用于从XML标记中删除无效空格的Java 8函数

import java.util.function.Function;
import java.util.regex.Pattern;

public class XMLUtils {
    private static final Pattern PATTERN = Pattern.compile(">\\s+<");

    public static String removeInvalidSpaces(String xml) {
        return PATTERN.matcher(xml).replaceAll("><");
    }

    public static void main(String[] args) {
        String xml = "<root>\n" +
                "    <element1>value1</element1>\n" +
                "    <element2>value2</element2>\n" +
                "</root>";

        String cleanedXml = removeInvalidSpaces(xml);
        System.out.println(cleanedXml);
    }
}