我正在使用Apache Solr 3.6.0。我用这个命令索引了一个文件：
curl "http://localhost:8983/solr/update/extract?stream.file=/home/Desktop/DOCUMENTS/x.pdf&stream.contentType=application/pdf&literal.id=DOC_N&commit=true"
例如，当我搜索文本时：
"http://localhost:8983/solr/select/?q=Getting+Started&version=2.2&start=0&rows=10&indent=on"
结果返回是：
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">12</int>
<lst name="params">
<str name="indent">on</str>
<str name="start">0</str>
<str name="q">Getting Started</str>
<str name="version">2.2</str>
<str name="rows">10</str>
</lst>
</lst>
<result name="response" numFound="3" start="0">
<doc>
<arr name="content_type">
<str>application/pdf</str>
</arr>
<str name="id">doc2</str>
</doc>
<doc>
<arr name="content_type">
<str>application/pdf</str>
</arr>
<str name="id">1</str>
</doc>
<doc>
<arr name="content_type">
<str>application/pdf</str>
</arr>
<str name="id">DOC_N</str>
</doc>
</result>
</response>
我从中得到的是结果是在 pdf 中找到的。现在我想实现一个搜索，比如：它会在我从被索引的 pdf 中搜索的那个词之前和之后返回一些文本。请帮忙。
这是我的solrconfig.xml
<?xml version="1.0" encoding="UTF-8" ?>
<config>
<abortOnConfigurationError>${solr.abortOnConfigurationError:true}</abortOnConfigurationError>
<luceneMatchVersion>LUCENE_36</luceneMatchVersion>
<lib dir="../../dist/" regex="apache-solr-cell-\d.*\.jar" />
<lib dir="../../contrib/extraction/lib" regex=".*\.jar" />
<lib dir="../../dist/" regex="apache-solr-clustering-\d.*\.jar" />
<lib dir="../../contrib/clustering/lib/" regex=".*\.jar" />
<lib dir="../../dist/" regex="apache-solr-dataimporthandler-\d.*\.jar" />
<lib dir="../../contrib/dataimporthandler/lib/" regex=".*\.jar" />
<lib dir="../../dist/" regex="apache-solr-langid-\d.*\.jar" />
<lib dir="../../contrib/langid/lib/" regex=".*\.jar" />
<lib dir="../../dist/" regex="apache-solr-velocity-\d.*\.jar" />
<lib dir="../../contrib/velocity/lib" regex=".*\.jar" />
<dataDir>${solr.data.dir:}</dataDir>
<directoryFactory name="DirectoryFactory"
class="${solr.directoryFactory:solr.StandardDirectoryFactory}"/>
<indexConfig>
</indexConfig>
<jmx />
<query>
<maxBooleanClauses>1024</maxBooleanClauses>
<filterCache class="solr.FastLRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<queryResultCache class="solr.LRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<documentCache class="solr.LRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<enableLazyFieldLoading>true</enableLazyFieldLoading>
<queryResultWindowSize>20</queryResultWindowSize>
<queryResultMaxDocsCached>200</queryResultMaxDocsCached>
<listener event="newSearcher" class="solr.QuerySenderListener">
<arr name="queries">
</arr>
</listener>
<listener event="firstSearcher" class="solr.QuerySenderListener">
<arr name="queries">
<lst>
<str name="q">static firstSearcher warming in solrconfig.xml</str>
</lst>
</arr>
</listener>
<useColdSearcher>false</useColdSearcher>
<maxWarmingSearchers>2</maxWarmingSearchers>
</query>
<requestDispatcher>
<requestParsers enableRemoteStreaming="true"
multipartUploadLimitInKB="2048000" />
<httpCaching never304="true" />
</requestDispatcher>
<requestHandler name="/select" class="solr.SearchHandler">
<lst name="defaults">
<str name="echoParams">explicit</str>
<int name="rows">10</int>
<str name="df">text</str>
</lst>
</requestHandler>
<requestHandler name="/browse" class="solr.SearchHandler">
<lst name="defaults">
<str name="echoParams">explicit</str>
<!-- VelocityResponseWriter settings -->
<str name="wt">velocity</str>
<str name="v.template">browse</str>
<str name="v.layout">layout</str>
<str name="title">Solritas</str>
<str name="df">text</str>
<str name="defType">edismax</str>
<str name="q.alt">*:*</str>
<str name="rows">10</str>
<str name="fl">*,score</str>
<str name="mlt.qf">
text^0.5 features^1.0 name^1.2 sku^1.5 id^10.0 manu^1.1 cat^1.4
</str>
