我正在学习node-js，正在尝试解决以下提到的问题。我试图使用node.js中可用的xml-splitter以及xml-stream npm模块，但是错误发生为Error: Text data outside of root node.
我有如下文件
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Party tonight!</body>
</note>
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Jone</to>
<from>Dove</from>
<heading>Reminder</heading>
<body>One batch, Two batch</body>
</note>
我想将文件分成两个，如图所示
文件1：
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Party tonight!</body>
</note>
文件2：
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Jone</to>
<from>Dove</from>
<heading>Reminder</heading>
<body>One batch, Two batch</body>
</note>
下面是解决问题的完整工作代码。主要思想是使用“ byline” NPM模块逐行读取文件，并检测“新” XML子文件何时启动。
const byline = require("byline");
const fs = require("fs");
const filePath = "./file.xml";
var stream = byline(fs.createReadStream(filePath));
var fileContents = {};
var indexSubFile = 0;
var subFileName;
stream.on("data", function(line) {
line = line.toString(); // Convert the buffer stream to a string line
if (/^<\?xml/.test(line)) {
// New XML sub-file
indexSubFile++;
subFileName = "file" + indexSubFile + ".xml";
fileContents[subFileName] = [line];
} else {
fileContents[subFileName].push(line);
}
});
stream.on("error", function(err) {
console.error(err);
});
stream.on("end", function() {
var key;
for (key in fileContents) {
fs.writeFileSync(key, fileContents[key].join("\n"));
}
console.log("Done");
});