Solr多边形搜索问题

我们在solr空间查询方面遇到了麻烦一些多边形查询根本不起作用，我们不知道为什么。如果您有类型为solr.SpatialRecursivePrefixTreeFieldType的字段

<!-- fieldType to store a location in the new format of Solr Version 4 -->        
<fieldType name="location_rpt"   class="solr.SpatialRecursivePrefixTreeFieldType"
               spatialContextFactory="com.spatial4j.core.context.jts.JtsSpatialContextFactory"
               distErrPct="0.025"
               maxDistErr="0.000009"
               units="degrees"/>

（即使索引为空）solr将永远挂起并加载，而不会记录错误或显示结果。我们尝试查询的许多查询/多边形都会发生这种情况。我们做错了什么，还是多边形搜索在solr 4.5中还不可用？

我在这里找到了答案：

---

多边形太长，无法通过GET请求提交给solr。我们更改了Tomcat设置，现在一切正常。

您只是索引点吗？如果是这样，请使用Intersects not IsWithin，并报告它对您的作用。IsWithin是一种速度慢得多的算法，它不“知道”索引的唯一数据是点，它是为非点索引数据设计的。希望在不久的发行版中，您能够告诉Solr您只有点索引数据。Thx的信息，将这样做。IMO您不应该增加这一点，您应该使用POST。我必须处理与我的大多边形相同的约束，我的客户端根据url大小在GET和POST之间切换。GET增强了调试能力，但其设计/适用性并不特别长。由于访问日志记录和易于处理，我们将GET用于我们的测试服务，从服务到solr的连接始终是POST的，生产实际上将仅通过POST进行。嗨，David，我们手头还有另一个问题。我们还尝试在每个文档中索引多边形的质心，因此我们添加了另一个SpatialRecursivePrefixTreeFieldType字段，并尝试在一个文档中索引多边形及其质心。在10000多个多边形中，我们只能索引大约1200个，其余的由于奇怪的错误（点交点和类似的东西）而没有插入。当我们首先只索引多边形，然后在另一个核心或其他文档中索引质心时，一切都很好，但似乎我们不能在一个文档中有两个v4空间字段。这是一个bug吗？Chris，您的评论可能是发送给solr用户列表的电子邮件，或者作为另一个堆栈溢出问题询问这个问题，并提供一个特定的错误。

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Enabling Longer Query Requests

If you try to submit too long a GET query to Solr, then Tomcat will reject your HTTP request on the grounds that the HTTP header is too large; symptoms may include an HTTP 400 Bad Request error or (if you execute the query in a web browser) a blank browser window.

If you need to enable longer queries, you can set the maxHttpHeaderSize attribute on the HTTP Connector element in your server.xml file. The default value is 4K. (See http://tomcat.apache.org/tomcat-5.5-doc/config/http.html)