阻止Mongoose为子文档数组项创建_id属性

很简单，您可以在以下子模式中定义它：

var mongoose = require("mongoose");var subSchema = mongoose.Schema({    //your subschema content},{ _id : false });var schema = mongoose.Schema({    // schema content    subSchemaCollection : [subSchema]});var model = mongoose.model('tablename', schema);