我试图使用ActiveMQ作为JMS提供程序发送包含myObject，myClass实例的ObjectMessage。
接收应用程序中发生错误，说：
Failed to build body from content. Serializable class not available
to broker. Reason: java.lang.ClassNotFoundException: Forbidden class
client.MyClass! This class is not trusted to be serialized as
ObjectMessage payload. Please take a look at http://activemq.apache.org
/objectmessage.html for more information on how to configure trusted
classes.
我阅读了该页面并说：
If you need to exchange object messages, you need to add packages your
applications are using. You can do that with by using
org.apache.activemq.SERIALIZABLE_PACKAGES system property of the
broker. You can add this system property to ACTIVEMQ_OPTS variable in
${ACTIVEMQ_HOME}/bin/env script.
我正在使用ActiveMQ从我解压缩rar的目录启动它，并使用命令提示符启动它。在\ bin子文件夹中，没有env脚本，只有activemq脚本。
env脚本在哪里？