Solr 6.6.0不区分大小写的查询不起作用

Question

Solr 6.6.0 Case Insensitive Query Not Working. I had tried all other option/answer available on internet.

I had tired with,

<tokenizer class="solr.LowerCaseTokenizerFactory"/> 

but its not working.

I had tired with,

<filter class="solr.LowerCaseFilterFactory"/>

but its not working.

I had tired many different way, but none working.

ie I want same result searching with title_s:iPhone and title_s:iphone.

I am not sure what would cause problem.

Answer 1

If case insensitive search was not working in a Solr release, you would get much more noise than just one stack overflow question.

Let's use this question to illustrate the approach everyone should follow for basic Solr usage :

1) Refer to the documentation - Solr has a good free online documentation. Specifically describing how to configure the schema.xml and the various aspects of it [1]. From there you can learn that is quite simple to configure a field to be case insensitive :

 <field name="title" type="text_case_insensitive" indexed="true" stored="true"/> <fieldType name="text_case_insensitive" class="solr.TextField" positionIncrementGap="100"> <analyzer type="index"> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.LowerCaseFilterFactory"/> </analyzer> <analyzer type="query"> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.LowerCaseFilterFactory"/> </analyzer> </fieldType> 

NB if you had a previous configuration in the schema for the title field, you need to re-index

[1] https://lucene.apache.org/solr/guide/6_6/field-type-definitions-and-properties.html

Answer 2

I had tried in many different way, but none work. Than I had implement as below and it work fine.

Let me know below method is correct or not, but works fine for me :)

I had remove below code from schema,

<fieldType name="string" class="solr.StrField" sortMissingLast="true" docValues="true"/>

And added (replace) below code,

<fieldType name="string" class="solr.TextField">
  <analyzer type="index">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
</fieldType>