Question

I've created the following login form and accompanying template:

main.rs

#[macro_use]
extern crate nickel;
extern crate mustache;
extern crate rustc_serialize;

use std::collections::HashMap;
use nickel::{Nickel, MediaType, HttpRouter};
use nickel::status::StatusCode;

fn main() {
    let mut server = Nickel::new();
    let mut router = Nickel::router();

    router.get("/", middleware!(|request, mut response| {
        response.set(StatusCode::Ok);
        response.set(MediaType::Html);
        return response.send_file("assets/login.tpl");
    }));

    router.post("/login", middleware!(|request, mut response| {
        response.set(StatusCode::Ok);
        response.set(MediaType::Html);

        let mut data: HashMap<&str, &str> = HashMap::new();
        data.insert("error", "hello");
        return response.render("assets/login.tpl", &data);
    }));

    server.utilize(router);
    server.listen("127.0.0.1:6767");
}

assets/login.tpl

<html lang="en">
    <head>
        <meta charset="utf8"/>
    </head>
    <body>
        <h1>Login</h1>
        <form method="post" action="login">
            <label for="email">Email</label>
            <input type="email" name="email"/>
            <br/>
            <label for="password">Password</label>
            <input type="password" name="password"/>
            <br/>
            <button type="submit">Login</button><br/>
            <a href="/register">Register</a>
        </form>
        {{error}}
    </body>
</html>

When I submit the form the first time, I see the "hello" message. If I submit the form again, I see "Not Found".

I can't figure out where the problem is.

Answer 1

问题是您正在发送POST数据而且它没有被读取，这会导致下一个请求（由于keepalive）。

要修复，您可以确保读取POST的正文，或者将Connection: Close添加到响应标头以防止保持活动状态。

FWIW：这是known issue in hyper，但镍应该添加它自己的解决方案，以防止混淆。如果您想关注此更新，请订阅Github上的issue Shepmaster logged。

Posting form data with nickel.rs works the first time, returns 404 subsequent times

1 个答案: