这是我的索引：
[
'index' => 'proof',
'body' => [
'settings' => [
'analysis' => [
'tokenizer' => [
'ngram_tokenizer' => [
'type' => 'nGram',
'min_gram' => 1,
'max_gram' => 20,
'token_chars' => ['letter', 'digit'],
],
],
'analyzer' => [
'ngram_tokenizer_analyzer' => [
'type' => 'custom',
'tokenizer' => 'ngram_tokenizer',
'filter' => ['lowercase'],
]
]
]
],
'mappings' => [
'proof_page' => [
'properties' => [
'content' => [
'type' => 'multi_field',
'path' => 'just_name',
'fields' => [
'content' => [
'type' => 'string',
'analyzer' => 'ngram_tokenizer_analyzer',
],
'untouched' => [
'type' => 'string'
]
]
],
'proof_name' => [
'type' => 'string',
],
'project_name' => [
'type' => 'string',
],
'page_number' => [
'type' => 'integer',
'index' => 'not_analyzed',
],
'proof_id' => [
'type' => 'string',
'index' => 'not_analyzed',
],
'project_id' => [
'type' => 'string',
'index' => 'not_analyzed',
]
]
]
]
]
]
这是一个示例查询：
[
'index' => 'proof',
'type' => 'proof_page',
'body' => [
'query' => [
'filtered' => [
'query' => [
'match_phrase' => [
'content' => [
'query' => 'Lorem Ipsum is simply dum',
'slop' => 0,
],
],
],
'filter' => [
'term' => [
'proof_id' => '56ebea535f5e8841038b4569',
],
],
],
],
'_source' => false,
'fields' => [
'proof_id',
'proof_name',
'project_id',
'project_name',
'page_number',
],
'highlight' => [
'fields' => [
'content' => [
'type' => 'plain',
'fragment_size' => 100,
'number_of_fragments' => 100,
'fragmenter' => 'simple',
]
]
],
'from' => 0,
'size' => 10,
'sort' => [
'page_number' => [
'order' => 'asc',
]
]
]
]
并假设我的一个与proof_id匹配的文件：56ebea535f5e8841038b4569包含类似的内容：
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s.
我期待看到的结果是返回一个片段，其中突出显示以下内容：
Lorem Ipsum is simply dum
但它没有返回任何匹配，情况也是如此：
Lorem Ipsum is simply du
Lorem Ipsum is simply dumm
但它会返回以下匹配项：
Lorem Ipsum is simply d
Lorem Ipsum is simply dummy
这对我没有意义，因为我可以看到＆＃34; dummy＆＃34;的每个变体。作为矢量术语（ngram足以覆盖所有变化）。
值得指出的是，这只发生在搜索字符串末尾的术语中。例如：
m Ipsum is simply d
em Ipsum is simply d
rem Ipsum is simply d
orem Ipsum is simply d
Lorem Ipsum is simply d
全部按预期突出显示。
非常感谢任何帮助：）
全部谢谢！
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