Parse XML-based Spring configurations excluding external links

[alisevych]

Description

XML-based configurations may contain external link(s).
Parsing can initiate connections to these links.

Expected behavior

Parse XML-based Spring configurations safely excluding external links.
Then we can use such XML-files and get information about Bean definitions from them.

Environment

IntelliJ IDEA 2022.3 - 2023.1

Potential alternatives

Currently parsing of such XML-based configurations is skipped:

• Use more safe approach to analyze Spring xml configs #2126

While XML-based configurations are supported:

• Support xml Spring configs collecting in user application #2041

[alisevych]

There can be XML-files in resources and other project folders that contain links.
For example, settings.xml example for Maven configuration contains many links.

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

<mirror>
    <url> ... </url>
</mirror>

<repository>
...

pom.xml contains:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

mybatis-config.xml:

<!DOCTYPE configuration        
    PUBLIC "-//ibatis.apache.org//DTD Config 3.0//EN"        
    "http://ibatis.apache.org/dtd/ibatis-3-config.dtd">

[EgorkaKulikov]

Fixed in #2163