使用Express和HTTPS.get或HTTPS.request的最佳方法

时间:2014-11-20 03:23:53

标签: javascript node.js rest express https

我正在尝试使用简单的app.js(node.js)在Micro BOSH上进行REST调用。这涉及通过HTTPS在端口25555上调用url进行身份验证,并且不对SSL认证进行验证。我找到了通过HTTPS.requestHTTPS.get获取JSON结果的方法。

问题是我和我想使用express作为Web服务器。现在,我在执行这两项操作时获得了以下错误(我的https.requestapp.get('/', function(req, res) {...})之外的函数的一部分:

Error: Can't remove headers after they are sent.
    at ServerResponse.OutgoingMessage.removeHeader (http.js:718:11)
    at ServerResponse.send (/Users/dev/bes/bes-rest/node_modules/express/lib/response.js:179:10)
    at /Users/dev/bes/bes-rest/app.js:95:7
    at Layer.handle [as handle_request] (/Users/dev/bes/bes-rest/node_modules/express/lib/router/layer.js:82:5)
    at next (/Users/dev/bes/bes-rest/node_modules/express/lib/router/route.js:100:13)
    at Route.dispatch (/Users/dev/bes/bes-rest/node_modules/express/lib/router/route.js:81:3)
    at Layer.handle [as handle_request] (/Users/dev/bes/bes-rest/node_modules/express/lib/router/layer.js:82:5)
    at /Users/dev/bes/bes-rest/node_modules/express/lib/router/index.js:235:24
    at Function.proto.process_params (/Users/dev/bes/bes-rest/node_modules/express/lib/router/index.js:313:12)
    at /Users/dev/bes/bes-rest/node_modules/express/lib/router/index.js:229:12

我感觉到因为我使用快速组合与http(创建服务器)然后https用于REST调用,应用程序正在以这种方式做出反应。但是在使用Express时如何才能最好地进行REST调用?

以下是我正在使用的内容:

var express        = require('express');
var app            = express();
var server         = require('http').Server(app);
var request        = require('request');
var path           = require('path');
var https_er       = require('https');

感谢您提供任何暗示。

以下是我用来进行REST调用的代码:

var _deployments = {};
function getDeployments() {
   var options = {
    host: resturl,
    port: restport,
    path: '/deployments',
    method: 'GET',
    rejectUnauthorized: false,
    requestCert: true,
    agent: false,
    headers: {
     'Authorization': 'Basic ' + new Buffer(rest_uname + ':' + rest_pword).toString('base64')}
  };
  var req = https_er.get(options, function(res) {
    console.log('STATUS: ' + res.statusCode);
    console.log('HEADERS: ' + JSON.stringify(res.headers));

    // Buffer the body entirely for processing as a whole.
    var bodyChunks = [];
    res.on('data', function(chunk) {
      // You can process streamed parts here...
      bodyChunks.push(chunk);
    }).on('end', function() {
      var body = Buffer.concat(bodyChunks);
      console.log('BODY: ' + body);
      _deployments = body;
    })
  });
  req.on('error', function(e) {
    console.log('problem with request: ' + e.message);
  });
  req.end();
}

到目前为止这是app.get:

app.get('/', function(req, res) {

  res.send('Hello!');
  res.send(JSON.parse(_deployments));  // this is the line 95

});
server.listen(port);

2 个答案:

答案 0 :(得分:1)

你不能有两个" res.send"语句。

  // one of these two statements has to go
  res.send('Hello!');
  res.send(JSON.parse(_deployments));

答案 1 :(得分:0)

您可以执行以下操作: -

app.get(' /',function(req,res){

res.send({" _deployments":JSON.parse(_deployments)});

}); server.listen(端口);