我在 2.4 版下使用不同的 lon/lat 数据集得到了引用的错误。我升级到 2.6 并且能够在该数据集上使用 2dsphere 索引。但是，对于不同的数据集（以下摘录），我收到了关于尝试使用 2dshpere 进行索引的旧错误消息。错误消息摘录如下：
我收到错误时遇到同样的问题：无法从对象中提取地理键；畸形几何？该对象如下，已在 GeoJSONLint.com 上验证。另外，我使用的是 mongodb 2.6.1 版。这发生在我最近使用 2.4 版时，我升级到 2.6，然后解决了这个问题，但是我使用新的 geojson 数据集再次遇到错误。请，如果有人可以让我知道如何解决，那将非常有帮助。
{"type":"Feature",
"geometry": {
"type":"Polygon",
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]]},
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当我在上面运行 db.exposureByZip.ensureIndex({"geometry" : "2dsphere"}) 时，我收到以下错误：
{
"createdCollectionAutomatically" : false,
"numIndexesBefore" : 1,
"ok" : 0,
"errmsg" : "Can't extract geo keys from object, malformed geometry?: { _id: ObjectId('53a6be43beeb0a0246ae75bb'), geometry: { type: \"Polygon\", coordinates: [ [ [ -80.341942, 25.935059 ], [ -80.341995, 25.936712 ], [ -80.342026, 25.937851 ], [ -80.342026, 25.938393 ], [ -80.34211000000001, 25.939489 ], [ -80.342178, 25.942131 ], [ -80.342308, 25.942329 ], [ -80.342339, 25.94285 ], [ -80.342438, 25.944914 ], [ -80.342445, 25.945118 ], [ -80.34251399999999, 25.947062 ], [ -80.34253699999999, 25.947479 ], [ -80.342613, 25.949152 ], [ -80.34266700000001, 25.950306 ], [ -80.34271200000001, 25.951366 ], [ -80.34277299999999, 25.952713 ], [ -80.342857, 25.954611 ], [ -80.341438, 25.955782 ], [ -80.34020200000001, 25.956839 ], [ -80.33910400000001, 25.957079 ], [ -80.33831000000001, 25.957081 ], [ -80.336006, 25.957088 ], [ -80.33324399999999, 25.957096 ], [ -80.33178700000001, 25.957102 ], [ -80.32672100000001, 25.957117 ], [ -80.326714, 25.957117 ], [ -80.32444, 25.957127 ], [ -80.323616, 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"code" : 16755
}