<str name="mlt.fl">text,features,name,sku,id,manu,cat</str>
<int name="mlt.count">3</int>
<str name="qf">
text^0.5 features^1.0 name^1.2 sku^1.5 id^10.0 manu^1.1 cat^1.4
</str>
<str name="facet">on</str>
<str name="facet.field">cat</str>
<str name="facet.field">manu_exact</str>
<str name="facet.query">ipod</str>
<str name="facet.query">GB</str>
<str name="facet.mincount">1</str>
<str name="facet.pivot">cat,inStock</str>
<str name="facet.range.other">after</str>
<str name="facet.range">price</str>
<int name="f.price.facet.range.start">0</int>
<int name="f.price.facet.range.end">600</int>
<int name="f.price.facet.range.gap">50</int>
<str name="facet.range">popularity</str>
<int name="f.popularity.facet.range.start">0</int>
<int name="f.popularity.facet.range.end">10</int>
<int name="f.popularity.facet.range.gap">3</int>
<str name="facet.range">manufacturedate_dt</str>
<str name="f.manufacturedate_dt.facet.range.start">NOW/YEAR-10YEARS</str>
<str name="f.manufacturedate_dt.facet.range.end">NOW</str>
<str name="f.manufacturedate_dt.facet.range.gap">+1YEAR</str>
<str name="f.manufacturedate_dt.facet.range.other">before</str>
<str name="f.manufacturedate_dt.facet.range.other">after</str>
<requestHandler name="/update/javabin"
class="solr.BinaryUpdateRequestHandler" />
<requestHandler name="/update/csv"
class="solr.CSVRequestHandler"
startup="lazy" />
<requestHandler name="/update/json"
class="solr.JsonUpdateRequestHandler"
startup="lazy" />
<requestHandler name="/update/extract"
startup="lazy"
class="solr.extraction.ExtractingRequestHandler" >
<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>
</requestHandler>
<requestHandler name="/update/xslt"
startup="lazy"
class="solr.XsltUpdateRequestHandler"/>
<requestHandler name="/analysis/field"
startup="lazy"
class="solr.FieldAnalysisRequestHandler" />
<requestHandler name="/analysis/document"
class="solr.DocumentAnalysisRequestHandler"
startup="lazy" />
<requestHandler name="/admin/"
class="solr.admin.AdminHandlers" />
<requestHandler name="/admin/ping" class="solr.PingRequestHandler">
<lst name="invariants">
<str name="q">solrpingquery</str>
</lst>
<lst name="defaults">
<str name="echoParams">all</str>
</lst>
</requestHandler>
<!-- Echo the request contents back to the client -->
<requestHandler name="/debug/dump" class="solr.DumpRequestHandler" >
<lst name="defaults">
<str name="echoParams">explicit</str>
<str name="echoHandler">true</str>
</lst>
</requestHandler>
<searchComponent name="spellcheck" class="solr.SpellCheckComponent">
<str name="queryAnalyzerFieldType">textSpell</str>
<lst name="spellchecker">
<str name="name">default</str>
<str name="field">name</str>
<str name="spellcheckIndexDir">spellchecker</str>
<!-- uncomment this to require terms to occur in 1% of the documents
in order to be included in the dictionary
-->
</lst>
</searchComponent>
<requestHandler name="/spell" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<str name="df">text</str>
<str name="spellcheck.onlyMorePopular">false</str>
<str name="spellcheck.extendedResults">false</str>
<str name="spellcheck.count">1</str>
</lst>
<arr name="last-components">
<str>spellcheck</str>
</arr>
</requestHandler>
<searchComponent name="tvComponent" class="solr.TermVectorComponent"/>
<requestHandler name="/tvrh" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<str name="df">text</str>
<bool name="tv">true</bool>
</lst>
<arr name="last-components">
<str>tvComponent</str>
</arr>
</requestHandler>
<searchComponent name="clustering"
enable="${solr.clustering.enabled:false}"
class="solr.clustering.ClusteringComponent" >
<!-- Declare an engine -->
<lst name="engine">
<!-- The name, only one can be named "default" -->
<str name="name">default</str>
<!-- Class name of Carrot2 clustering algorithm.
