在 Node.js 中解析 XML 字符串的最简单方法是什么？
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What's the simplest way to parse an XML string in Node.js?
提问by Yevgeny Simkin
I'm looking around and not seeing an obvious way to parse XML in Node. I'm assuming that there's some relatively straight forward XML object that I can pass a String or url to, but I'm not finding anything like that in the spec. Do I need an external lib? and if so, which one would you guys recommend? I don't need xPath (though I wouldn't mind it) as long as I can walk the tree in an obvious way (test if nodeType == ElementNode and loop through children).
我环顾四周，没有看到在 Node.js 中解析 XML 的明显方法。我假设有一些相对直接的 XML 对象，我可以将字符串或 url 传递给它，但我在规范中没有找到类似的东西。我需要外部库吗？如果是这样，你们会推荐哪一个？我不需要 xPath（尽管我不介意），只要我能以明显的方式遍历树（测试 nodeType == ElementNode 并循环遍历子项）。
采纳答案by Jorge Israel Pe?a
回答by user568109
I suggest xml2js, a simple XML to JavaScript object converter. You can then iterate the resulting object. Code snippet from the page :
我建议xml2js，一个简单的 XML 到 JavaScript 对象转换器。然后，您可以迭代生成的对象。页面中的代码片段：
var parseString = require('xml2js').parseString;
var xml = "<root>Hello xml2js!</root>"
parseString(xml, function (err, result) {
console.dir(result);
});
You can install it by using npm install xml2js
您可以使用安装它 npm install xml2js
回答by istos
If it isn't an absolute requirement that it has to be done server side, then on the client you could use XMLSerializerto parse into string, and DOMParserto parse into DOM.
如果它不是必须在服务器端完成的绝对要求，那么在客户端您可以使用XMLSerializer解析为字符串，并使用DOMParser解析为 DOM。
XMLSerializer Example (from DOM to string):
XMLSerializer 示例（从 DOM 到字符串）：
var XMLS = new XMLSerializer();
var elem = document;
var xml_str = XMLS.serializeToString(elem);
console.log(xml_str);
DOMParser Example (from string to DOM):
DOMParser 示例（从字符串到 DOM）：
var parser = new DOMParser();
var doc = parser.parseFromString(xml_str, "application/xml");
console.log(doc);
回答by Ilyas Assainov
If you're using Express along with body parser, the simplest way would be to use express-xml-bodyparser. It allows to parse XML for all routes or specific ones, depending on your scenario
如果您将 Express 与正文解析器一起使用，最简单的方法是使用express-xml-bodyparser。它允许为所有路由或特定路由解析 XML，具体取决于您的场景
All routes:
所有路线：
const xmlparser = require('express-xml-bodyparser');
// .. other middleware ...
app.use(express.json());
app.use(express.urlencoded());
app.use(xmlparser());
// ... other middleware ...
app.post('/receive-xml', function(req, res, next) {
// req.body contains parsed XML as JSON
});
Specific routes:
具体路线：
app.post('/receive-xml', xmlparser({trim: false, explicitArray: false}), function(req, res, next) {
// req.body contains parsed XML as JSON
});
