express3.* 路由不能适配gbk编码的url 求解！！
app.get("test/:keyword.html",function(req, res){
var keyword = req.params["keyword"];
console.log(keyword);
});
测试 url: localhost:3000/test/%B2%D8%BA%EC%BB%A8.html
报错：
Error: Failed to decode param '%B2%D8%BA%EC%BB%A8'
at Route.match (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_module
s\express\lib\router\route.js:65:17)
at Router.matchRequest (E:\work\projects\src\mZhan\1.x\Code\source\msite\nod
e_modules\express\lib\router\index.js:244:17)
at pass (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_modules\expre
ss\lib\router\index.js:104:30)
at Router._dispatch (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_m
odules\express\lib\router\index.js:173:5)
at Object.router (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_modu
les\express\lib\router\index.js:33:10)
at next (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_modules\expre
ss\node_modules\connect\lib\proto.js:193:15)
at Object.methodOverride [as handle] (E:\work\projects\src\mZhan\1.x\Code\so
urce\msite\node_modules\express\node_modules\connect\lib\middleware\methodOverri
de.js:48:5)
at next (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_modules\expre
ss\node_modules\connect\lib\proto.js:193:15)
at Object.urlencoded [as handle] (E:\work\projects\src\mZhan\1.x\Code\source
\msite\node_modules\express\node_modules\connect\lib\middleware\urlencoded.js:41
:37)
at next (E:\work\projects\src\mZhan\1.x\Code\source\msite\node_modules\expre
ss\node_modules\connect\lib\proto.js:193:15)
10 回复
@alsotang path里面肯定是没有中文，是采用了后端使用了按gbk字符encode的字符串。 而目前express路由匹配的时候直接使用的是decodeURIComponent，这里就抛异常了。 有好的建议么？
[@Jason618](/user/Jason618) 我是说你需要对url预处理一下，就是把%B2%D8%BA%EC%BB%A8再encode一下，这样req.params接收过来就是%B2%D8%BA%EC%BB%A8了，不做处理的话req.params是无法解析的，它用的是 node-querystring ，只能处理ASCII和UTF-8。当然还有一种方法是直接取url然后正则之最后再iconv-lite，这样就不需要req.params了。
** 藏红花 **
function parser(){
var iconv = require('iconv-lite');
var convertUrl = function(url){
var reg = /(\%\S\S)+/gi;
var decodeStr = function(str){
var arr = str.split('%');
arr.shift();
var buf = new Buffer(arr.length);
arr.forEach(function(hex, i){
var v = parseInt(hex, 16);
buf[i] = v;
});
return iconv.decode(buf, 'gbk');
};
var result = url.match(reg).sort().reverse();
result.forEach(function(str){
url = url.replace(str, decodeStr(str));
});
return url
}
return function(req, res, next){
var url = req.originalUrl;
try{
decodeURIComponent(url)
}catch(e){
req.url = req.originalUrl = encodeURI(convertUrl(url));
}
next();
};
}
var express = require('express');
app = express();
app.use(parser());
app.get("/test/:keyword.html",function(req, res){
var keyword = req.params["keyword"];
console.log(keyword);
res.send(keyword);
});
app.listen(3000);
