nodejs elementtree npm xml 解析合并

Question

我有一个关于我上次 post 在下面 post 编辑的相同模块的问题。看起来，处理 XML 解析是相当困难的。 elementTree 的文档非常丰富。

我有以下 template_XML 文件：

<?xml version="1.0" encoding="UTF-8"?>
<Tailoring xmlns="http://checklists.nist.gov/xccdf/1.2" id="xccdf_org.open-scap_tailoring_example">
<status>incomplete</status>
<version time="2013-01-15T16:00:00.000+02:00">1.0</version>
    <Profile id="PlaceHolder">
    <title>Tailoring for py_test</title>
    <select idref="xccdf_rule_name" selected="true"/>
</Profile>
</Tailoring>

下面是 sample_XML 文件：

<Benchmark xmlns="http://checklists.nist.gov/xccdf/1.1" xmlns:xsi="www.w3.org/2001/XMLSchema-instance" id="SAP-HANA" resolved="1" xml:lang="en-US">
<status date="2016-03-17">draft</status>
<title xmlns:xhtml="http://www.w3.org/1999/xhtml" xml:lang="en-US">Guide to the Secure Configuration of SAP HANA</title>
<version>0.1.28</version>

<Profile id="profile1">
    <title xmlns:xhtml="http://www.w3.org/1999/xhtml" xml:lang="en-US">text1</title>
    <select idref="This is rule 1" selected="true"/>
    <set-value idref="ssfs_master_key_timeout">20</set-value>
</Profile> 

<Profile id="profile2">
    <title xmlns:xhtml="http://www.w3.org/1999/xhtml" xml:lang="en-US">text2</title>
    <select idref="this is rule1" selected="true"/>
    <select idref="this is rule1" selected="true"/>
    <select idref="this is rule1" selected="true"/>
</Profile>
</Benchmark>

我需要创建一个 new_xml 文件，一个 template_XML 文件的副本。但是想用“profile2 替换 new_xml 文件中的“PlaceHolder”个人资料标签" sample_XML 文件的标签。它是一种合并 2 xml 文件并创建一个新文件的方法。下面是我试过的代码：

function call(id){
    var template_XML = 'C:\MyDrive\template_XML';
    var new_xml = 'C:\MyDrive\new_xml';
    data = fs.readFileSync(template_XML).toString();
    data1 = fs.readFileSync(sample_XML).toString();
    etree = et.parse(data);
    etree1 = et.parse(data1);
    var profile = etree.find('./Profile');  // Getting the profile sub-element.
    etree.getroot().remove(profile)         // Removing the sub-element. So that I can insert new profile from sample file

    var profiles = etree1.findall('./Profile'); // Find the required profile.
    for (var i = 0; i < profiles.length; i++) {
        if(profiles[i].get('id') == 'profile2')
            var tmppro = profiles[i];
    }
    console.log(tmppro);
    etree.insert(3,tmppro);     // insert it. Failing

    var write = fs.openSync(new_xml, 'w');
    etree.write(write);                     // write it. Failing
}

出于某种原因，此代码在 "etree.insert" 和 "etree.write"

方面不起作用

Answer 1

我终于可以让它与当前的库一起工作了。请看我的评论：

'use strict';

const et = require('elementtree');
const path = require('path');
const fs = require('fs');

function populateXmlTemplate(id) {
 //Please use path.join to make it cross-platform
 var template_XML = path.join(__dirname, 'template.xml');
 var sample_XML = path.join(__dirname, 'sample.xml');
 var new_xml = path.join(__dirname, 'new.xml');

 var data = fs.readFileSync(template_XML).toString();
 var data1 = fs.readFileSync(sample_XML).toString();

 var etree = et.parse(data);
 var etree1 = et.parse(data1);

 var root = etree.getroot();

 var placeholder = root.find('./Profile');
 root.remove(placeholder);

 var profiles = etree1.findall('./Profile'); // Find the required profile.
 for (var i = 0; i < profiles.length; i++) {
  //If I get it right, it shouldn't be hardcoded
  if (profiles[i].get('id') == id) {
   var tmppro = profiles[i];
  }
 }

 //After you removed the placeholder the number of children decreased
 //So it should be 2, not 3.
 //Also etree doesn't have insert method, please call root.insert
 root.insert(2, tmppro);

 //You have been writing the document a bit incorrectly.
 var resultXml = etree.write();
 fs.writeFileSync(new_xml, resultXml);
}

populateXmlTemplate('profile2');

module.exports = {populateXmlTemplate};

但是你是对的，文档不好。它大多不见了。所以大多数时候我只是 debugging it to see the available methods, also there are some tests 在 lib 仓库中。

还有其他模块可以使用 js。请看这个 answer.

nodejs elementtree npm xml 解析合并

nodejs elementtree npm xml parsing and merging

javascript

xml

parsing

elementtree

node.js