我用的express為4.13.1，mongoose為4.4.4，而且我跟老師講的目錄結(jié)構(gòu)不太一樣，用的webstorm新建的nodejs項目在錄入頁post后出現(xiàn)如下錯誤：_movie.save(function(err,?movie){ ????????????^ TypeError:?Cannot?read?property?'save'?of?null這是我出現(xiàn)錯誤的代碼位置：//admin?post?movie router.post('/admin/movie/new',?function(req,?res){ ??var?id?=?req.body.movie._id; ??var?movieObj?=?req.body.movie; ??var?_movie; ??if?(id?!==?'undefined'){ ????Movie.findById(id,?function(err,?movie){ ??????if?(err){ ????????console.log(err); ??????} ??????_movie?=?_.extend(movie,?movieObj); ??????_movie.save(function(err,?movie){ ????????if?(err){ ??????????console.log(err); ????????} ????????res.redirect('/movie/'?+?movie._id); ??????}); ????}); ??}else?{ ????_movie?=?new?Movie({ ??????doctor:?movieObj.doctor, ??????title:?movieObj.title, ??????country:?movieObj.country, ??????language:?movieObj.language, ??????poster:?movieObj.poster, ??????year:?movieObj.year, ??????summary:?movieObj.summary, ??????flash:?movieObj.flash ????}); ????_movie.save(function(err,?movie){ ??????if?(err){ ????????console.log(err); ??????} ??????res.redirect('/movie/'?+?movie._id); ????}); ??} });var?mongoose?=?require('mongoose'); var?MovieSchema?=?new?mongoose.Schema({ ????title:?String, ????doctor:?String, ????language:?String, ????country:?String, ????summary:?String, ????flash:?String, ????poster:?String, ????year:?Number, ????meta:?{ ????????createAt:?{ ????????????type:?Date, ????????????default:?Date.now() ????????}, ????????updateAt:?{ ????????????type:?Date, ????????????default:?Date.now() ????????} ????} }); MovieSchema.pre('save',?function(next){ ????if?(this.isNew){ ????????this.meta.createAt?=?this.meta.updateAt?=?Date.now(); ????}else?{ ????????this.meta.updateAt?=?Date.now(); ????} ????next(); }); MovieSchema.statics?=?{ ????fetch:?function(callback){ ????????return?this ????????????.find({}) ????????????.sort('meta.updateAt') ????????????.exec(callback) ????}, ????findById:?function(id,?callback){ ????????return?this ????????????.findOne({_id:?id}) ????????????.exec(callback) ????} }; module.exports?=?MovieSchema;var?mongoose?=?require('mongoose'); var?MovieSchema?=?require('../schemas/movie'); var?Movie?=?mongoose.model('Movie',?MovieSchema); module.exports?=?Movie;求大神們幫忙！??！