Add configuration similar to the following to your POM:
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>axistools-maven-plugin</artifactId>
<version>1.5-SNAPSHOT</version>
<configuration>
<urls>
<url>http://host/server/sample.wsdl</url>
<url>http://host/server/sample2.wsdl</url>
</urls>
<packageSpace>com.company.wsdl</packageSpace>
<testCases>true</testCases>
<serverSide>true</serverSide>
<subPackageByFileName>true</subPackageByFileName>
</configuration>
<executions>
<execution>
<goals>
<goal>wsdl2java</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
...
</build>
...
</project>