solr异常解决

使用solr1.4跟solr3.1时，配置了个唯一id类型是sint 或者int,启动时在tomcat后台就会抛出这个异常：

org.apache.solr.common.SolrException:

QueryElevationComponent requires the schema to have a uniqueKeyField implemented using StrField。

之前都是将sint或者int换为StrField类型解决问题的，后来发现只要去掉solrconfig.xml配置的 即 Elevation 组件就可以了：

 <!-- 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>
       <str name="df">text</str>
     </lst>
     <arr name="last-components">
       <str>elevator</str>
     </arr>
   </requestHandler>