我有以下json:
metadata: {
authors: [
],
links: [
{
href: "http://www.latimes.com/opinion/readersreact/la-le-1028-wednesday-meat-cancer-20151028-story.html#navtype=outfit",
value: "Why hot dogs and bacon aren't as dangerous as cigarettes"
},
{
href: "http://www.latimes.com/opinion/readersreact/la-le-1028-wednesday-porter-ranch-lausd-20151028-story.html#navtype=outfit",
value: "LAUSD school in Porter Ranch shows the importance of parent involvement"
},
{
href: "http://www.latimes.com/opinion/readersreact/la-le-1028-wednesday-billboards-20151028-story.html#navtype=outfit",
value: "Maine and Vermont show L.A. what life is like without billboards"
},
{
href: "http://www.latimes.com/opinion/readersreact/la-le-1028-wednesday-broad-beach-20151028-story.html#navtype=outfit",
value: "Malibu beach-front homeowners, meet King Canute"
}
]
},
我只想在elasticsearch中搜索metadata.links.value:
requestBuilder.setQuery(QueryBuilders.matchQuery("metadata.links.value", "Malibu"));
但是不幸的是，这是行不通的。输入值时，我得到0次点击。
我究竟做错了什么？
更新:
这是我完整的代码
public List<ArticleExtraction> search(String searchQuery, SearchProvider searchProvider) {
TransportClient client = searchProvider.getClient();
Map<String, String> query = new HashMap<>();
ArrayList<String> singleQuery = new ArrayList<>();
if (searchQuery.length() > 0 && searchQuery.contains(":")) {
String[] queries = searchQuery.split(",");
for (String q : queries) {
String[] jsonQuery = q.split(":");
query.put(jsonQuery[0], jsonQuery[1]);
}
} else {
String[] queries = searchQuery.split(",");
for (String q : queries) {
singleQuery.add(q);
}
}
SearchRequestBuilder requestBuilder = client.prepareSearch("crawlbot")
.setTypes("item")
.setSize(100);
for (Map.Entry<String, String> e : query.entrySet()) {
requestBuilder.setQuery(QueryBuilders.matchQuery(e.getKey(), e.getValue()));
}
for (String q : singleQuery) {
requestBuilder.setQuery(QueryBuilders.queryStringQuery(q));
}
SearchResponse response = requestBuilder.execute().actionGet();
List<ArticleExtraction> articles = new ArrayList<>();
SearchHit[] hits = response.getHits().getHits();
for (SearchHit hit : hits) {
String sourceAsString = hit.getSourceAsString();
if (sourceAsString != null) {
JsonObject json = new JsonParser().parse(sourceAsString).getAsJsonObject();
if (json.has("article")) {
Gson gson = new Gson();
articles.add(gson.fromJson(json.get("article"), ArticleExtraction.class));
}
}
}
return articles;
说明:
searchQuery的输入可能类似于:
metadata.links.value:malibu
或者，如果它是一个查询:malibu
我做了一些代码，以便两个查询都可以被接受
映射(如果变大，可以抱歉)
mappings: {
item: {
properties: {
article: {
properties: {
description: {
type: "string"
},
description_html: {
type: "string"
},
entities: {
properties: {
count: {
type: "long"
},
meta: {
type: "object"
},
name: {
type: "string"
},
type: {
type: "string"
}
}
},
favicon_url: {
type: "string"
},
images: {
properties: {
colors: {
properties: {
color: {
type: "long"
}
}
},
entropy: {
type: "double"
},
height: {
type: "long"
},
url: {
type: "string"
},
width: {
type: "long"
}
}
},
keywords: {
properties: {
label: {
type: "string"
},
score: {
type: "double"
}
}
},
language: {
type: "string"
},
metadata: {
properties: {
authors: {
properties: {
name: {
type: "string"
}
}
},
links: {
properties: {
href: {
type: "string"
},
value: {
type: "string"
}
}
},
twitter: {
type: "string"
}
}
},
provider_display: {
type: "string"
},
provider_name: {
type: "string"
},
provider_url: {
type: "string"
},
published: {
type: "string"
},
published_long: {
type: "long"
},
summary: {
type: "string"
},
title: {
type: "string"
},
url: {
type: "string"
}
}
},
id: {
properties: {
_inc: {
type: "long"
},
_machine: {
type: "long"
},
_new: {
type: "boolean"
},
_time: {
type: "long"
}
}
},
job: {
properties: {
api: {
type: "long"
},
crawl_depth: {
type: "long"
},
max_pages: {
type: "long"
},
name: {
type: "string"
},
status: {
type: "long"
},
url: {
type: "string"
},
userid: {
type: "long"
}
}
},
query: {
properties: {
match: {
properties: {
name: {
type: "string"
}
}
}
}
}
}
}
},
最佳答案
元数据包含在文章根对象中。
因此，您的查询应构造为:QueryBuilders.matchQuery("article.metadata.links.value", "Malibu");