所有，我正在努力与node.js中的异步回调。我正在尝试发出两个HTTP请求，并在最后以单独的变量显示两者的返回数据。我正在尝试使用npm-async，但未能正确设置它。
非常感谢任何帮助或建议。
这是我的代码：
// MODULES - INCLUDES
var xml2js = require('xml2js');
var parser = new xml2js.Parser();
var async = require('async');
// FORM - DATA COLLECTION
var cucmpub = 'xxxx';
var cucmversion = 'xxxx';
var username = 'xxxx';
var password = 'xxxx';
// JS - VARIABLE DEFINITION - GLOBAL
var authentication = username + ":" + password;
var soapreplyx = '';
var cssx = null;
var spacer = '-----';
var rmline1 = '';
var rmline2 = '';
var rmline3 = '';
var rmline4 = '';
var rmbottomup1 = '';
var rmbottomup2 = '';
var rmbottomup3 = '';
var soapreplyp = '';
var partitionsx = null;
var rmline1p = '';
var rmline2p = '';
var rmline3p = '';
var rmline4p = '';
var rmbottomup1p = '';
var rmbottomup2p = '';
var rmbottomup3p = '';
// HTTP.REQUEST - BUILD CALL - GLOBAL
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 - CSS
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 - AXL CALL - PARTITIONS
var soapBody2 = 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:listRoutePartition sequence="?">' +
'<searchCriteria>' +
'<name>%</name>' +
'</searchCriteria>' +
'<returnedTags uuid="?">' +
'<name>?</name>' +
'</returnedTags>' +
'</ns:listRoutePartition>' +
'</soapenv:Body>' +
'</soapenv:Envelope>');
// HTTP.REQUEST - OPTIONS - GLOBAL
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
};
// HTTP.REQUEST - GLOBAL (Doesn't seem to need this line, but it might be useful anyway for pooling?)
options.agent = new https.Agent(options);
async.series([
function (callback) {
// HTTP.REQUEST - OPEN SESSION - CSS
var soapRequest = https.request(options, soapResponse => {
soapResponse.setEncoding('utf8');
soapResponse.on('data', chunk => {
soapreplyx += chunk
});
// HTTP.REQUEST - RESULTS + RENDER
soapResponse.on('end', () => {
// EDIT - SCRUB XML OUTPUT
var rmline1 = soapreplyx.replace(/<\?xml\sversion='1\.0'\sencoding='utf-8'\?>/g, '');
var rmline2 = rmline1.replace(/<soapenv:Envelope\sxmlns:soapenv="http:\/\/schemas.xmlsoap.org\/soap\/envelope\/">/g, '');
var rmline3 = rmline2.replace(/<soapenv:Body>/g, '');
var rmline4 = rmline3.replace(/<ns:listCssResponse\sxmlns:ns="http:\/\/www\.cisco\.com\/AXL\/API\/[0-9]*\.[0-9]">/g, '');
var rmbottomup1 = rmline4.replace(/<\/soapenv:Envelope>/g, '');
var rmbottomup2 = rmbottomup1.replace(/<\/soapenv:Body>/g, '');
var xmlscrubbed = rmbottomup2.replace(/<\/ns:listCssResponse>/g, '');
// console.log(xmlscrubbed);
// console.log(spacer);
// XML2JS - TESTING
parser.parseString(xmlscrubbed, function (err, result) {
var cssx = result['return']['css'];
callback(err, cssx);
// console.log(cssx);
// console.log(spacer);
});
});
});
// SOAP - SEND AXL CALL - CSS
soapRequest.write(soapBody);
soapRequest.end();
},
function (callback) {
// SOAP - SEND AXL CALL - PARTITIONS
var soapRequest2 = https.request(options, soapResponse2 => {
soapResponse2.setEncoding('utf8');
soapResponse2.on('data', chunk => {
