NodeJ中的SOAP请求返回500内部服务器错误

编程问答 2022-12-06

问题描述

此刻我正在做一个小项目，我必须向SAP PCo管理主机服务发出SOAP请求。

我研究了概念验证，并创建了一个客户端javascript文档，该文档工作得很好。因此，我尝试在服务器端的NodeJs中实现此脚本。因此，我用node-express创建了一个Web服务器，并用node-request发出了请求，但是如果我将请求发送给PCo Management Host Services，答案就是 500 Internal Server Error 。

>

出于测试目的，PCo管理主机显示原始的http请求，如下所示：

POST LINKTOHOST HTTP/1.1
User-Agent: PCo
SOAPAction: urn:sap.com:pco.management/PCoManagementService/GetAgentInstancesRuntimeInfo
Authorization: Basic ********
Content-Type: text/xml
Host: HOST
Content-Length: 300
Expect: 100-continue
Accept-Encoding: gzip,deflate

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:urns="urn:sap.com:pco.management"><soap:Body><urns:GetAgentInstancesRuntimeInfo xsi:nil="true" /></soap:Body></soap:Envelope>

我接受了这个原始请求，并创建了自己的请求。这是我对概念的有效JavaScript证明：

var userName = prompt("Please Log in with your Windows User Account. Username:","");
var userPW  = prompt("Passwort: ","");

reqAllAgentRuntimeInfo();
setInterval(function() {reqAllAgentRuntimeInfo()},5000);

 /*
 *
 *  Functions
 * 
 */ 

//Sends out the SOAP request via XMLHttpRequest
function reqAllAgentRuntimeInfo()
{
    var xmlhttp = new XMLHttpRequest();
    xmlhttp.open('POST','LINKTOHOST',true,userName,userPW);

    var soapRequest =
    '<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:urns="urn:sap.com:pco.management">' +
        '<soap:Body>' +
            '<urns:GetAgentInstancesRuntimeInfo xsi:nil="true" />' +
        '</soap:Body>'+
    '</soap:Envelope>';

    xmlhttp.setRequestHeader('SOAPAction','urn:sap.com:pco.management/PCoManagementService/GetAgentInstancesRuntimeInfo');
    xmlhttp.setRequestHeader('Authorization','Basic');
    xmlhttp.setRequestHeader('Content-Type','text/xml');
    
    xmlhttp.send(soapRequest);

    xmlhttp.onreadystatechange = function()
    {
        //Test for Status Code 4 & 200 = OK
        if(xmlhttp.readyState == 4 && xmlhttp.status == 200)
        {
            displayData(xmlhttp);
        }
    };
}

然后我创建了此服务器端NodeJs脚本，该脚本不起作用，我无法解释自己的原因。

const http = require('http'); // 1 - Import Node.js  modules
const express = require('express');
const app = express();
const bodyParser = require('body-parser');
const port = 50001;

app.use(bodyParser.urlencoded({ extended: true}));

app.get('/',(req,res) => 
{
    res.redirect('/logIn');
});

app.get('/logIn',res) => 
{
    res.sendFile(__dirname + '/sites/logIn.html');
});

app.post('/logIn',res) =>
{
    //Encode User Credentials
    var base64url = require('base64url');
    var credentials = 'Basic ' + base64url(req.body.userName + ':' + req.body.password);
    
    var request = require('request');
    let soapReq = 
    '<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:urns="urn:sap.com:pco.management">' +
        '<soap:Body>' +
            '<urns:GetAgentInstancesRuntimeInfo xsi:nil="true" />' +
        '</soap:Body>'+
    '</soap:Envelope>';

    var options = 
    {
        url: 'LINKTOHOST',method: 'POST',body: soapReq,headers:
        {
            'Host': 'HOST','Content-Length':soapReq.length,'Accept-Encoding': 'gzip,deflate','User-Agent': 'PCo','SOAPAction': "urn:sap.com:pco.management/PCoManagementService/GetAgentInstancesRuntimeInfo",'Authorization': credentials,'Content-Type': "text/xml"
        }
    };
    
    let callback = (error,response,body) => 
    {
        if(!error && response.statusCode == 200){
            console.log('PCo Communication raw result',body);
        }
        else
        {
            console.log('PCo Communication Error: ',response.statusCode,response.statusMessage);
        }
    }
    console.log(options);
    request(options,callback);
})

app.listen(port,() =>
{
    console.log(`Webserver listening at http://localhost:${port}`);
});

如果有人能帮助我，我会很高兴。

谢谢。

解决方法

您的请求（{options}）已过日期

您用于request（）的{options}不再有效。较新版本的request（）可为您处理许多繁重的工作。请参阅下面概述的更改。

// REMOVE Immediate line break after =
let soapReq = '<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:urns="urn:sap.com:pco.management">' +
        '<soap:Body>' +
            '<urns:GetAgentInstancesRuntimeInfo xsi:nil="true" />' +
        '</soap:Body>'+
    '</soap:Envelope>';

在NODE中，变量分配不能以换行符开头。

// This will cause problems.
let x = 
''+'y';


// Do it like this is OK.
let x = ''+
'y';

var options = 
    {
        hostname: 'LINKTOHOST',// KEY NAME CHANGE: url -> hostname
        auth: 'user:password',//  Moved (No base64URLEncode())
        method: 'POST',body: soapReq,headers:
        {
            // 'Host': 'HOST',---> REMOVE
            // 'Authorization': credentials,---> Moved To Above             
            'Content-Length':soapReq.length,// May not be needed
            'Accept-Encoding': 'gzip,deflate',// May not be need
            'User-Agent': 'PCo','SOAPAction': "urn:sap.com:pco.management/PCoManagementService/GetAgentInstancesRuntimeInfo",'Content-Type': "text/xml"
        } 
    };

request(options,function (response) {
                console.log('STATUS: ' + response.statusCode);
                console.log('HEADERS: ' + JSON.stringify(response.headers));
                response.on('data',function (chunk) {
                    console.log('BODY: ' + chunk);
                });
            });

*******
SEE The Commented Lines for edits.
*******

See a modern example

,

特别感谢factorypolaris。现在可以使用了。这是我的代码：

let soapReq = '<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:urns="urn:sap.com:pco.management">' +
        '<soap:Body>' +
            '<urns:GetAgentInstancesRuntimeInfo xsi:nil="true" />' +
        '</soap:Body>'+
    '</soap:Envelope>';

    var options = 
    {
        host: '127.0.0.1',auth: req.body.userName + ':' + req.body.password,method: 'POST',port: 55555,path: '/PCoManagement',//body: soapReq,-->*Remove this*
        headers:
        {
            'SOAPAction': "urn:sap.com:pco.management/PCoManagementService/GetAgentInstancesRuntimeInfo",'Content-Type': "text/xml"
        }
    };
    
    var req = http.request(options,function (response) {
        console.log('STATUS: ' + response.statusCode);
        console.log('HEADERS: ' + JSON.stringify(response.headers));
        response.on('data',function (chunk) {
            console.log('BODY: ' + chunk);
        });
    });
    
    req.write(soapReq); //--> Add this to write your actual data to the message

    req.end();  //--> Add end() to define the end of your request
javascriptnode-requestsoapsoapsoap