您无法避免错误，但可以继续插入。请看这里。例如：

MongoDB Enterprise replset:PRIMARY> db.products.insert(
    ...    [
    ...      { _id: 20, item: "lamp", qty: 50, type: "desk" },
    ...      { _id: 21, item: "lamp", qty: 20, type: "floor" },
    ...      { _id: 21, item: "lamp", qty: 20, type: "floor" },
    ...      { _id: 22, item: "bulk", qty: 100 }
    ...    ],
    ...    { ordered: false }
    ... )
    BulkWriteResult({
            "writeErrors" : [
                    {
                            "index" : 2,
                            "code" : 11000,
                            "errmsg" : "E11000 duplicate key error collection: newdb1.products index: _id_ dup key: { _id: 21.0 }",
                            "op" : {
                                    "_id" : 21,
                                    "item" : "lamp",
                                    "qty" : 20,
                                    "type" : "floor"
                            }
                    }
            ],
            "writeConcernErrors" : [ ],
            "nInserted" : 3,
            "nUpserted" : 0,
            "nMatched" : 0,
            "nModified" : 0,
            "nRemoved" : 0,
            "upserted" : [ ]
    })
    MongoDB Enterprise replset:PRIMARY> db.products.find()
    { "_id" : 20, "item" : "lamp", "qty" : 50, "type" : "desk" }
    { "_id" : 21, "item" : "lamp", "qty" : 20, "type" : "floor" }
    { "_id" : 22, "item" : "bulk", "qty" : 100 }

你可能会看到，如果你删除{ ordered: false }，唯一插入的记录将是第一个错误发生之前的记录：

MongoDB Enterprise replset:PRIMARY> db.products.find()
{ "_id" : 20, "item" : "lamp", "qty" : 50, "type" : "desk" }
{ "_id" : 21, "item" : "lamp", "qty" : 20, "type" : "floor" }