如何在node.js中使用MTOM SOAP Web服务? [英] How to consume MTOM SOAP web service in node.js?

问题描述

我需要从node.js中基于soap的Web服务下载或处理文件. 有人可以建议我如何在node.js中处理此问题

I need to download or process a file from a soap based web service in node.js. can someone suggest me on how to handle this in node.js

我尝试使用"node-soap"或"soap" NPM模块.它适用于普通的肥皂网络服务.但是，不适用于二进制流或基于MTOM的SOAP Web服务

I tried with 'node-soap' or 'soap' NPM module. it worked for normal soap web service. But, not for binary steam or MTOM based SOAP web service

推荐答案

我想尝试回答这个问题……有趣的是2年零2个月后，我无法弄清楚如何轻松解决同一问题

I want to try to answer this... It's quite interesting that 2 years and 2 months later I can not figure it out how to easily solve the same problem.

我正在尝试从以下响应中获取附件:

I'm trying to get the attachment from a response like:

...

标题:{'cache-control':'no-cache ="set-cookie"'， 'content-type':'multipart/related; boundary ="---- = _ Part_61_425861994.1525782562904"; type ="application/xop + xml"; start ="; start-info ="text/xml"'，

headers: { 'cache-control': 'no-cache="set-cookie"', 'content-type': 'multipart/related;boundary="----=_Part_61_425861994.1525782562904";type="application/xop+xml";start="";start-info="text/xml"',

...

正文:'------ = _ Part_61_425861994.1525782562904 \ r \ n内容类型: application/xop + xml; charset = utf-8; type ="text/xml" \ r \ nContent-Transfer-Encoding:8bit \ r \ nContent-ID: \ r \ n \ r \ n .... \ r \ n ------ = _ Part_61_425861994.1525782562904 \ r \ n内容类型: application/octet-stream \ r \ nContent-Transfer-Encoding: 二进制\ r \ n内容ID: \ r \ n \ r \n PNG\ r \ n \ u001a \ n \ u0000 \ u0000 \ u0000 \ rIHDR \ u0000 \ u0000 \ u0002，\ u0000 \ u0000 \u0005 \ b \ u0006 \ u0 .... .... binary ....

body: '------=_Part_61_425861994.1525782562904\r\nContent-Type: application/xop+xml; charset=utf-8; type="text/xml"\r\nContent-Transfer-Encoding: 8bit\r\nContent-ID: \r\n\r\n....\r\n------=_Part_61_425861994.1525782562904\r\nContent-Type: application/octet-stream\r\nContent-Transfer-Encoding: binary\r\nContent-ID: \r\n\r\n�PNG\r\n\u001a\n\u0000\u0000\u0000\rIHDR\u0000\u0000\u0002,\u0000\u0000\u0005�\b\u0006\u0........binary....

我尝试了 ws.js ，但没有解决方案.

I tried ws.js but no solution.

我的解决方案:

var request = require("request");
var bsplit = require('buffer-split')

// it will extract "----=_Part_61_425861994.1525782562904" from the response
function getBoundaryFromResponse(response) {
    var contentType = response.headers['content-type']
    if (contentType && contentType.indexOf('boundary=') != -1 ) {
        return contentType.split(';')[1].replace('boundary=','').slice(1, -1)
    }
    return null
}


function splitBufferWithPattern(binaryData, boundary) {
    var b = new Buffer(binaryData),
        delim = new Buffer(boundary),
        result = bsplit(b, delim);
    return result
}


var options = {
    method: 'POST',
    url: 'http://bla.blabal.../file',
    gzip: true,
    headers: {
        SOAPAction: 'downloadFile',
        'Content-Type': 'text/xml;charset=UTF-8'
    },
    body: '<soapenv: ... xml request of the file ... elope>'
};

var data = [];
var buffer = null;
var filename = "test.png"

request(options, function (error, response, body) {
        if (error) throw new Error(error);

        if (filename && buffer) {
            console.log("filename: " + filename)
            console.log(buffer.toString('base64'))
            // after this, we can save the file from base64 ...
        }
    })
    .on('data', function (chunk) {
        data.push(chunk)

    })
    .on('end', function () {
        var onlyPayload = splitBufferWithPattern(Buffer.concat(data), '\r\n\r\n') // this will get from PNG
        buffer = onlyPayload[2]
        buffer = splitBufferWithPattern(buffer, '\r\n-')[0]
        console.log('Downloaded.');

    })

我不确定它在大多数情况下都可以使用.在我看来，它看起来像是不稳定的代码，因此我正在寻找更好的东西.

I am not sure it will works in most of the cases. It looks like unstable code to my eyes and so I'm looking for something better.

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