mongodb在插入数据时报错

mongodb在执行

db.businesslog.insert({
... ... _id: ObjectId(7df78ad8902c),
... ... title: 'MongoDB Overview',
... ... description: 'MongoDB is no sql database'
... ... })

时报[thread1] SyntaxError: identifier starts immediately after numeric literal @(shell):2:14的错误
解决办法：
插入时不插入Id由数据库自动生成即可，如：去掉上述语句中的_id: ObjectId(7df78ad8902c)