java.util.NoSuchElementException已解决

遍历MongoCursor<Document>报错信息:

java.util.NoSuchElementException

at com.mongodb.MongoBatchCursorAdapter.next(MongoBatchCursorAdapter.java:52)

解决方法：

执行到Document document = sendIterator.next();这句话就报错，因为sendIterator没有元素，先加sendIterator.hasNext()判断一下

MongoCursor<Document> sendIterator = sendAggregate.iterator();

Document document = sendIterator.next();

修改为：

while(sendIterator.hasNext()){

Document document = sendIterator.next();

}