soapreplyp += chunk
});
// HTTP.REQUEST - RESULTS + RENDER
soapResponse2.on('end', () => {
console.log(soapreplyp);
// EDIT - SCRUB XML OUTPUT
var rmline1p = soapreplyp.replace(/<\?xml\sversion='1\.0'\sencoding='utf-8'\?>/g, '');
var rmline2p = rmline1.replace(/<soapenv:Envelope\sxmlns:soapenv="http:\/\/schemas.xmlsoap.org\/soap\/envelope\/">/g, '');
var rmline3p = rmline2.replace(/<soapenv:Body>/g, '');
var rmline4p = rmline3.replace(/<ns:listRoutePartition\sxmlns:ns="http:\/\/www\.cisco\.com\/AXL\/API\/[0-9]*\.[0-9]">/g, '');
var rmbottomup1p = rmline4.replace(/<\/soapenv:Envelope>/g, '');
var rmbottomup2p = rmbottomup1.replace(/<\/soapenv:Body>/g, '');
var xmlscrubbedp = rmbottomup2.replace(/<\/ns:listRoutePartition>/g, '');
console.log(xmlscrubbedp);
console.log(spacer);
// XML2JS - TESTING
parser.parseString(xmlscrubbedp, function (err, result) {
var partitionsx = result['return']['css'];
callback(err, partitionsx);
// console.log(partitionsx);
// console.log(spacer);
});
});
});
// SOAP - SEND AXL CALL - PARTITIONS
soapRequest2.write(soapBody2);
soapRequest2.end();
},
function (err, results) {
console.log(cssx);
console.log(partitionsx);
}
]);
-----更新1 -----
好的，我已经更新了我的代码;而且我想我已经拥有了！谢谢你们两位帮我解决这个问题！好吧，所以这不是你推荐的@Chris Phillips。我希望能够单独显示结果，而不是全部组合。我查找了将Promises链接在一起并发现了这篇文章：How to chain and share prior results with Promises。那提到了如何“嵌套，所以可以访问所有以前的结果”。这对我有用。
此外，一旦我把头脑包裹在请求 - 承诺框架中，这非常简单，看起来比常规的http.request框架好很多。
这是新代码！
// MODULES - INCLUDES
var xml2js = require('xml2js');
var parser = new xml2js.Parser();
var rp = require('request-promise');
// FORM - DATA COLLECTION
var cucmpub = 'xxxx';
var cucmversion = 'xxxx';
var username = 'xxxx';
var password = 'xxxx';
// JS - VARIABLE DEFINITION - GLOBAL
var authentication = username + ":" + password;
var cssx = null;
var partitionsx = null;
var spacer = '-----';
// CSS - JS - VARIABLE DEFINITION
var cssrmline1 = '';
var cssrmline2 = '';
var cssrmline3 = '';
var cssrmline4 = '';
var cssrmbottomup1 = '';
var cssrmbottomup2 = '';
// CSS - SOAP - AXL REQUEST
var cssaxlrequest = 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>');
// CSS - HTTP - REQUEST BUILD
var csshttprequest = {
method: 'POST',
uri: 'https://' + cucmpub + ':8443/axl/',
rejectUnauthorized: false,
headers: {
'SoapAction': 'CUCM:DB ver=' + cucmversion + ' listCss',
'Authorization': 'Basic ' + new Buffer(authentication).toString('base64'),
'Content-Type': 'text/xml; charset=utf-8',
},
body: cssaxlrequest,
};
// PARTITIONS - JS - VARIABLE DEFINITION
var partitionsrmline1 = '';
var partitionsrmline2 = '';
var partitionsrmline3 = '';
var partitionsrmline4 = '';
var partitionsrmbottomup1 = '';
// PARTITIONS - SOAP - AXL REQUEST
var partitionsaxlrequest = 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:listRoutePartition sequence="?">' +
'<searchCriteria>' +
'<name>%</name>' +
'</searchCriteria>' +
'<returnedTags uuid="?">' +
'<name>?</name>' +
'</returnedTags>' +
