如何在React js中读取xml文件(data.xml)？

我尝试读取 xml 文件并解析它react-xml-parser图书馆。

 var XMLParser = require('react-xml-parser');
 var xml = new XMLParser().parseFromString(xml_string);
 console.log(xml);
 console.log(xml.getElementsByTagName('Row'));

在这里，它应该从字符串读取，但我需要从文件中获取它。 我的 xml 文件位于目录：xmldata/list.xml，所以我现在不知道该怎么做。

尝试了这个代码：

import XMLData from '../../xmldata/list.xml';
function ReadData() {
          var jsonDataFromXml = new XMLParser().parseFromString(XMLData);
          console.log(jsonDataFromXml);
          console.log(jsonDataFromXml.getElementsByTagName('Row'));

        }
    }
}

结构文件夹

-src
   |—views
        |—AdminScreen
               |—AdminScreen.js <-here used list.xml
   |—xmldata
           |—list.xml 

但结果是：

bundle.js:81 Uncaught TypeError: Cannot set property 'value' of undefined
    at bundle.js:81
    at Array.map (<anonymous>)
    at e.value (bundle.js:76)
    at e.value (bundle.js:148)
    at ReadData (AdminScreen.js:36)
    at AdminScreen (AdminScreen.js:14)
    at renderWithHooks (react-dom.development.js:15821)
    at mountIndeterminateComponent (react-dom.development.js:18141)
    at beginWork$1 (react-dom.development.js:19357)
    at HTMLUnknownElement.callCallback (react-dom.development.js:363)
    at Object.invokeGuardedCallbackDev (react-dom.development.js:412)
    at invokeGuardedCallback (react-dom.development.js:466)
    at beginWork$$1 (react-dom.development.js:24570)
    at performUnitOfWork (react-dom.development.js:23505)
    at workLoopSync (react-dom.development.js:23480)
    at renderRoot (react-dom.development.js:23155)
    at scheduleUpdateOnFiber (react-dom.development.js:22653)
    at scheduleRootUpdate (react-dom.development.js:25686)
    at updateContainerAtExpirationTime (react-dom.development.js:25712)
    at updateContainer (react-dom.development.js:25812)
    at react-dom.development.js:26370
    at unbatchedUpdates (react-dom.development.js:22952)
    at legacyRenderSubtreeIntoContainer (react-dom.development.js:26369)
    at Object.render (react-dom.development.js:26460)
    at Module../src/index.js (index.js:30)
    at __webpack_require__ (bootstrap:785)
    at fn (bootstrap:150)
    at Object.0 (index.js:2)
    at __webpack_require__ (bootstrap:785)
    at checkDeferredModules (bootstrap:45)
    at Array.webpackJsonpCallback [as push] (bootstrap:32)
    at main.chunk.js:1

要读取本地文件，您有两种选择：使用 XMLHttpRequest 或 axios。 使用 XMLHttpRequest：

import XMLData from '../../xmldata/list.xml';

var rawFile = new XMLHttpRequest();
rawFile.open("GET", XMLData, false);
rawFile.onreadystatechange = () => {
    if (rawFile.readyState === 4) {
        if (rawFile.status === 200 || rawFile.status == 0) {
            var xmlasstring = rawFile.responseText;
            console.log('Your xml file as string', xmlasstring)
        }
    }

我建议使用 axios bcz，在使用 Reactjs 时它是更方便、更好的选择 使用 axios：

import XMLData from '../../xmldata/list.xml';

axios.get(XMLData, {
   "Content-Type": "application/xml; charset=utf-8"
})
.then((response) => {
   console.log('Your xml file as string', response.data);
});

现在，在获取 xml 后，您可以根据需要使用 npm 包（例如 React-xml-parser、xml2js）来创建对象或 json。我建议使用 xml2js，它很好。我相信现在您还可以发送“POST”请求来更新您的 xml（如果您愿意）。