按照《mongdb权威指南》当使用version 3.4.1版本的mongodb，其中使用batchInsert函数进行对students集合进行批量插入
db.students.batchInsert([{"classid" : 1, "age" : 20, "name" : "kobe"}, {"classid" : 1, "age" : 23, "name" : "nash"}, {"classid" : 2, "age" : 18, "name" : "james"}, {"classid" : 2, "age" : 19, "name" : "wade"}, {"classid" : 2, "age" : 19, "name" : "bosh"}, {"classid" : 2, "age" : 25, "name" : "allen"}, {"classid" : 1, "age" : 19, "name" : "howard"}, {"classid" : 1, "age" : 22, "name" : "paul" }, {"classid" : 2, "age" : 24, "name" : "shane"}]);
插入失败，报如下错误：
2018-02-26T21:08:40.382+0800 E QUERY [main] TypeError: db.students.batchInsert is not a function :@(shell):1:1
原因：书中示例batchInsert是按照version：2.4.0运行的，到本版本已经废弃该方法
解决方法：直接使用insert实现对students集合批量插入
db.students.insert([{"classid" : 1, "age" : 20, "name" : "kobe"}, {"classid" : 1, "age" : 23, "name" : "nash"}, {"classid" : 2, "age" : 18, "name" : "james"}, {"classid" : 2, "age" : 19, "name" : "wade"}, {"classid" : 2, "age" : 19, "name" : "bosh"}, {"classid" : 2, "age" : 25, "name" : "allen"}, {"classid" : 1, "age" : 19, "name" : "howard"}, {"classid" : 1, "age" : 22, "name" : "paul" }, {"classid" : 2, "age" : 24, "name" : "shane"}]); db.students.find()
控制台输出如下，插入成功
// Command #1: // Execution time: 0.0s // Result: BulkWriteResult({ "writeErrors" : [ ], "writeConcernErrors" : [ ], "nInserted" : 9, "nUpserted" : 0, "nMatched" : 0, "nModified" : 0, "nRemoved" : 0, "upserted" : [ ] }) // Command #2: // db.students.find() // Execution time: 0.0s // Result: { "_id" : ObjectId("5a940a3f379afc334959cacc"), "classid" : 1, "age" : 20, "name" : "kobe" } { "_id" : ObjectId("5a940a3f379afc334959cacd"), "classid" : 1, "age" : 23, "name" : "nash" } { "_id" : ObjectId("5a940a3f379afc334959cace"), "classid" : 2, "age" : 18, "name" : "james" } { "_id" : ObjectId("5a940a3f379afc334959cacf"), "classid" : 2, "age" : 19, "name" : "wade" } { "_id" : ObjectId("5a940a3f379afc334959cad0"), "classid" : 2, "age" : 19, "name" : "bosh" } { "_id" : ObjectId("5a940a3f379afc334959cad1"), "classid" : 2, "age" : 25, "name" : "allen" } { "_id" : ObjectId("5a940a3f379afc334959cad2"), "classid" : 1, "age" : 19, "name" : "howard" } { "_id" : ObjectId("5a940a3f379afc334959cad3"), "classid" : 1, "age" : 22, "name" : "paul" } { "_id" : ObjectId("5a940a3f379afc334959cad4"), "classid" : 2, "age" : 24, "name" : "shane" }
