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插件作用: 用于做搜索提示,如搜索 ’中‘ 时, 提示’中国‘,’中华‘,’中央‘等以’中‘开头的词。
安装: plugin -url https://github.com/downloads/spinscale/elasticsearch-suggest-plugin/elasticsearch-suggest-0.0.4-0.19.0.zip -install suggest
安装时,需要注意ES版本与插件版本的一致性。
编程示例:
//通过索引字段field及索引index中获取size个以keyword开头的提示单词。
public List<String> findSuggestions(String field, String keyword,
Integer size, String... indices) throws Exception {
List<String> suggests = null;
suggests = new SuggestRequestBuilder(getClient()).setIndices(indices)
.field(field).term(keyword).size(size).execute().actionGet()
.getSuggestions();
closeClient();
return suggests;
}
调用时, 如 List<String> suggestwords = findSuggestions("username", "刘", 5, "userIndex");
即从索引userIndex中的username字段找5个以刘开头的名字。 |
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