React / Node / Express和Google OAuth的CORS / CORB问题

时间:2018-10-09 19:50:24

标签: node.js reactjs express cors passport.js

我有一个React应用,试图将OAuth添加到Node / Express / MySQL后端。我的React应用程序托管在localhost:3000上,而快速服务器托管在localhost:4000上。我在react app的package.json文件中添加了“ proxy”:“ http://localhost:4000”,以将请求发送到服务器。 OAuth的授权Java来源为http://localhost:4000。授权重定向URI为http://localhost:4000/auth/google/redirect

这些是我尝试访问服务器上路由时在浏览器控制台中遇到的错误:

有人说所请求的资源上没有'Access-Control-Allow-Origin'标头。

另一个人说:“跨域读取阻止(CORB)阻止了跨域响应。...使用MIME类型为text / html的邮件。”

我不知道我在做什么错,从昨天开始我就一直被困住。

Failed to load https://accounts.google.com/o/oauth2/v2/auth?response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A4000%2Fauth%2Fgoogle%2Fredirect&scope=profile&client_id={clientiddeletedbyme}.apps.googleusercontent.com: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access.   

Cross-Origin Read Blocking (CORB) blocked cross-origin response https://accounts.google.com/o/oauth2/v2/auth?response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A4000%2Fauth%2Fgoogle%2Fredirect&scope=profile&client_id={iddeletedbyme}apps.googleusercontent.com with MIME type text/html. See https://www.chromestatus.com/feature/5629709824032768 for more details.

这是我的应用程序的package.json文件中的代码:

{
  "name": "workout_tracker",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "axios": "^0.18.0",
    "firebase": "^5.3.0",
    "jw-paginate": "^1.0.2",
    "jw-react-pagination": "^1.0.7",
    "normalize.css": "^8.0.0",
    "random-id": "0.0.2",
    "react": "^16.5.2",
    "react-dom": "^16.5.2",
    "react-headroom": "^2.2.2",
    "react-icons-kit": "^1.1.6",
    "react-redux": "^5.0.7",
    "react-router-dom": "^4.3.1",
    "react-scripts-cssmodules": "^1.1.10",
    "react-swipe-to-delete-component": "^0.3.4",
    "react-swipeout": "^1.1.1",
    "redux": "^4.0.0",
    "redux-thunk": "^2.3.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "devDependencies": {
    "redux-devtools-extension": "^2.13.5"
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ],
  "proxy":"http://localhost:4000"
}

这是我的应用程序中将请求发送到服务器的代码:

express=()=>{
axiosInstance.get("/google").then(res=>{
  console.log(res);
}).catch(err=>console.log(err));
}

这是服务器中的代码

   let express = require("express");
let cors= require("cors");
let mysql = require("mysql");
const util = require("util");
const passportSetup = require("./config/passport-setup");
const passport = require("passport");

let app = express();

let connection =mysql.createConnection({
    host: "localhost",
    user: "root",
    password: "root",
    database: "Workout_Tracker",
    socketPath: '/Applications/MAMP/tmp/mysql/mysql.sock'
});



app.use(cors(
{origin:"http://localhost:3000",
    credentials:true,
    allowHeaders:"Content-Type"
}
));

app.options("/google", cors());
app.get("/google", cors(), passport.authenticate("google",{

    scope:['profile']

}));

...omitted a bunch of SQL queries

app.listen(4000, () => console.log("Listening on port 4000!"));

3 个答案:

答案 0 :(得分:1)

我应该使用浏览器导航到那里,而不是使用AJAX请求终结点。我使用了<a>标签和href为“ http://localhost:4000”的标签,它按预期工作。

答案 1 :(得分:1)

这是您需要安装的新中间件的示例代码,以表示之前定义任何路由:

const cors = require('cors');

app.use('*', function(req, res, next) {
//replace localhost:8080 to the ip address:port of your server
res.header("Access-Control-Allow-Origin", "http://localhost:8080");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header('Access-Control-Allow-Headers', 'Content-Type');
res.header('Access-Control-Allow-Credentials', true);
next(); 
});

//enable pre-flight
app.options('*', cors());

但是在复制和粘贴之前,只是要知道您需要npm install cors --save才能导入cors。上面的示例代码仅表示:

  1. 我们允许使用其他IP地址访问您定义的所有路由的服务器
  2. 在标头中允许使用“ X-Requested-With”和“ Content-Type”参数。通常,您不必专门定义它们,但是拥有它们是很好的。
  3. 只有在将allow凭据设置为true的情况下,您的会话/ cookie才能在前端刷新页面期间存储,我认为这可能对您的未来开发有所帮助。
  4. 飞行前请求也将被允许,默认情况下,许多Http库将发送该请求。
  5. 对于您的前端,如果您正在使用axios,则确实需要:axios.create({ withCredentials: true });说:无论是回应还是表达都同意使用CORS。同样在其他http库中。

以下是一些文档,您可以查看: https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

答案 2 :(得分:0)

这是我的将CORS与expressJs一起使用的示例,这需要在后端或服务器端完成。服务器停止从外部而不是客户端访问其API。

// IP's allowed all access this server
let whitelist = ['http://localhost:3000', 'http://127.0.0.1:3000'];

let corsOptions = {
  origin: function (origin, callback) {
    if (whitelist.indexOf(origin) !== -1) {
      callback(null, true);
    } else {
      callback(new Error('Not allowed by CORS'));
    }
  }
};

// Cross-Origin Resource Sharing
app.use(cors(corsOptions));