name:"xiaoming"}) WriteResult({ "nInserted" : 1 }) > db.stu.find() { "_id" : ObjectId("5711a253c95cb3db6c1bd2b9"), "sn" : 1, "name" : "xiaoming" } #增加单个文档并指定_id > db.stu.insert({_id:2,sn:002,name:"hanmmm"}) name:"hanmmm"}) WriteResult({ "nInserted" : 1 }) > db.stu.find() { "_id" : ObjectId("5711a253c95cb3db6c1bd2b9"), "sn" : 1, "name" : "xiaoming" } { "_id" : 2, "sn" : 2, "name" : "hanmmm" } #增加多个文档 > ObjectId("5711a253c95cb3db6c1bd2b9"), "sn" : 1, "name" : "xiaoming" } { "_id" : 2, "sn" : 2, "name" : "hanmmm" } 快速入门 10 { "_id" : 3, "sn" : 2, "name" : "xiaogang" } { "_id" : ObjectId("5711a2c9c95cb3db6c1bd2ba")