在node.js中連接mongodb時，mongoose.connect('mongodb://localhost:27018', function(error){    // 連接數(shù)據(jù)庫之后的回調(diào)    if(error){        console.log('連接數(shù)據(jù)庫失敗');        console.log(error);    }    else{        console.log('連接數(shù)據(jù)庫成功');        // 如果連接成功，就可以通過mongoose模塊操作數(shù)據(jù)庫        //連接成功，再啟動服務(wù)        app.listen(8080);    }});報(bào)錯 ：(node:12596) DeprecationWarning: open() is deprecated in mongoose >= 4.11.0, use openUri()instead, or set the useMongoClient option if using connect() or createConnection(). See http://mongoosejs.com/docs/co...連接數(shù)據(jù)庫成功(node:12596) DeprecationWarning: Mongoose: mpromise (mongoose's default promise library) is deprecated, plug in your own promise library instead: http://mongoosejs.com/docs/pr...