欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

Solr将数据库中table中的数据导入到索引

程序员文章站 2022-05-25 23:18:10
...
Solr将数据库中table中的数据导入到索引

版权信息: 可以任意转载, 转载时请务必以超链接形式标明文章原文出处, 即下面的声明.
原文出处:http://tbwuming.iteye.com/blog/1152333

1、首先在MySQL中创建表,并写入数据
-- ----------------------------
-- Table structure for course
-- ----------------------------
CREATE TABLE `course` (
  `id` int(11) NOT NULL,
  `user` varchar(20) NOT NULL,
  `title` varchar(50) NOT NULL,
  `content` varchar(200) NOT NULL,
  `time` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


-- ----------------------------
-- Records
-- ----------------------------
INSERT INTO `course` VALUES ('1', 'tiehong', '搜索', '这一小节讲搜索引擎,可以通过搜索引擎查找一些数据', '2011-08-18 10:41:35');
INSERT INTO `course` VALUES ('2', '*', '存储', '这一小节讲分布式存储,可以存储很多数据', '2011-08-18 10:42:19');
INSERT INTO `course` VALUES ('3', 'lengda', '数据导入', '这一小节讲数据导入,可以从mysql数据库中导入数据', '2011-08-18 10:42:59');


2、修改apache-solr-3.3.0\example\solr\conf\schema.xml文件
<?xml version="1.0" encoding="UTF-8" ?>
<schema name="example" version="1.4">
  <types>    
     <fieldType name="tint" class="solr.TrieIntField" precisionStep="8" omitNorms="true" positionIncrementGap="0"/>

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

     <fieldType name="text" class="solr.TextField" positionIncrementGap="100">
      <analyzer type="index">
        <tokenizer class="solr.StandardTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>
      <analyzer type="query">
        <tokenizer class="solr.StandardTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
        <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>
    </fieldType>

     <fieldType name="date" class="solr.TrieDateField" omitNorms="true" precisionStep="0" positionIncrementGap="0"/>  
</types>

<fields>
   <field name="id" type="tint" indexed="true" stored="true" required="true" />
   <field name="user" type="string" indexed="true" stored="true"/>
   <field name="title" type="text" indexed="true" stored="true"/> 
   <field name="content" type="text" indexed="true" stored="true" /> 
   <field name="time" type="date" indexed="true" stored="true" default="NOW"/>  
</fields>

<uniqueKey>id</uniqueKey>
<defaultSearchField>title</defaultSearchField> 
<solrQueryParser defaultOperator="AND"/>  

</schema>



3、编辑apache-solr-3.3.0\example\solr\conf\solrconfig.xml文件,添加内容如下:
<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport.DataImportHandler"> 
          <lst name="defaults"> 
               <str name="config">data-config.xml</str> 
          </lst> 
</requestHandler>



4、创建data-config.xml文件,放在apache-solr-3.3.0\example\solr\conf\目录下,文件内容如下:
<dataConfig> 
  <dataSource type="JdbcDataSource" 
              driver="com.mysql.jdbc.Driver" 
              url="jdbc:mysql://localhost/dbname" 
              user="user-name" 
              password="password"/> 
  <document> 
    <entity name="id" 
            query="select * from course"> 
    </entity> 
  </document> 
</dataConfig>  


5、将MySQL的JDBC驱动放在apache-solr-3.3.0\example\lib目录下

6、启动Solr服务,命令行进入apache-solr-3.3.0\example\目录,运行 java -jar  start.jar
     出现问题:
严重: org.apache.solr.common.SolrException: QueryElevationComponent requires the
schema to have a uniqueKeyField implemented using StrField at org.apache.solr.handler.component.QueryElevationComponent.inform(QueryElevationComponent.java:158)
        at org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:522)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:594)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
        at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:130)
        at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
        at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713)
        at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
        at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
        at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
        at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
        at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
        at org.mortbay.jetty.Server.doStart(Server.java:224)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.mortbay.start.Main.invokeMain(Main.java:194)
        at org.mortbay.start.Main.start(Main.java:534)
        at org.mortbay.start.Main.start(Main.java:441)
        at org.mortbay.start.Main.main(Main.java:119)

     解决:
          修改apache-solr-3.3.0\example\solr\conf\solrconfig.xml文件,删除内容如下:
         
  
<!-- Query Elevation Component
       http://wiki.apache.org/solr/QueryElevationComponent

       a search component that enables you to configure the top
       results for a given query regardless of the normal lucene
       scoring.
    -->
  <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>
    </lst>
    <arr name="last-components">
      <str>elevator</str>
    </arr>
  </requestHandler>


     wiki上的解释:
         
引用
The QueryElevationComponent enables you to configure the top results for a given query regardless of the normal lucene scoring. This is sometimes called "sponsored search", "editorial boosting" or "best bets".           This component matches the user query text to a configured Map of top results. Although this component will work with any QueryParser, it makes the most sense to use with DisMax style queries.