Currently available algorithms are:
* org.carrot2.clustering.lingo.LingoClusteringAlgorithm
* org.carrot2.clustering.stc.STCClusteringAlgorithm
* org.carrot2.clustering.kmeans.BisectingKMeansClusteringAlgorithm
See http://project.carrot2.org/algorithms.html for the
algorithm's characteristics.
-->
<str name="carrot.algorithm">org.carrot2.clustering.lingo.LingoClusteringAlgorithm</str>
<str name="LingoClusteringAlgorithm.desiredClusterCountBase">20</str>
<str name="carrot.lexicalResourcesDir">clustering/carrot2</str>
<str name="MultilingualClustering.defaultLanguage">ENGLISH</str>
</lst>
<lst name="engine">
<str name="name">stc</str>
<str name="carrot.algorithm">org.carrot2.clustering.stc.STCClusteringAlgorithm</str>
</lst>
</searchComponent>
<!-- A request handler for demonstrating the clustering component
This is purely as an example.
In reality you will likely want to add the component to your
already specified request handlers.
-->
<requestHandler name="/clustering"
startup="lazy"
enable="${solr.clustering.enabled:false}"
class="solr.SearchHandler">
<lst name="defaults">
<bool name="clustering">true</bool>
<str name="clustering.engine">default</str>
<bool name="clustering.results">true</bool>
<!-- The title field -->
<str name="carrot.title">name</str>
<str name="carrot.url">id</str>
<!-- The field to cluster on -->
<str name="carrot.snippet">features</str>
<!-- produce summaries -->
<bool name="carrot.produceSummary">true</bool>
<bool name="carrot.outputSubClusters">false</bool>
<str name="df">text</str>
<str name="defType">edismax</str>
<str name="qf">
text^0.5 features^1.0 name^1.2 sku^1.5 id^10.0 manu^1.1 cat^1.4
</str>
<str name="q.alt">*:*</str>
<str name="rows">10</str>
<str name="fl">*,score</str>
</lst>
<arr name="last-components">
<str>clustering</str>
</arr>
</requestHandler>
<searchComponent name="terms" class="solr.TermsComponent"/>
<requestHandler name="/terms" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<bool name="terms">true</bool>
</lst>
<arr name="components">
<str>terms</str>
</arr>
</requestHandler>
<searchComponent name="elevator" class="solr.QueryElevationComponent" >
<!-- pick a fieldType to analyze queries -->
<str name="queryFieldType">string</str>
<str name="config-file">elevate.xml</str>
</searchComponent>
<!-- A request handler for demonstrating the elevator component -->
<requestHandler name="/elevate" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<str name="echoParams">explicit</str>
<str name="df">text</str>
</lst>
<arr name="last-components">
<str>elevator</str>
</arr>
</requestHandler>
<searchComponent class="solr.HighlightComponent" name="highlight">
<highlighting>
<!-- Configure the standard fragmenter -->
<!-- This could most likely be commented out in the "default" case -->
<fragmenter name="gap"
default="true"
