NodeJS Connect URL重写中间件组件

NodeJS URL重写中间件组件

var connect = require("connect");var url = require("url");//先使用rewrite中间件组件基于缩略名重写URL，然后将控制权转交给showPost组件var app = connect().use(rewrite).use(showPost).listen(3000);var path = url.parse(req.url).pathname;function rewrite(req,res,next){var match = path.match(/^\/blog\/posts\/(.+)/);//只针对/blog/posts 请求执行查找if(match){//假想方法findPostIdBySlugfindPostIdBySlug(match[1],fuction(err,id){if(err) return next(err);if(!id) return next(new Error("User not found"));//重写req.url属性，以便后续中间件可以使用真实的IDreq.url = "/blog/posts/" + id;next();});}else{next();}}