向遠程服務器發出請求

Question

我試圖通過express.js從我的角客戶端應用程序代理請求。這是中間件

app.use('/v1', function(req, res) { 
    var url = process.env.API_URL + req.url; 
    console.info('Proxing to: ', url); 

    var r = null; 

    switch(req.method) { 
     case 'POST': 
     r = request.post({uri: url, json: req.body }); 
     break; 
     case 'PUT': 
     r = request.put({uri: url, json: req.body }); 
     break; 

     default: 
     r = request(url); 
    } 

    console.log(r); 

    return req.pipe(r).pipe(res); 
}); 

快遞服務器正在運行http://localhost:3030。中間件適用於http://localhost:3030/v1的GET請求，但它不適用於POST或PUT請求。 當我發出PUT或POST請求時服務器被終止。這是錯誤

stream.js:74 
     throw er; // Unhandled stream error in pipe. 
    ^

Error: write after end 
    at ClientRequest.OutgoingMessage.write (_http_outgoing.js:426:15) 
    at Request.write (/Users/user/Projects/maxmc/node_modules/request/request.js:1514:27) 
    at end (/Users/user/Projects/maxmc/node_modules/request/request.js:552:18) 
    at Immediate._onImmediate (/Users/user/Projects/maxmc/node_modules/request/request.js:581:7) 
    at tryOnImmediate (timers.js:543:15) 
    at processImmediate [as _immediateCallback] (timers.js:523:5) 
error Command failed with exit code 1. 

我不能確定問題是什麼。

Answer 1

卸下bodyParser中間件修復了這個

//app.use(bodyParser.json()); 
//app.use(bodyParser.urlencoded({ extended: true })); 

Answer 2

嘗試使用下面的代碼

app.use('/v1', function(req, res) { 
    var url = process.env.API_URL + req.url; 
    console.info('Proxing to: ', url); 

    var r = null; 

    switch (req.method) { 
    case 'POST': 
     r = request.post({ 
     uri: url, 
     json: req.body 
     }); 
     return req.pipe(r).pipe(res); 
    case 'PUT': 
     r = request.put({ 
     uri: url, 
     json: req.body 
     }); 
     return req.pipe(r).pipe(res); 

    default: 
     r = request(url); 
     return req.pipe(r).pipe(res); 
    } 

    //console.log(r); 

    //return req.pipe(r).pipe(res); 
}); 

嘗試使用此代碼