<dependency>

    <groupId>org.xmlunit</groupId>

    <artifactId>xmlunit-core</artifactId>

    <version>2.3.0</version>

</dependency>

<root>

    <id>123</id>

    <name>liming</name>

</root>

control.xml

<root>

    <id>1234</id>

    <name>liming</name>

</root>

test.xml

import static org.junit.Assert.assertFalse;

import java.io.File;

import javax.xml.transform.Source;

import org.junit.Test;

import org.xmlunit.builder.DiffBuilder;

import org.xmlunit.builder.Input;

import org.xmlunit.diff.Diff;

import org.xmlunit.diff.Difference;

public class Xmltest {

    @Test

    public void ff() {

        File control = new File("E://control.xml");

        File test = new File("E://test.xml");

        Source sourceControl = Input.fromFile(control).build();

        Source sourceTest = Input.fromFile(test).build();

        Diff build = DiffBuilder.compare(sourceControl).withTest(sourceTest).ignoreComments().ignoreWhitespace().build();

        boolean hasDifferences = build.hasDifferences();

        if (hasDifferences) {

            Iterable<Difference> differences = build.getDifferences();

            for (Difference difference : differences) {

                System.out.println(difference);

            }

        }

        assertFalse(hasDifferences);

    }

}

Expected text value '123' but was '1234' - comparing <id ...>123</id> at /root[1]/id[1]/text()[1] to <id ...>1234</id> at /root[1]/id[1]/text()[1] (DIFFERENT)