如何使用API​​添加到架構「\ n」（PatternReplaceCharFilterFactory）？

Question

我需要刪除全部內容中的\ n。我決定用PatternReplaceCharFilterFactory，我需要添加使用API​​調用來SCHEMA.XML

<filter class="solr.PatternReplaceCharFilterFactory" pattern="\n" replace="all" replacement=""/> 

。但是，solr編碼這種模式。 我打電話

curl -X "POST" "http://localhost:$PORT/solr/$CORE_NAME/schema" \ 
    -H "Content-Type: application/json" \ 
    -d $'{ 
    "add-field-type": { 
    ........ 
    "indexAnalyzer": { 
     "filters": [ 
     { 
      "class": "solr.PatternReplaceCharFilterFactory", 
      "pattern":"\n", 
      "replacement":"", 
      "replace":"all" 
     },] 
     ........... 
    } 

但schema.xml中

Solr的創建

 <filter class="solr.PatternReplaceCharFilterFactory" pattern=" 
" replace="all" replacement=""/> 

我嘗試添加\ n，\ n（\ n）的但結果一樣，它不能正常工作。

Answer 1

逃脫的反斜槓對我有用："pattern": "\\n"。

我檢查，在託管模式文件：

<fieldType name="myNewTextField" class="solr.TextField"> 
    <analyzer type="index"> 
    <tokenizer class="solr.PathHierarchyTokenizerFactory" delimiter="/"/> 
    <filter class="solr.PatternReplaceCharFilterFactory" pattern="\n" replace="all" replacement=""/> 
    </analyzer> 
    <analyzer type="query"> 
    <tokenizer class="solr.KeywordTokenizerFactory"/> 
    </analyzer> 
</fieldType> 

所以全捲曲命令如下所示：

curl -X POST -H 'Content-type: application/json' "http://localhost:8983/solr/gettingstarted/schema" -d '{ 
    "add-field-type": { 
    "name": "myNewTextField", 
    "class": "solr.TextField", 
    "indexAnalyzer": { 
     "tokenizer": { 
     "class": "solr.PathHierarchyTokenizerFactory", 
     "delimiter": "/" 
     }, 
     "filters": [ 
     { 
      "class": "solr.PatternReplaceCharFilterFactory", 
      "pattern": "\\n", 
      "replacement": "", 
      "replace": "all" 
     } 
     ] 
    }, 
    "queryAnalyzer": { 
     "tokenizer": { 
     "class": "solr.KeywordTokenizerFactory" 
     } 
    } 
    } 
}'