我正在使用Tika索引PDF文件，在Solr-UI中我可以看到很多元数据和其他我不关心的“东西”也被编入索引：
"response": {
"numFound": 1,
"start": 0,
"docs": [
{
"meta": [
"dc:subject",
"",
"meta:save-date",
"2014-01-09T11:07:45Z",
"subject",
"",
"Author",
"smalik",
"dcterms:created",
"2014-01-09T11:07:45Z",
"date",
"2014-01-09T11:07:45Z",
"creator",
"smalik",
"Creation-Date",
"2014-01-09T11:07:45Z",
"meta:author",
"johndoe",
"stream_content_type",
"",
"created",
"Thu Jan 09 12:07:45 CET 2014",
"stream_size",
"null",
"meta:keyword",
"",
"cp:subject",
"",
"xmp:CreatorTool",
"PScript5.dll Version 5.2.2",
"Keywords",
"",
"Last-Save-Date",
"2014-01-09T11:07:45Z",
"dc:title",
"E-Mail zur Archivierung",
"meta:creation-date",
"2014-01-09T11:07:45Z",
"dcterms:modified",
"2014-01-09T11:07:45Z",
"dc:creator",
"johndoe",
"Last-Modified",
"2014-01-09T11:07:45Z",
"modified",
"2014-01-09T11:07:45Z",
"xmpTPg:NPages",
"1",
"producer",
"www.adlibsoftware.com:EXS41012-Windows 2008 R2:TNG",
"Content-Type",
"application/pdf"
],
"div": [
"page"
],
"id": [
"aaa11besd4effsujqub6toubqr4m3.pdf"
],
"dc_subject": [
""
],
"meta_save_date": [
"2014-01-09T11:07:45Z"
],
"subject": [
""
],
"author": [
"johndoe"
],
"dcterms_created": [
"2014-01-09T11:07:45Z"
],
"date": [
"2014-01-09T11:07:45Z"
],
"creator": [
"johndoe"
],
"creation_date": [
"2014-01-09T11:07:45Z"
],
"title": [
"E-Mail zur Archivierung"
],
"meta_author": [
"johndoe"
],
"stream_content_type": [
""
],
"created": [
"Thu Jan 09 12:07:45 CET 2014"
],
"stream_size": [
"null"
],
"meta_keyword": [
""
],
"cp_subject": [
""
],
"xmp_creatortool": [
"PScript5.dll Version 5.2.2"
],
"keywords": [
""
],
"last_save_date": [
"2014-01-09T11:07:45Z"
],
"dc_title": [
"E-Mail zur Archivierung"
],
"meta_creation_date": [
"2014-01-09T11:07:45Z"
],
"dcterms_modified": [
"2014-01-09T11:07:45Z"
],
"dc_creator": [
"johndoe"
],
"last_modified": [
"2014-01-09T11:07:45Z"
],
"modified": [
"2014-01-09T11:07:45Z"
],
"xmptpg_npages": [
"1"
],
"producer": [
"www.adlibsoftware.com:EXS41012-Windows 2008 R2:TNG"
],
"content_type": [
"application/pdf"
],
"fullText": [" abcdef"],
"uid": "d41d8cd98f00b204e9800998ecf8427e"
}
]
}
由于我只对“fullText”和“id”感兴趣，我想知道我在schema.xml和/或solrconfig.xml中设置/定义的方式/内容，以避免所有不必要的数据。
我想要的是这样的：
"response": {
"numFound": 1,
"start": 0,
"docs": [
{
"id": [
"aaa11besd4effsujqub6toubqr4m3.pdf"
],
"fullText": [" abcdef"],
"uid": "d41d8cd98f00b204e9800998ecf8427e"
}
]
}
实际上我的架构和solrconfig.xml看起来像这样：
<?xml version="1.0" encoding="UTF-8" ?>
<schema name="simple" version="1.1">
<types>
<fieldtype name="string" class="solr.StrField" postingsFormat="SimpleText" />
<fieldtype name="text" class="solr.TextField" postingsFormat="SimpleText">
<analyzer>
<charFilter class="solr.PatternReplaceCharFilterFactory" pattern="\n" replacement=""/>
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory" /> <!--Lowercases the letters in each token. Leaves non-letter tokens alone.-->
<filter class="solr.ClassicFilterFactory" /> <!--Removes dots from acronyms and 's from the end of tokens. Works only on typed tokens produced by ClassicTokenizer or equivalent.-->
<filter class="solr.TrimFilterFactory"/> <!--Trims whitespace at either end of a token. -->
<filter class="solr.StopFilterFactory" ignoreCase="true"/> <!--Discards common words. -->
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
</analyzer>
</fieldtype>
</types>
<fields>
<field name="uid" type="string" indexed="true" stored="true"
multiValued="false" />
<dynamicField name="*" type="string" multiValued="true"
indexed="true" stored="true" />
<field name="content" indexed="true" type="text" multiValued="true" />
</fields>
<defaultSearchField>content</defaultSearchField>
<solrQueryParser defaultOperator="OR" />
<uniqueKey>uid</uniqueKey>
</schema>
<?xml version="1.0" encoding="UTF-8" ?>
<config>
<luceneMatchVersion>LUCENE_45</luceneMatchVersion>
<directoryFactory name='DirectoryFactory' class='solr.MMapDirectoryFactory' />
<codecFactory name="CodecFactory" class="solr.SchemaCodecFactory" />
<lib dir='${solr.core.instanceDir}\lib' />
<lib dir="${solr.core.instanceDir}\dist\" regex="solr-cell-\d.*\.jar" />
<lib dir="${solr.core.instanceDir}\contrib\extraction\lib" regex=".*\.jar" />
<requestHandler name="standard" class="solr.StandardRequestHandler" default="true" />
<requestHandler name="/update" class="solr.UpdateRequestHandler">
<lst name="defaults">
<str name="update.chain">deduplication</str>
</lst>
</requestHandler>
<requestHandler name="/update/extract"
class="solr.extraction.ExtractingRequestHandler">
<lst name="defaults">
<str name="captureAttr">true</str>
<str name="lowernames">true</str>
<str name="overwrite">false</str>
<str name="captureAttr">true</str>
<str name="literalsOverride">true</str>
<str name="uprefix">ignored_</str>
<str name="fmap.a">link</str>
<str name="fmap.content">fullText</str>
<!-- the configuration here could be useful for tests -->
<str name="update.chain">deduplication</str>
</lst>
</requestHandler>
<updateRequestProcessorChain name="deduplication">
<processor
class="org.apache.solr.update.processor.SignatureUpdateProcessorFactory">
<bool name="overwriteDupes">false</bool>
<str name="signatureField">uid</str>
<bool name="enabled">true</bool>
<str name="fields">content</str>
<str name="minTokenLen">10</str>
<str name="quantRate">.2</str>
<str name="signatureClass">solr.update.processor.TextProfileSignature</str>
</processor>
<processor class="solr.LogUpdateProcessorFactory" />
<processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>
<requestHandler name="/admin/"
class="org.apache.solr.handler.admin.AdminHandlers" />
<lockType>none</lockType>
<admin>
<defaultQuery>*:*</defaultQuery>
</admin>
</config>
答案 0 :(得分：2)
请参阅Alexandre的答案和示例here。如果要获取不需要的字段，则需要在模式中显式声明它们，并将索引和存储设置为false（意味着Solr将忽略该字段）。您还可以使用动态字段忽略具有公共前缀或后缀的大量字符，这通常是Tika生成的文档的情况。