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koa-generator生成的koa框架
localhost:3000/可以访问
localhost:3000/hi 不可以访问
localhost:3000/users 可以访问
localhost:3000//users/hi 可以访问
以前学过express,同样的结构没有问题
以下是代码
app.js
const Koa = require('koa');
const app = new Koa();
const router = require('koa-router')();
const views = require('koa-views');
const co = require('co');
const convert = require('koa-convert');
const json = require('koa-json');
const onerror = require('koa-onerror');
const bodyparser = require('koa-bodyparser')();
const logger = require('koa-logger');
const index = require('./routes/index');
const users = require('./routes/users');
// middlewares
app.use(convert(bodyparser));
app.use(convert(json()));
app.use(convert(logger()));
app.use(require('koa-static')(__dirname + '/public'));
app.use(views(__dirname + '/views', {
extension: 'jade'
}));
// logger
app.use(async (ctx, next) => {
const start = new Date();
await next();
const ms = new Date() - start;
console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
});
router.use('/', index.routes(), index.allowedMethods());
router.use('/users', users.routes(), users.allowedMethods());
app.use(router.routes(), router.allowedMethods());
// response
app.on('error', function(err, ctx){
console.log(err)
logger.error('server error', err, ctx);
});
module.exports = app;
routes里两个文件,index.js
var router = require('koa-router')();
router.get('/', function (ctx) {
ctx.body = 'this a index response!';
});
router.get('/hi', function (ctx) {
ctx.body = 'this a index/hi response!';
});
module.exports = router;
users.js
var router = require('koa-router')();
router.get('/', function (ctx, next) {
ctx.body = 'this a users response!';
});
router.get('/ok', function (ctx, next) {
ctx.body = 'this a users/ok response!';
});
module.exports = router;
PHPz2017-04-17 15:39:16
koa-router
的 nested routers
原理就是把两个路径合并在一起,所以按照你的代码路径应该是:
localhost:3000/
# 下面这个路径有问题
localhost:3000//hi
localhost:3000/users/
localhost:3000/users/ok
所以 localhost:3000/hi
是匹配不到的
有两种改法:
将 router.use('/', index.routes(), index.allowedMethods());
改为 router.use('', index.routes(), index.allowedMethods());
将 router.get('/hi', function (ctx){})
改为 router.get('hi', function (ctx){})
如果题主访问
localhost:3000//hi
也是无法访问的,这里并不是匹配不到,而是 koa 认为这个路径是Malicious Path
就直接抛 400 了,根本就没有到koa-router
环节。代码见:https://github.com/pillarjs/r...
prefix 参考源码:https://github.com/alexmingoi...