'</ns:listRoutePartition>' +
'</soapenv:Body>' +
'</soapenv:Envelope>');
// PARTITIONS - HTTP - REQUEST BUILD
var partitionshttprequest = {
method: 'POST',
uri: 'https://' + cucmpub + ':8443/axl/',
rejectUnauthorized: false,
headers: {
'SoapAction': 'CUCM:DB ver=' + cucmversion + ' listRoutePartition',
'Authorization': 'Basic ' + new Buffer(authentication).toString('base64'),
'Content-Type': 'text/xml; charset=utf-8',
},
body: partitionsaxlrequest,
};
// CHAINED REQUESTS + OUTPUT
rp(csshttprequest)
.then(function (resultcss) {
var cssrmline1 = resultcss.replace(/<\?xml\sversion='1\.0'\sencoding='utf-8'\?>/g, '');
var cssrmline2 = cssrmline1.replace(/<soapenv:Envelope\sxmlns:soapenv="http:\/\/schemas.xmlsoap.org\/soap\/envelope\/">/g, '');
var cssrmline3 = cssrmline2.replace(/<soapenv:Body>/g, '');
var cssrmline4 = cssrmline3.replace(/<ns:listCssResponse\sxmlns:ns="http:\/\/www\.cisco\.com\/AXL\/API\/[0-9]*\.[0-9]">/g, '');
var cssrmbottomup1 = cssrmline4.replace(/<\/soapenv:Envelope>/g, '');
var cssrmbottomup2 = cssrmbottomup1.replace(/<\/soapenv:Body>/g, '');
var cssxmlscrubbed = cssrmbottomup2.replace(/<\/ns:listCssResponse>/g, '');
parser.parseString(cssxmlscrubbed, function (err, result) {
var cssx = result['return']['css'];
// console.log(cssx);
// console.log(spacer);
return rp(partitionshttprequest)
.then(function (resultpartitions) {
var partitionsrmline1 = resultpartitions.replace(/<\?xml\sversion='1\.0'\sencoding='utf-8'\?>/g, '');
var partitionsrmline2 = partitionsrmline1.replace(/<soapenv:Envelope\sxmlns:soapenv="http:\/\/schemas.xmlsoap.org\/soap\/envelope\/">/g, '');
var partitionsrmline3 = partitionsrmline2.replace(/<soapenv:Body>/g, '');
var partitionsrmline4 = partitionsrmline3.replace(/<ns:listRoutePartitionResponse\sxmlns:ns="http:\/\/www\.cisco\.com\/AXL\/API\/[0-9]*\.[0-9]">/g, '');
var partitionsrmbottomup1 = partitionsrmline4.replace(/<\/soapenv:Envelope>/g, '');
var partitionsrmbottomup2 = partitionsrmbottomup1.replace(/<\/soapenv:Body>/g, '');
var partitionsxmlscrubbed = partitionsrmbottomup2.replace(/<\/ns:listRoutePartitionResponse>/g, '');
parser.parseString(partitionsxmlscrubbed, function (err, result) {
var partitionsx = result['return']['routePartition'];
console.log(cssx);
console.log(spacer);
console.log(partitionsx);
});
})
});
})
答案 0 :(得分：3)
那么你可以使用request-promise库来进行http调用，这样就会有点像（有点粗糙，错误处理省略）
const request = require("request-promise");
const options1 = {
//.. set URL, headers etc
};
request(options1).then ( body => {
// do processing for request 1
return [results1];
}).then( results => {
return request(options2).then ( body => {
//do processing for request 2
results.push(results2);
return results;
});
})
.then((results) => {
});
如果您使用的是Node 8.x或更高版本，则可以使用async / await来执行类似
的操作let resp1 = await request(options1);
//process resp1
let resp2 = await request(options2);
// process resp2
let results = [resp1, resp2];
我建议将您的所有请求代码转换为函数，以便您可以更轻松地重复使用它。