javascript - Node.js http.request 结果作为变量返回

Question

全部，

我试图弄清楚如何将 node.js 代码中 https.request 的结果传递给变量。我有一个 https.request 设置，可以正确地将正确的信息传递到 SOAP API 并获取正确的响应。我的最终目标是将 https.request 的输出获取到一个可以使用 Express 调用的变量中。

这是我的代码块。

HTML:

                <div class="row">
                <div class="col-md-12" class="pull-left">
                    <p> TEST </p>
                    <p>{{soapreply}}</p>
                </div>

JS:

  app.post('/cucmmapper/submit', function (req, res) {
// FORM - DATA COLLECTION
var cucmpub = req.body.cucmpub;
var cucmversion = req.body.cucmversion;
var username = req.body.username;
var password = req.body.password;
var authentication = username + ":" + password;
var soapreplyx = '';

// SOAP - BUILD CALL
var https = require("https");
var headers = {
  'SoapAction': 'CUCM:DB ver=' + cucmversion + ' listCss',
  'Authorization': 'Basic ' + new Buffer(authentication).toString('base64'),
  'Content-Type': 'text/xml; charset=utf-8'
};

// SOAP - AXL CALL
var soapBody = new Buffer('<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://www.cisco.com/AXL/API/11.5">' +
  '<soapenv:Header/>' +
  '<soapenv:Body>' +
  '<ns:listCss sequence="?">' +
  '<searchCriteria>' +
  '<name>%</name>' +
  '</searchCriteria>' +
  '<returnedTags uuid="?">' +
  '<name>?</name>' +
  '<description>?</description>' +
  '<clause>?</clause>' +
  '</returnedTags>' +
  '</ns:listCss>' +
  '</soapenv:Body>' +
  '</soapenv:Envelope>');

// SOAP - OPTIONS
var options = {
  host: cucmpub, // IP ADDRESS OF CUCM PUBLISHER
  port: 8443, // DEFAULT CISCO SSL PORT
  path: '/axl/', // AXL URL
  method: 'POST', // AXL REQUIREMENT OF POST
  headers: headers, // HEADER VAR
  rejectUnauthorized: false // REQUIRED TO ACCEPT SELF-SIGNED CERTS
};

// SOAP - Doesn't seem to need this line, but it might be useful anyway for pooling?
options.agent = new https.Agent(options);

// SOAP - OPEN SESSION
var req = https.request(options, function (res) {
  res.setEncoding('utf8');
  res.on('data', function (d) {
    soapreplyx = d;
    console.log("Got Data: " + d);
  });
});

// SOAP - SEND AXL CALL
req.write(soapBody);
res.render('cucmmapper-results.html'), {
  'title': 'CUCM 2.1',
  'soapreply': soapreplyx
};
req.end();
req.on('error', function (e) {
  console.error(e);
});

});}

“console.log("Got Data: "+ d)”行正在从 API 获取正确的预期回复，但是，我不知道如何将该数据放入我的变量“soapreplyx”中，该变量在 Express 中更改为“soapreply”。

非常感谢您提供的任何帮助!

Answer 1

在调用 res.render() 之前，您不会等待请求响应，因此 soapreplyx 的值始终为 ''，其初始值。要纠正此问题，请在传递给 https.request() 回调的响应对象上添加一个 'end' 事件监听器。

您没有将响应 block 附加到您的 soapreplyx 变量，而是为每个连续的 block 重新分配其值。

let soapRequest = https.request(options, soapResponse => {
  soapResponse.on('data', chunk => {
    soapreplyx += chunk
  })

  soapResponse.on('end', () => {
    return res.render('cucmmapper-results.html', {
      title: 'CUCM 2.1',
      soapreply: soapreplyx
    })
  })
})

soapRequest.write(soapBody)
soapRequest.end()