XMLHttpRequest 无法加载请求的资源上不存在“Access-Control-Allow-Origin"标头.来源 'http://localhost:3000' 谷歌地图

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问题描述

我是 React js 的新手，我正在尝试根据用户输入来简化动态更改地图但对于特定位置的搜索请求，此错误会出现

I am new to React js I am trying to simple dynamically changing map with respected to user input But for specific place seach request this error rises

XMLHttpRequest 无法加载https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=undef...ined&radius=1000&keyword=fdtbf&key=myapikey.请求中不存在Access-Control-Allow-Origin"标头资源.Origin 'http://localhost:3000' 因此是不允许的访问.

这是我的节点js代码

import express from 'express';
import path from 'path';
import bodyParser from 'body-parser';

//Import To Pord
import api from './routes/api';
import auth from './routes/auth'
import cookieParser from 'cookie-parser';
import {LoginCheck} from './middleware/authCheck';
import cors from 'cors';


//All Webpack Stuff
import webpackConfig from '../../webpack.config.dev';
import webpack from 'webpack';
import webpackMiddleware from 'webpack-dev-middleware'
import webpackHotMidleware from 'webpack-hot-middleware';


//Server Side Rendering Stuff
import {match, RouterContext  } from 'react-router';
import { Provider } from 'react-redux';
import { dispatch } from 'redux';
import { renderToString, renderToStaticMarkup } from 'react-dom/server';
import reducer from '../../src/client/Reducers';
import routes from '../client/routes';
import thunk from 'redux-thunk';
import { createStore ,applyMiddleware} from 'redux'
import React from 'react'
import Helmet from 'react-helmet';
import serialize from 'serialize-javascript';


//PassPort Stuff Import This




let app = express();
app.use(bodyParser.json());
app.use(express.static('public'))


const compiler = webpack(webpackConfig);

app.use(webpackMiddleware(compiler, {
    hot: true,
    publicPath: webpackConfig.output.publicPath,
    noInfo: true
}));

app.use(webpackHotMidleware(compiler));



app.use(cors());
app.use(cookieParser('sdkhcvlsd684684JJJklvblsdkuvgblsduvblsidvksdjbvlsjvuywlsfvliusdgv'));
//Check Auth MiddleWare
app.use(LoginCheck)
//Passport Api
app.use('/auth',auth);
//Our Api
app.use('/p',api);



app.get('/*', (req, res,next) => {

    // res.sendFile(path.join(__dirname, '../../index.html'))
    // Server Side Rendering Starts
    match({routes:routes(),location:req.url},(err,redirectLocation,renderProps) => {
        if (err) return next(err);


        if (redirectLocation) {
            return res.redirect(302, redirectLocation.pathname + redirectLocation.search)
        }

        // if (!renderProps) {
        //     res.redirect('/404')
        // }

        const components = renderProps.components;

        const Comp = components[components.length - 1].WrappedComponent;

        const fetchData = (Comp && Comp.fetchData) || (() => Promise.resolve())

        const initialState = {}

        const store = createStore(reducer, initialState, applyMiddleware(thunk));


        const { location, params, history } = renderProps

        fetchData({ store, location, params, history }).then(() => {
            const body = renderToString(
                <Provider store={store}>
                    <RouterContext {...renderProps} />
                </Provider>
            )

            const state = store.getState();
            // console.log(state)


            let head = Helmet.rewind();
            res.header('Access-Control-Allow-Origin', "*");
            res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
            res.header('Access-Control-Allow-Headers', 'Content-Type');
            res.send(`<!DOCTYPE html>
          <html>
            <head>
               ${head.title}
                ${head.meta}
                ${head.link}
            </head>
            <body>
              <div id="app" >${body}</div>
              <script>window.__STATE__=${JSON.stringify(state)}</script>

              <script src="/bundle.js"></script>
            </body>
          </html>`)
        })
            .catch((err) => next(err))



    })
});


app.listen(3000 ,() => {
    console.log('Listening')
});

这是我的 axios 请求

this is my axios request

export function getPlaceFromCoords(term,coords) {
    // https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=13.0826802,80.2707184&radius=500&keyword=parks&key=AIzaSyAZbur2hq7p3UxjYrA2_G4ctpswFi0pO3A
    console.log(coords)
    return dispatch => {
        return axios.get(`https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=${coords.lat},${coords.lng}&radius=1000&keyword=${term}&key=${config.MAP_API}`).then(response => {
            return response.data
        })
    }

}

places

XMLHttpRequest 无法加载请求的资源上不存在“Access-Control-Allow-Origin"标头.来源 'http://localhost:3000' 谷歌地图

问题描述

推荐答案