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add actix-web-cors example

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# Actix-web-CORS
## start
1 - backend server
```bash
$ cd actix_web_cors/backend
$ cargo run
```
2 - fontend server
```bash
$ cd actix_web_cors/fontend
$ npm install
$ npm run dev
```
then open broswer 'http://localhost:1234/'

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/target/
**/*.rs.bk
Cargo.lock

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examples/actix_web_cors/backend/Cargo.toml Normal file
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[package]
name = "Actix-web-CORS"
version = "0.1.0"
authors = ["krircc <krircc@aliyun.com>"]
[dependencies]
serde = "^1.0.0"
serde_derive = "^1.0.0"
serde_json = "^1.0.0"
http = "^0.1.0"
num_cpus = "1.0"
actix = "^0.4.0"
actix-web = { git = "https://github.com/actix/actix-web" }
dotenv = "^0.10.0"
env_logger = "^0.5.0"
futures = "0.1"

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#![allow(warnings)]
#[macro_use] extern crate serde_derive;
extern crate serde;
extern crate serde_json;
extern crate futures;
extern crate num_cpus;
extern crate actix;
extern crate actix_web;
extern crate env_logger;
extern crate http;
use actix::*;
use actix_web::*;
use std::env;
mod user;
use http::header;
use actix_web::middleware::cors;
use user:: info;
fn main() {
::std::env::set_var("RUST_LOG", "actix_web=info");
let _ = env_logger::init();
let sys = actix::System::new("Actix-web-CORS");
env::set_var("RUST_BACKTRACE", "1");
HttpServer::new(
|| Application::new()
.middleware(middleware::Logger::default())
.resource("/user/info", |r| {
cors::Cors::build()
.allowed_origin("http://localhost:1234")
.allowed_methods(vec!["GET", "POST"])
.allowed_headers(vec![header::AUTHORIZATION, header::ACCEPT])
.allowed_header(header::CONTENT_TYPE)
.max_age(3600)
.finish().expect("Can not create CORS middleware")
.register(r);
r.method(Method::POST).a(info);
}))
.bind("127.0.0.1:8000").unwrap()
.shutdown_timeout(200)
.start();
let _ = sys.run();
}

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use actix::*;
use actix_web::*;
use futures::future::Future;
#[derive(Deserialize,Serialize, Debug)]
struct Info {
username: String,
email: String,
password: String,
confirm_password: String,
}
pub fn info(mut req: HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>> {
req.json()
.from_err()
.and_then(|res: Info| {
Ok(httpcodes::HTTPOk.build().json(res)?)
}).responder()
}

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{
"presets": ["env"]
}

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.DS_Store
node_modules/
/dist/
.cache
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# Editor directories and files
.idea
*.suo
*.ntvs*
*.njsproj
*.sln

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>webapp</title>
</head>
<body>
<div id="app"></div>
<script src="./src/main.js"></script>
</body>
</html>

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{
"name": "actix-web-cors",
"version": "0.1.0",
"description": "webapp",
"main": "main.js",
"scripts": {
"dev": "rm -rf dist/ && NODE_ENV=development parcel index.html",
"build": "NODE_ENV=production parcel build index.html",
"test": "echo \"Error: no test specified\" && exit 1"
},
"license": "ISC",
"dependencies": {
"vue": "^2.5.13",
"vue-router": "^3.0.1",
"axios": "^0.17.1"
},
"devDependencies": {
"babel-preset-env": "^1.6.1",
"parcel-bundler": "^1.4.1",
"parcel-plugin-vue": "^1.5.0"
}
}

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<template>
<div id="app">
<div id="content">
<div id="title">
<a to="#">SignUp</a>
</div>
<input type="text" name="username" placeholder="Username" v-model="Username" required />
<input type="text" name="email" placeholder="E-mail" v-model="Email" required />
<input type="password" name="password" placeholder="Password" v-model="Password" required/>
<input type="password" name="confirm_password" placeholder="Confirm password" v-model="ConfirmPassword" required/><br/>
<button id="submit" @click="signup">Sign up</button>
<div id="user-info">
<p>Click Above 'Sign up' Button <br> Then Get Your Signup Info!</p>
<p>email : {{ email }}</p>
<p>username ：{{ username }}</p>
<p>password : {{ password }}</p>
</div>
</div>
</div>
</template>
<script>
import axios from 'axios'
export default {
name: 'app',
data () {
return {
Username: '',
Email: '',
Password: '',
ConfirmPassword: '',
email: '',
username: '',
password: ''
}
},
methods: {
signup () {
var username = this.Username
var email = this.Email
var password = this.Password
var confirm_password = this.ConfirmPassword
console.log(email)
axios.post('http://localhost:8000/user/info', {
username: username,
email: email,
password: password,
confirm_password: confirm_password
})
.then(response => {
console.log(response.data)
this.email = response.data.email
this.username = response.data.username
this.password = response.data.password
})
.catch(e => {
console.log(e)
})
}
}
}
</script>
<style scoped>
#content {
width: 250px;
margin: 0 auto;
padding-top: 33px;
}
#title {
padding: 0.5rem 0;
font-size: 22px;
font-weight: bold;
background-color:bisque;
text-align: center;
}
input[type="text"],
input[type="password"] {
margin: 6px auto auto;
width: 250px;
height: 36px;
border: none;
border-bottom: 1px solid #AAA;
font-size: 16px;
}
#submit {
margin: 10px 0 20px 0;
width: 250px;
height: 33px;
background-color:bisque;
border: none;
border-radius: 2px;
font-family: 'Roboto', sans-serif;
font-weight: bold;
text-transform: uppercase;
transition: 0.1s ease;
cursor: pointer;
}
input[type="checkbox"] {
margin-top: 11px;
}
dialog {
top: 50%;
width: 80%;
border: 5px solid rgba(0, 0, 0, 0.3);
}
dialog::backdrop{
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0, 0, 0, 0.7);
}
#closeDialog {
display: inline-block;
border-radius: 3px;
border: none;
font-size: 1rem;
padding: 0.4rem 0.8em;
background: #eb9816;
border-bottom: 1px solid #f1b75c;
color: white;
font-weight: bold;
text-align: center;
}
#closeDialog:hover, #closeDialog:focus {
opacity: 0.92;
cursor: pointer;
}
#user-info {
width: 250px;
margin: 0 auto;
padding-top: 44px;
}
@media only screen and (min-width: 600px) {
#content {
margin: 0 auto;
padding-top: 100px;
}
}
</style>

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import Vue from 'vue'
import App from './app'
new Vue({
el: '#app',
render: h => h(App)
})
if (module.hot) {
module.hot.accept();
}