如何使用Node.js解码SAML响应并解析解码后的响应(即XML )中的数据？

npm install xml2js xml-crypto

const fs = require('fs');
const xml2js = require('xml2js');
const { SignedXml } = require('xml-crypto');

const samlResponse = fs.readFileSync('saml_response.xml', 'utf8');

let parsedResponse;
const parser = new xml2js.Parser();
parser.parseString(samlResponse, (err, result) => {
  if (err) throw err;
  parsedResponse = result;
});

const assertion = parsedResponse['samlp:Response']['saml:Assertion'][0];
const issuer = assertion['saml:Issuer'][0];
const subject = assertion['saml:Subject'][0]['saml:NameID'][0]['_'];
// 其他数据字段的访问方式类似，根据实际需要进行解析

const signature = parsedResponse['samlp:Response']['Signature'][0];
const sig = new SignedXml();
sig.keyInfoProvider = {
  getKeyInfo: () => '<X509Data></X509Data>',
  getKey: () => fs.readFileSync('public.pem', 'utf8'),
};
sig.loadSignature(signature);
const isValidSignature = sig.checkSignature(samlResponse);