Generating Javadoc in Maven does give errors because of proxy

Question

I'm trying to generate my javadoc using Maven to use in SpringFox Swagger.

When I generate the Javadoc using Maven I got an error like:

Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.0:javadoc (default) on project Spring-server: An error has occurred in Javadoc report generation:
Exit code: 1 - javadoc: error - Illegal package name: "!"
 Command line was: "C:\Program Files\Java\jdk1.8.0_162\jre\..\bin\javadoc.exe" -J-Dhttp.proxySet=true -J-Dhttp.proxyHost=10.5.5.5 -J-Dhttp.proxyPort=8080 "-J-Dhttp.nonProxyHosts=\"tst*\"" "-J-Dhttp.proxyUser=\"user\"" "-J-Dhttp.proxyPassword=\"pw with space !\"" @options @packages

How can I disable the proxy for generating Javadoc? I need the proxy to download all the dependencies but for generating the Javadoc itself it should not use any Proxy. So is it possible to disable the proxy for the javadoc maven Plugin?

My Maven javadoc settings looks like:

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <show>private</show>
                    <nohelp>true</nohelp>
                </configuration>

                <executions>
                    <execution>
                        <goals>
                            <goal>javadoc</goal>
                        </goals>
                        <phase>process-classes</phase>
                        <configuration>
                            <doclet>springfox.javadoc.doclet.SwaggerPropertiesDoclet</doclet>
                            <docletArtifact>
                                <groupId>io.springfox</groupId>
                                <artifactId>springfox-javadoc</artifactId>
                                <version>0.9.3</version>
                            </docletArtifact>
                            <additionalparam>
                                -classdir ${project.build.outputDirectory}
                            </additionalparam>
                            <sourcepath>${project.build.sourceDirectory}</sourcepath>
                            <subpackages>com.atlascopco.ilm2</subpackages>
                            <useStandardDocletOptions>false</useStandardDocletOptions>
                        </configuration>
                    </execution>
                </executions>
            </plugin>