检索提取的文本使用Apache Solr实现

Question

我新的Apache Solr实现，我想用它来索引PDF文件。我设法得到它，至今运行，我现在可以搜索添加PDF文件。

不过，我需要能够检索结果的搜索文本。

我发现在默认solrconfig.xml中正是有关的XML片段：

<requestHandler name="/update/extract" class="org.apache.solr.handler.extraction.ExtractingRequestHandler" startup="lazy"> 
<lst name="defaults"> 
    <!-- All the main content goes into "text"... if you need to return 
     the extracted text or do highlighting, use a stored field. --> 
    <str name="fmap.content">text</str> 
    <str name="lowernames">true</str> 
    <str name="uprefix">ignored_</str> 

    <!-- capture link hrefs but ignore div attributes --> 
    <str name="captureAttr">true</str> 
    <str name="fmap.a">links</str> 
    <str name="fmap.div">ignored_</str> 
</lst> 

从我从这里（http://www.lucidimagination.com/Community/Hear -from-the-Experts/Articles/Content-Extraction-Tika），我想我必须为存储=“true”和索引=“true”的schema.xml添加一个新字段（例如“content”）。不过，我真的不知道如何准确地做到这一点？

赞赏任何帮助，THX

Answer 1

添加schema.xml中看起来像这样：

<?xml version="1.0" encoding="UTF-8" ?> 

<schema name="whatever" version="1.2"> 
    <types> 
     <fieldType name="string" class="solr.StrField" sortMissingLast="true" omitNorms="true"/> 
     <fieldType name="int" class="solr.TrieIntField" precisionStep="0" omitNorms="true" positionIncrementGap="0"/> 
     <fieldType name="float" class="solr.TrieFloatField" precisionStep="0" omitNorms="true" positionIncrementGap="0"/> 
     <fieldType name="long" class="solr.TrieLongField" precisionStep="0" omitNorms="true" positionIncrementGap="0"/> 
     <fieldType name="double" class="solr.TrieDoubleField" precisionStep="0" omitNorms="true" positionIncrementGap="0"/> 
     <fieldType name="date" class="solr.TrieDateField" omitNorms="true" precisionStep="0" positionIncrementGap="0"/> 
     <fieldType name="text" class="solr.TextField" positionIncrementGap="100"> 
      <analyzer type="index"> 
       <charFilter class="solr.HTMLStripCharFilterFactory"/> 
       <charFilter class="solr.MappingCharFilterFactory" mapping="../../mapping-ISOLatin1Accent.txt"/> 
       <tokenizer class="solr.StandardTokenizerFactory"/> 
       <filter class="solr.StandardFilterFactory"/> 
       <filter class="solr.LowerCaseFilterFactory"/> 
      </analyzer> 
      <analyzer type="query"> 
       <charFilter class="solr.HTMLStripCharFilterFactory"/> 
       <charFilter class="solr.MappingCharFilterFactory" mapping="../../mapping-ISOLatin1Accent.txt"/> 
       <tokenizer class="solr.StandardTokenizerFactory"/> 
       <filter class="solr.StandardFilterFactory"/> 
       <filter class="solr.LowerCaseFilterFactory"/> 
      </analyzer> 
     </fieldType> 
    </types> 
    <fields> 
     <field name="internal_id" type="string" indexed="true" stored="true"/> 
     <field name="cat" type="int" indexed="true" stored="true"/> 
     <field name="desc" type="text" indexed="true" stored="true"/> 
    </fields> 
    <uniqueKey>internal_id</uniqueKey> 
    <defaultSearchField>desc</defaultSearchField> 
    <solrQueryParser defaultOperator="OR"/> 
    <similarity class="org.apache.lucene.search.DefaultSimilarity"/> 
</schema> 

如果“场”被“存储”，它会在结果中显示，在默认情况下。