delta Import, the date format error：

[sunhuaxu]

com.mongodb.util.JSONParseException:
{'UpdateDate':{$ gt:{$date:'2017-12-12 07:14:38'}}}
^
at com.mongodb.util.JSONParser.read(JSON.java:302)
at com.mongodb.util.JSONParser.parseObject(JSON.java:263)
at com.mongodb.util.JSONParser.parse(JSON.java:228)
at com.mongodb.util.JSONParser.parseObject(JSON.java:264)
at com.mongodb.util.JSONParser.parse(JSON.java:228)
at com.mongodb.util.JSONParser.parse(JSON.java:156)
at com.mongodb.util.JSON.parse(JSON.java:98)
at com.mongodb.util.JSON.parse(JSON.java:79)
at org.apache.solr.handler.dataimport.MongoDataSource.getData(MongoDataSource.java:72)
at org.apache.solr.handler.dataimport.MongoDataSource.getData(MongoDataSource.java:86)
at org.apache.solr.handler.dataimport.MongoEntityProcessor.initQuery(MongoEntityProcessor.java:39)
at org.apache.solr.handler.dataimport.MongoEntityProcessor.nextModifiedRowKey(MongoEntityProcessor.java:65)
at org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextModifiedRowKey(EntityProcessorWrapper.java:267)
at org.apache.solr.handler.dataimport.DocBuilder.collectDelta(DocBuilder.java:801)
at org.apache.solr.handler.dataimport.DocBuilder.doDelta(DocBuilder.java:344)
at org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:224)
at org.apache.solr.handler.dataimport.DataImporter.doDeltaImport(DataImporter.java:444)
at org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:482)
at org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:461)