MongoDB java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integer

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MongoDB java.<a href=https://www.elefans.com/category/jswz/34/1768519.html style= lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integer"/>

MongoDB java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integer

详细报错如下：

java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integerat org.bson.Document.getInteger(Document.java:244) ~[bson-4.0.4.jar:na]at com.mongodb.client.gridfs.GridFSDownloadStreamImpl.getChunk(GridFSDownloadStreamImpl.java:223) ~[mongodb-driver-sync-4.0.4.jar:na]at com.mongodb.client.gridfs.GridFSDownloadStreamImpl.getBuffer(GridFSDownloadStreamImpl.java:277) ~[mongodb-driver-sync-4.0.4.jar:na]at com.mongodb.client.gridfs.GridFSDownloadStreamImpl.read(GridFSDownloadStreamImpl.java:101) ~[mongodb-driver-sync-4.0.4.jar:na]at com.mongodb.client.gridfs.GridFSDownloadStreamImpl.read(GridFSDownloadStreamImpl.java:91) ~[mongodb-driver-sync-4.0.4.jar:na]at com.mongodb.client.gridfs.GridFSDownloadStreamImpl.read(GridFSDownloadStreamImpl.java:82) ~[mongodb-driver-sync-4.0.4.jar:na]

报错的位置：

原因：

库中n是Double类型

此处类型转换异常

关于 chunks.n

正常情况下库中n是Int32

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MongoDB java.lang.ClassCastException: java.lang.Double cannot be cast to java.la

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