js中的正则表达式 使用Docker和Elasticsearch搭建全文本搜索引(9)

awaitesConnection.client.bulk({ body: bulkOps })

bulkOps = []

console.log(`Indexed Paragraphs ${i - 499} - ${i}`)

}

}

// Insert remainder of bulk ops array

awaitesConnection.client.bulk({ body: bulkOps })

console.log(`Indexed Paragraphs ${paragraphs.length - (bulkOps.length / 2)} - ${paragraphs.length}nnn`)

}

此函数索引书籍段落，包括作者、书名和段落元数据信息。使用bulk操作插入段落，比分别索引段落效率高很多。

批量bulk索引这些段落可以使本应用运行在低配电脑上（我只有1.7G内存），如果你有高配电脑（大于4G内容），也许不用考虑批量bulk操作。

运行docker-compose up -d --build 和 docker exec gs-api "node" "server/load_data.js" 输出如下：

5. 搜索

Elasticsearch已经灌入100本书籍数据（大约230000段落），本节做一些搜索操作。

5.0 简单http查询

首先，使用:9200/library/_search?q=text:Java&pretty ， 这里使用全文本查询关键字“Java”，输入应该如下：

{

"took": 11,

"timed_out": false,

"_shards": {

"total": 5,

"successful": 5,

"skipped": 0,

"failed": 0

},

"hits": {

"total": 13,

"max_score": 14.259304,

"hits": [

{

"_index": "library",

"_type": "novel",

"_id": "p_GwFWEBaZvLlaAUdQgV",

"_score": 14.259304,

"_source": {

"author": "Charles Darwin",

"title": "On the Origin of Species",

"location": 1080,

"text": "Java, plants of, 375."

}

},

{

"_index": "library",

"_type": "novel",

"_id": "wfKwFWEBaZvLlaAUkjfk",

"_score": 10.186235,

"_source": {

"author": "Edgar Allan Poe",

"title": "The Works of Edgar Allan Poe",

"location": 827,

"text": "After many years spent in foreign travel, I sailed in the year 18-- , from the port of Batavia, in the rich and populous island of Java, on a voyage to the Archipelago of the Sunda islands. I went as passenger--having no other inducement than a kind of nervous restlessness which haunted me as a fiend."

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