My android aar's gradle dependencies shows the artifact which excluded in maven pom.xml

my pom is:

<dependency>
            <groupId>com.taobao.android</groupId>
            <artifactId>login4android_session</artifactId>
            <version>3.0.5.3</version>
            <type>jar</type>
            <exclusions>
                <exclusion>
                    <groupId>com.alibaba</groupId>
                    <artifactId>fastjson</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

my gradle dependencies is: gradle -q tmallandroid:dependencies --configuration compile

±-- com.taobao.android:login4android_session:3.0.5.3

|

— com.alibaba:fastjson:1.1.45