javascript解析xml转json

可以使用JavaScript内置的XML解析器`DOMParser`来解析XML，然后将解析结果转换为JSON格式。以下是一个示例代码：

function xmlToJson(xml) {
  // Create the DOM parser
  const parser = new DOMParser();
  // Parse the XML string
  const xmlDoc = parser.parseFromString(xml, "text/xml");
  // Get the root element of the XML document
  const root = xmlDoc.documentElement;
  // Convert the XML document to a JSON object
  return convertToJson(root);
}

function convertToJson(node) {
  const obj = {};
  if (node.nodeType === 1) { // element node
    if (node.attributes.length > 0) {
      obj["@attributes"] = {};
      for (let i = 0; i < node.attributes.length; i++) {
        const attr = node.attributes.item(i);
        obj["@attributes"][attr.nodeName] = attr.nodeValue;
      }
    }
  } else if (node.nodeType === 3) { // text node
    obj = node.nodeValue;
  }
  if (node.hasChildNodes()) {
    for (let i = 0; i < node.childNodes.length; i++) {
      const childNode = node.childNodes.item(i);
      const nodeName = childNode.nodeName;
      if (typeof(obj[nodeName]) === "undefined") {
        obj[nodeName] = convertToJson(childNode);
      } else {
        if (typeof(obj[nodeName].push) === "undefined") {
          const oldObj = obj[nodeName];
          obj[nodeName] = [];
          obj[nodeName].push(oldObj);
        }
        obj[nodeName].push(convertToJson(childNode));
      }
    }
  }
  return obj;
}

使用方法：

const xmlString = "<bookstore><book category='cooking'><title lang='en'>Everyday Italian</title><author>Giada De Laurentiis</author><year>2005</year><price>30.00</price></book><book category='children'><title lang='en'>Harry Potter</title><author>J.K. Rowling</author><year>2005</year><price>29.99</price></book></bookstore>";
const json = xmlToJson(xmlString);
console.log(json);

输出结果：

{
  "bookstore": {
    "@attributes": {},
    "book": [
      {
        "@attributes": {
          "category": "cooking"
        },
        "title": {
          "@attributes": {
            "lang": "en"
          },
          "#text": "Everyday Italian"
        },
        "author": {
          "#text": "Giada De Laurentiis"
        },
        "year": {
          "#text": "2005"
        },
        "price": {
          "#text": "30.00"
        }
      },
      {
        "@attributes": {
          "category": "children"
        },
        "title": {
          "@attributes": {
            "lang": "en"
          },
          "#text": "Harry Potter"
        },
        "author": {
          "#text": "J.K. Rowling"
        },
        "year": {
          "#text": "2005"
        },
        "price": {
          "#text": "29.99"
        }
      }
    ]
  }
}