Searching and indexing are two different things, however generally related. For a decent search engine my favourite is Lucene however RavenDB may be preferable.
Hopefully someone can suggest a good indexer.
For a complete solution you might want to look ay implementing the enterprise search engine in SharePoint.
Another alternative is to purchase a Google local search server.
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搜索和索引是两个不同的事情，但通常是相关的。对于一个像样的搜索引擎，我最喜欢的是 Lucene 但是 RavenDB 可能更可取。
希望有人能推荐一个好的索引器。
对于完整的解决方案，您可能希望在 SharePoint 中实现企业搜索引擎。
另一种选择是购买 Google 本地搜索服务器。
Searching and indexing are two different things, however generally related. For a decent search engine my favourite is Lucene however RavenDB may be preferable.
Hopefully someone can suggest a good indexer.
For a complete solution you might want to look ay implementing the enterprise search engine in SharePoint.
Another alternative is to purchase a Google local search server.
您可以使用 Apache Solr ：它包括强大的文本搜索、动态聚类、地理空间搜索等等。
You can go for Apache Solr : It includes powerful text search , dynamic clustering , geospatial search and many more.
还有这个
http://www.dtsearch.com/PLF_engine_2.html
一些文档：http://support .dtsearch.com/webhelp/dtSearchNetApi2/frames.html?frmname=topic&frmfile=dtSearch__Engine.html
Also this
http://www.dtsearch.com/PLF_engine_2.html
Some documentation:http://support.dtsearch.com/webhelp/dtSearchNetApi2/frames.html?frmname=topic&frmfile=dtSearch__Engine.html