2017-07-28 72 views
1

我在工作的阵营原生应用和简单试图执行这段代码XMLParser中给错误'无法设置的未定义的属性值'

fetch('https://ad13.adfarm1.adition.com/banner?sid=3915124&wpt=X.xml') 
.then((response) => response.text()) 
.then((responseJson) => { 
    console.log("WorkingTillHere",responseJson) 
    xml_Img = new XMLParser().parseFromString(responseJson); // Assume xmlText contains the example XML 
    console.log("ParserVideo,",xml_Img); 
}) .catch((error) => { 
    console.log("ParserEx",error); 
}); 

我可以在控制台窗口中看到

WorkingTillHere

但它不执行XMLParser().parseFromString(responseJson);和我越来越控制台日志

ParserEx TypeError: Cannot set property 'value' of undefined

相同的代码工作p erfectly好吗这个URL链接fetch('http://teststream.airtango.de/theo/vast.xml')

+0

我想你应该调用异步从http请求中获取数据, 尝试添加“等待获取”并在你的函数前添加异步 –

+0

@GaneshCauda - 为什么?在适当的时候调用'.then'链 –

+0

我可以在原始XML中看到的唯一区别是它在**的作用**'<![CDATA ['和']]>'在它们自己的行上 - 而在失败的数据中,您在一行中有'<![CDATA [...等等等等]]>' - 什么是XMLParser?它是[这一个](https://www.npmjs.com/package/react-xml-parser)? –

回答

1

反应的XML解析器并不了解

<?xml version="1.0" encoding="UTF-8"?> 

头。所以,总体而言,你可以

fetch('https://ad13.adfarm1.adition.com/banner?sid=3915124&wpt=X.xml') 
.then((response) => response.text()) 
.then((xmlText) => { 
    // remove <?xml ... etc header because react-xml-parser chokes on it 
    if (xmlText.toLowerCase().substr(0,5) == '<?xml') { 
     xmlText = xmlText.split(/\?>\r{0,1}\n{0,1}/).slice(1).join('?>\n'); 
    } 
    console.log("WorkingTillHere",xmlText) 
    xml_Img = new XMLParser().parseFromString(xmlText); // Assume xmlText contains the example XML 
    console.log("ParserVideo,",xml_Img); 
}) .catch((error) => { 
    console.log("ParserEx",error); 
}); 

The above would only catch it if the very first 5 characters are <?xml ... that may be a little naive on my part. However, I believe the authors of react-xml-parser should handle <?xml ... ?> in their code :p

Looking at the source to xmlParser, it seems they DO try to handle it, but obviously fail

注意,改变xmlParse.js的8号线从

if (tags[i].indexOf('?xml')) { 

if (tags[i].indexOf('?xml') < 0 && tags[i].length > 0) { 

解决了这个问题太:对

+0

不幸的是,它没有工作.... [你的代码](https://ibb.co/mUoRaQ)和[输出在这里](https://ibb.co/cxWevQ) –

+0

尝试更改'xmlParse .js'而不是...那个xmlParser扼杀空行! –

+0

其实,试试我刚刚更新的代码的轻微变化 –

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