text: module.exports = function(dbType) {
      if(dbType == 'mongodb'){
          return {
              cookieSecret: 'myblog',
              db: 'db',
              host: 'localhost',
              port: 27017
          };
      }else if(dbType == 'mysql'){
      	return {
              cookieSecret: 'TomandJerry',
      		host: 'localhost',
      		user: 'root',
      		password: 'a12345',
      		database: 'blog',
              port: 3306
      	};
      }
  }
  