如何在elasticsearch中使用Unicode字符进行搜索？

我已经将MySQL列索引到elasticsearch，并且此列有一些AR/EN/RO语言值。如何使用unicode字符串在这些索引内搜索？如何在elasticsearch中使用Unicode字符进行搜索？

$hosts = ['localhost:9200'];    
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build(); 

$body = '{ "query": { 
"filtered": { 
    "query": { 
    "match_all": {} 
    }, 
    "filter": { 
    "bool": { 
     "must": [ 
     {"query": {"wildcard": {"text": {"value": "*'.$term.'*"}}}}, 
     {"query": {"wildcard": {"group": {"value": "hotels_cities"}}}} 
     ] 
    } 
    } 
} }}'; 



$params['index'] = 'my_custom_index_name'; 
$params['type'] = 'translator_translations'; 
$params['body'] = $body; 

$results = $client->search($params);

输出命中为零。

- 有一种叫做分析器的东西，但是没有关于如何在PHP中使用它的信息。

来源

2017-07-25 Khaled Ali

我想我找到了如何在Elasticsearch中索引unicode语言字符的答案，希望这对任何人都有用。

首先你要设置你的索引名

二设置有过滤和语言分析新的语言设置，就像这样：

$client = ClientBuilder::create()  // Instantiate a new ClientBuilder 
      ->setHosts(['localhost:9200'])  // Set the hosts 
      ->build(); 

$lang = 'el'; // Greek in my case 

$param['index'] = 'test_' . $lang; // index name 

// uncomment this line if you want to delete an existing index 
// $response = $client->indices()->delete($param); 

$body = '{ 
    "settings": { 
    "analysis": { 
     "filter": { 
     "greek_stop": { 
      "type":  "stop", 
      "stopwords": "_greek_" 
     }, 
     "greek_lowercase": { 
      "type":  "lowercase", 
      "language": "greek" 
     }, 
     "greek_keywords": { 
      "type":  "keyword_marker", 
      "keywords": ["παράδειγμα"] 
     }, 
     "greek_stemmer": { 
      "type":  "stemmer", 
      "language": "greek" 
     } 
     }, 
     "analyzer": { 
     "greek": { 
      "tokenizer": "standard", 
      "filter": [ 
      "greek_lowercase", 
      "greek_stop", 
      "greek_keywords", 
      "greek_stemmer" 
      ] 
     } 
     } 
    } 
    } 
}'; 

$param['body'] = $body; // store the JSON body as a parameter in the main array 

$response = $client->indices()->create($param);

然后开始用希腊字符索引您的值

来源

2017-07-31 09:42:17

如何在elasticsearch中使用Unicode字符进行搜索？

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