class="solr.highlight.GapFragmenter">
<lst name="defaults">
<int name="hl.fragsize">100</int>
</lst>
</fragmenter>
<!-- A regular-expression-based fragmenter
(for sentence extraction)
-->
<fragmenter name="regex"
class="solr.highlight.RegexFragmenter">
<lst name="defaults">
<!-- slightly smaller fragsizes work better because of slop -->
<int name="hl.fragsize">70</int>
<!-- allow 50% slop on fragment sizes -->
<float name="hl.regex.slop">0.5</float>
<!-- a basic sentence pattern -->
<str name="hl.regex.pattern">[-\w ,/\n\"']{20,200}</str>
</lst>
</fragmenter>
<!-- Configure the standard formatter -->
<formatter name="html"
default="true"
class="solr.highlight.HtmlFormatter">
<lst name="defaults">
<str name="hl.simple.pre"><![CDATA[<em>]]></str>
<str name="hl.simple.post"><![CDATA[</em>]]></str>
</lst>
</formatter>
<encoder name="html"
class="solr.highlight.HtmlEncoder" />
<fragListBuilder name="simple"
default="true"
class="solr.highlight.SimpleFragListBuilder"/>
<!-- Configure the single fragListBuilder -->
<fragListBuilder name="single"
class="solr.highlight.SingleFragListBuilder"/>
<!-- default tag FragmentsBuilder -->
<fragmentsBuilder name="default"
default="true"
class="solr.highlight.ScoreOrderFragmentsBuilder">
<!--
<lst name="defaults">
<str name="hl.multiValuedSeparatorChar">/</str>
</lst>
-->
</fragmentsBuilder>
<!-- multi-colored tag FragmentsBuilder -->
<fragmentsBuilder name="colored"
class="solr.highlight.ScoreOrderFragmentsBuilder">
<lst name="defaults">
<str name="hl.tag.pre"><![CDATA[
<b style="background:yellow">,<b style="background:lawgreen">,
<b style="background:aquamarine">,<b style="background:magenta">,
<b style="background:palegreen">,<b style="background:coral">,
<b style="background:wheat">,<b style="background:khaki">,
<b style="background:lime">,<b style="background:deepskyblue">]]></str>
<str name="hl.tag.post"><![CDATA[</b>]]></str>
</lst>
</fragmentsBuilder>
<boundaryScanner name="default"
default="true"
class="solr.highlight.SimpleBoundaryScanner">
<lst name="defaults">
<str name="hl.bs.maxScan">10</str>
<str name="hl.bs.chars">.,!? 	 </str>
</lst>
</boundaryScanner>
<boundaryScanner name="breakIterator"
class="solr.highlight.BreakIteratorBoundaryScanner">
<lst name="defaults">
<str name="hl.bs.type">WORD</str>
<str name="hl.bs.language">en</str>
<str name="hl.bs.country">US</str>
</lst>
</boundaryScanner>
</highlighting>
</searchComponent>
<queryResponseWriter name="json" class="solr.JSONResponseWriter">
<str name="content-type">text/plain; charset=UTF-8</str>
</queryResponseWriter>
<queryResponseWriter name="velocity" class="solr.VelocityResponseWriter" startup="lazy"/>
<!-- XSLT response writer transforms the XML output by any xslt file found
in Solr's conf/xslt directory. Changes to xslt files are checked for
every xsltCacheLifetimeSeconds.
