query);
                searchfields.description = hit.Fields["description"][0].ToString();
                searchfields.resourcename = hit.Fields["resourcename"][0].ToString();
                searchfields.resourcetype = hit.Fields["resourcetype"][0].ToString();
                fields.url = "/bookviewer?bookValue=" + searchfields.resourcename + "&version=" + searchfields.version + "&chapterFolder=" + searchfields.directory + "&firstChapterNo=" + searchfields.description + ".htm";
                fields.fields = searchfields;
                batch.Add(fields);
            }

            // return searchResponse.Status.ToString();
        }
        catch (AmazonCloudSearchDomainException ex)
        {
            var fields = new AdditionalFields();
            fields.error = "ERROR : " + ex.Message;

            batch.Add(fields);

        }
        catch (Exception ex)
        {
            var fields = new AdditionalFields();
            fields.error = "ERROR : " + ex.Message;
            batch.Add(fields);
        }

        return batch;
    }