     我的理解:相当于竞价排名,无视搜索的排序,可以额外在顶部配置自定义的结果


7、运行命令:在浏览器中输入:http://localhost:8983/solr/dataimport?command=full-import 来完成全量数据导入,在每次全量数据导入执行的时候,原有索引会被删除,如果不想删除原有索引,可以运行如下命令:http://localhost:8983/solr/dataimport?command=full-import&clean=false  ,全量数据导入在浏览器中显示的效果如下:

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<response>
    <lst name="responseHeader">
        <int name="status">0</int>
        <int name="QTime">5</int>
    </lst>
    <lst name="initArgs">
        <lst name="defaults">
             <str name="config">data-config.xml</str>
        </lst>
    </lst>
    <str name="command">full-import</str>
    <str name="status">idle</str>
    <str name="importResponse"/>
    <lst name="statusMessages"/>
    <str name="WARNING">
        This response format is experimental. It is likely to change in the future.
    </str>
</response>


8、进行搜索,在浏览器中输入http://localhost:8983/solr/admin/

Solr将数据库中table中的数据导入到索引
            
    
    博客分类: Solr javasolr 


搜索结果如下:
This XML file does not appear to have any style information associated with it. The document tree is shown below.
<response>
    <lst name="responseHeader">
        <int name="status">0</int>
        <int name="QTime">0</int>
        <lst name="params">
            <str name="indent">on</str>
            <str name="start">0</str>
            <str name="q">*:*</str>
            <str name="version">2.2</str>
            <str name="rows">10</str>
        </lst>
    </lst>
    <result name="response" numFound="3" start="0">
      <doc>
        <str name="content">这一小节讲搜索引擎,可以通过搜索引擎查找一些数据</str>
        <int name="id">1</int>
        <date name="time">2011-08-18T02:41:35Z</date>
        <str name="title">搜索</str>
        <str name="user">tiehong</str>
      </doc>
      <doc>
        <str name="content">这一小节讲分布式存储,可以存储很多数据</str>
        <int name="id">2</int>
        <date name="time">2011-08-18T02:42:19Z</date>
        <str name="title">存储</str>
        <str name="user">*</str>
      </doc>
      <doc>
        <str name="content">这一小节讲数据导入,可以从mysql数据库中导入数据</str>
        <int name="id">3</int>
        <date name="time">2011-08-18T02:42:59Z</date>
        <str name="title">数据导入</str>
        <str name="user">lengda</str>
      </doc>
    </result>
</response>


9、以不同的名字索引域
     上面data-config.xml配置中mysql中表的名字和schema.xml索引的名字相同,也可以配置使用不同的名字,如下:
<dataConfig>
  <dataSource type="JdbcDataSource"
              driver="com.mysql.jdbc.Driver"
              url="jdbc:mysql://localhost/dbname"
              user="user-name"
              password="password"/>
  <document>
    <entity name="id"
            query="select id,name,desc from mytable">
       <field column="id" name="solr_id"/>
       <field column="name" name="solr_name"/>
       <field column="desc" name="solr_desc"/>
    </entity>
  </document>
</dataConfig>

     此时,solr_id, solr_name,solr_desc将被写到solr域中,务必注意要在schema.xml文件中配置好这些域

10、从多个表索引数据到Solr
     修改data-config.xml文件
<dataConfig>
  <dataSource type="JdbcDataSource"
              driver="com.mysql.jdbc.Driver"
              url="jdbc:mysql://localhost/dbname"
              user="user-name"
              password="password"/>
  <document>
    <entity name="outer"
            query="select id,name,desc from mytable">
       <field column="id" name="solr_id"/>
       <field column="name" name="solr_name"/>
       <field column="desc" name="solr_desc"/>
       <entity name="inner"
               query="select details from another_table where id ='${outer.id}'">
              <field column="details" name="solr_details"/>
       </entity>
    </entity>
  </document>
</dataConfig>

     注意:schema.xml中还应该有solr_details域

11、参考:
     Solr Data Import 快速入门:http://blog.chenlb.com/2010/03/solr-data-import-quick-start.html
     Index a DB table directly into Solr:http://wiki.apache.org/solr/DIHQuickStart


























  • Solr将数据库中table中的数据导入到索引
            
    
    博客分类: Solr javasolr 
  • 大小: 23.3 KB
相关标签: java solr