C# SolrNet空间搜索-基于geodist（）的排序

我正在将Solr（3.6.0）与SolrNet（0.4）一起使用，我正在寻找SolrNet中空间搜索方面的帮助—具体来说，就是按距离对结果进行排序

我的问题是：

var postcode = new SolrQueryByField("Postcode", fields[13]);
var distance = new SolrQueryByDistance("LatLong", latitude, longitude, 1);
QueryOptions options = new QueryOptions();
options.Rows = 25;
options.AddFilterQueries(distance);

我尝试过一些显而易见的事情：

options.OrderBy = new List<SortOrder> { new SortOrder("geodist()", Order.ASC)};

我还尝试将lat、long和distance参数传递给geodist（）函数，但没有成功

我可以手工构造这个查询，只是不能通过SolrNet！问题似乎与查询字符串的排序和括号方式有关

本工程（手工施工）：

{d=1&sort=geodist（）+asc&sfield=LatLong&version=2.2&rows=25&q=Postcode:“LN1+2EB”&pt=52.1，-1.11&fq={！geofilt}

失败（由SolrNet构建）：

{d=1&sort=geodist（）+asc&q=（邮政编码：“LN1+2EB”）&sField=LatLong&pt=53.289186，-0.705095&fq={！geofilt}&rows=25&version=2.2}

---

我想我在做些傻事；一定有办法让这个功能发挥作用！任何指针都将不胜感激。

这将按距离排列结果。取消对行的注释，以按与点的距离过滤

solr.Query(SolrQuery.All,
                              new QueryOptions
                                  {
                                      FilterQueries = filterQueries.ToArray(), // add filter items
                                      OrderBy = new[] { new SolrNet.SortOrder("geodist()", Order.ASC) },
                                      ExtraParams = new Dictionary<string, string>
                                          {
                                              // uncomment for filtering by distance
                                              //{"fq", "{!geofilt}"},
                                              //{"d", distance.ToString(CultureInfo.InvariantCulture)} replace distance with your radius filter
                                              {"sfield", "lat_long"}, // replace lat_long with your field in solr that stores the lat long values
                                              {"pt", "-33.858727,151.213199"}, // this is the point of reference
                                                                                        }
                                  });

solr.Query（SolrQuery.All，
新查询选项
{
FilterQueries=FilterQueries.ToArray（），//添加筛选器项
OrderBy=new[]{new SolrNet.SortOrder（“geodist（）”，Order.ASC）}，
ExtraParams=新字典
{
//取消按距离过滤的注释
//{“fq”，{！geofilt}，
//{“d”，distance.ToString（CultureInfo.InvariantCulture）}用半径过滤器替换距离
{“sfield”，“lat_long”}，//将lat_long替换为solr中存储lat long值的字段
{“pt”，“-33.858727151.213199”}，//这是参考点
}
});

options.ExtraParams = new Dictionary<string, string>
{
    {"d", "1"},                        
    {"sField", "LatLong"},
    {"pt", latitudeString + "," + longitudeString},
    {"fq", "{!geofilt}"},
    {"sort", "geodist() asc"}
};

SEVERE: org.apache.solr.common.SolrException: can not sort on unindexed field: geodist()

solr.Query(SolrQuery.All,
                              new QueryOptions
                                  {
                                      FilterQueries = filterQueries.ToArray(), // add filter items
                                      OrderBy = new[] { new SolrNet.SortOrder("geodist()", Order.ASC) },
                                      ExtraParams = new Dictionary<string, string>
                                          {
                                              // uncomment for filtering by distance
                                              //{"fq", "{!geofilt}"},
                                              //{"d", distance.ToString(CultureInfo.InvariantCulture)} replace distance with your radius filter
                                              {"sfield", "lat_long"}, // replace lat_long with your field in solr that stores the lat long values
                                              {"pt", "-33.858727,151.213199"}, // this is the point of reference
                                                                                        }
                                  });