java 版本： 1.6.0_10-rc2
maven 版本： 3.0.4
maven编译插件 ：
<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <compilerArguments>
                        <verbose />
                        <bootclasspath>${JAVA_HOME}/lib/rt.jar</bootclasspath>
                    </compilerArguments>
                    <encoding>utf8</encoding>
                </configuration>
            </plugin>

运行mvn clean compile后build failure，
错误原因：
ECG2ServiceImpl.java:18: package com.sun.org.apache.xml.internal.security.exceptions does not exist
ECG2ServiceImpl.java:19: package com.sun.org.apache.xml.internal.security.utils does not exist
这2个类是属于rt.jar里的，也就是JRE里的，为什么会引用不到呢？

已经尝试过在pom中添加
<compilerArguments>
                        <verbose />
                        <bootclasspath>${JAVA_HOME}/lib/rt.jar</bootclasspath>
   </compilerArguments>

也没有效果，求助！