-->
<queryResponseWriter name="xslt" class="solr.XSLTResponseWriter">
<int name="xsltCacheLifetimeSeconds">5</int>
</queryResponseWriter>
<!-- Query Parsers
http://wiki.apache.org/solr/SolrQuerySyntax
Multiple QParserPlugins can be registered by name, and then
used in either the "defType" param for the QueryComponent (used
by SearchHandler) or in LocalParams
-->
<!-- example of registering a query parser -->
<!--
<queryParser name="myparser" class="com.mycompany.MyQParserPlugin"/>
-->
<admin>
<defaultQuery>*:*</defaultQuery>
<!-- configure a healthcheck file for servers behind a
loadbalancer
-->
<!--
<healthcheck type="file">server-enabled</healthcheck>
-->
</admin>
<searchComponent name="suggest_full" class="solr.SpellCheckComponent">
<str name="queryAnalyzerFieldType">suggestTextFull</str>
<lst name="spellchecker">
<str name="name">suggest_full</str>
<str name="classname">org.apache.solr.spelling.suggest.Suggester</str>
<str name="lookupImpl">org.apache.solr.spelling.suggest.tst.TSTLookup</str>
<str name="field">text_suggest_full</str>
<str name="fieldType">suggestTextFull</str>
</lst>
</searchComponent>
<requestHandler name="/suggest_full" class="org.apache.solr.handler.component.SearchHandler">
<lst name="defaults">
<str name="echoParams">explicit</str>
<str name="spellcheck">true</str>
<str name="spellcheck.dictionary">suggest_full</str>
<str name="spellcheck.count">10</str>
<str name="spellcheck.onlyMorePopular">true</str>
</lst>
<arr name="last-components">
<str>suggest_full</str>
</arr>
</requestHandler>
<requestHandler name="edismax" class="solr.SearchHandler" default="true">
<lst name="defaults">
<str name="defType">edismax</str>
<str name="echoParams">explicit</str>
<float name="tie">0.1</float>
<str name="fl">keywords</str>
<str name="mm">1</str>
<str name="qf">kw_stopped^1.0 kw_phrases^5.0</str>
<str name="pf">kw_phrases^50.0</str>
<int name="ps">3</int>
<int name="qs">3</int>
<str name="q.alt">*:*</str>
</lst>
</requestHandler>
<highlighting>
<!-- Configure the standard fragmenter -->
<!-- This could most likely be commented out in the "default" case -->
<fragmenter name="gap" class="org.apache.solr.highlight.GapFragmenter" default="true">
<lst name="defaults">
<int name="hl.fragsize">100</int>
</lst>
</fragmenter>
<!-- A regular-expression-based fragmenter (f.i., for sentence extraction) -->
<fragmenter name="regex" class="org.apache.solr.highlight.RegexFragmenter">
<lst name="defaults">
<!-- slightly smaller fragsizes work better because of slop -->
<int name="hl.fragsize">70</int>
<!-- allow 50% slop on fragment sizes -->
<float name="hl.regex.slop">0.5</float>
<!-- a basic sentence pattern -->
<str name="hl.regex.pattern">[-\w ,/\n\"']{20,200}</str>
</lst>
</fragmenter>
<!-- Configure the standard formatter -->
<formatter name="html" class="org.apache.solr.highlight.HtmlFormatter" default="true">
<lst name="defaults">
<str name="hl.simple.pre"><![CDATA[<em>]]></str>
<str name="hl.simple.post"><![CDATA[</em>]]></str>
</lst>
</formatter>
</highlighting>
<!-- multi-colored tag FragmentsBuilder -->
<fragmentsBuilder name="colored" class="org.apache.solr.highlight.ScoreOrderFragmentsBuilder">
<lst name="defaults">
<str name="hl.tag.pre"><![CDATA[
<b style="background:yellow">,<b style="background:lawgreen">,
<b style="background:aquamarine">,<b style="background:magenta">,
<b style="background:palegreen">,<b style="background:coral">,
<b style="background:wheat">,<b style="background:khaki">,
<b style="background:lime">,<b style="background:deepskyblue">]]></str>
<str name="hl.tag.post"><![CDATA[</b>]]></str>
</lst>
</fragmentsBuilder>
<boundaryScanner name="breakIterator" class="solr.highlight.BreakIteratorBoundaryScanner">
<lst name="defaults">
<str name="hl.bs.type">WORD</str>
<str name="hl.bs.language">en</str>
<str name="hl.bs.country">US</str>
</lst>
</boundaryScanner>
<boundaryScanner name="simple" class="solr.highlight.SimpleBoundaryScanner" default="true">
<lst name="defaults">
<str name="hl.bs.maxScan">10</str>
<str name="hl.bs.chars">.,!?\t\n</str>
</lst>
</boundaryScanner>
</config>