How to generate classes from wsdl using Maven and wsimport?

Try to wrap wsdlLocation in wsdlUrls

            <wsdlUrls>
                <wsdlLocation>http://url</wsdlLocation>
            </wsdlUrls>

Even though this is bit late response, may be helpful for someone. Look like you have used pluginManagement. If you use pluginManagement , it will not pick the plug-in execution.

It should be under

<build>
<plugins>           
        <plugin> 

Here is an example of how to generate classes from wsdl with jaxws maven plugin from a url or from a file location (from wsdl file location is commented).

<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">
<build>  
    <plugins>           
        <!-- usage of jax-ws maven plugin-->
        <plugin> 
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>jaxws-maven-plugin</artifactId>
            <version>1.12</version>
            <executions> 
                <execution> 
                    <id>wsimport-from-jdk</id>
                    <goals>
                        <goal>wsimport</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <!-- using wsdl from an url -->
                <wsdlUrls>
                    <wsdlUrl>
                        http://myWSDLurl?wsdl
                    </wsdlUrl>
                </wsdlUrls>
                <!-- or using wsdls file directory -->
                    <!-- <wsdlDirectory>src/wsdl</wsdlDirectory> -->
                <!-- which wsdl file -->
                <!-- <wsdlFiles> -->
                    <!-- <wsdlFile>myWSDL.wsdl</wsdlFile> -->
                <!--</wsdlFiles> -->
                <!-- Keep generated files -->
                <keep>true</keep> 
                <!-- Package name --> 
                <packageName>com.organization.name</packageName> 
                <!-- generated source files destination-->
                <sourceDestDir>target/generatedclasses</sourceDestDir>
            </configuration>
        </plugin>
    </plugins>  
</build>  

To generate classes from WSDL, all you need is build-helper-maven-plugin and jaxws-maven-plugin in your pom.xml
Make sure you have placed wsdl under folder src/main/resources/wsdl and corresponding schema in src/main/resources/schema, run command "mvn generate-sources" from Project root directory.

C:/Project root directory > mvn generate-sources

generated java classes can be located under folder

target/generated/src/main/java/com/raps/code/generate/ws.

pom.xml snippet

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <version>1.9</version>
    <executions>
        <execution>
            <id>add-source</id>
            <phase>generate-sources</phase>
            <goals><goal>add-source</goal></goals>
            <configuration>
                <sources>
                    <source>${project.build.directory}/generated/src/main/java</source>
                </sources>
            </configuration>
        </execution>
    </executions>
</plugin>

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>jaxws-maven-plugin</artifactId>
    <version>1.12</version>
    <configuration>
        <wsdlDirectory>${project.basedir}/src/main/resources/wsdl</wsdlDirectory>
        <packageName>com.raps.code.generate.ws</packageName>
        <keep>true</keep>
        <sourceDestDir>${project.build.directory}/generated/src/main/java</sourceDestDir>
    </configuration>
    <executions>
        <execution> 
            <id>myImport</id>
            <goals><goal>wsimport</goal></goals>
        </execution>
    </executions>
</plugin>