node.js获取php curl post数据req.body为空的处理

function addCurl($url, $type="get", $postData=null)  
    {  
        $ch = curl_init();  
        $headers[] = 'Connection: Keep-Alive';  
        $headres[] = 'Content-Type: application/x-www-form-urlencoded;charset=utf-8';         
        $headers[] = 'Content-Length: ' . strlen(json_encode($postData));  
        //$headres[] = 'Content-Type: application/json';  
        //$headres[] = 'Content-Type: text/html';  
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);  
        curl_setopt($ch, CURLOPT_HEADER, 0);  
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);  
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  
        if ($type=="get") {  
            curl_setopt($ch, CURLOPT_POST, 0);  
        } else {  
            curl_setopt($ch, CURLOPT_POST, 1);  
            curl_setopt($ch, CURLOPT_POSTFIELDS, urlencode(json_encode($postData)));  
        }  
        curl_setopt($ch, CURLOPT_URL, $url);  
        $data = curl_exec($ch);  
        $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);  
          
        if (curl_errno($ch)) {  
            echo 'Curl error: ' . curl_error($ch) . PHP_EOL;  
            curl_close($ch);  
            return false;  
        }   
        curl_close($ch);  
        return ($code == 200) ? $data : "server error,code: . {$code}";  
    }

var express = require('express')  
var bodyParser = require('body-parser')  
  
var app = express()  
var urlencodedParser = bodyParser.urlencoded({ extended: false })  
app.use(urlencodedParser, function (req, res) {  
  res.setHeader('Content-Type', 'text/plain')  
  res.write('you posted:\n')  
  res.end(JSON.stringify(req.body, null, 2))  
})  
  
app.listen(3000, function() {  
    console.log('Server is running')  
})

// determine if request should be parsed  
    if (!shouldParse(req)) {  
      return ('skip parsing'), next()  
    }

function typeofrequest(req, types_) {  
  var types = types_  
  // no body  
  if (!hasbody(req)) {  
    return null  
  }  
  
  // support flattened arguments  
  if (arguments.length > 2) {  
    types = new Array(arguments.length - 1)  
    for (var i = 0; i < types.length; i++) {  
      types[i] = arguments[i + 1]  
    }  
  }  
  // request content type  
  var value = req.headers['content-type']  
  return typeis(value, types)  
}

curl_setopt($ch, CURLOPT_POSTFIELDS, urlencode(json_encode($postData)));