红帽全球峰会第 21 章 拦截器
JBoss EAP 消息传递支持拦截器来拦截进入和退出服务器的数据包。对于分别进入或退出服务器的每个数据包，会调用传入和传出拦截器。这允许执行自定义代码，如用于审核或过滤数据包。拦截器可以修改它们拦截的数据包。这使得拦截器功能强大，但也具有危险性。
21.1. 实施 Interceptors
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拦截器必须实现拦截器接口：
返回的布尔值很重要：
- 如果返回 true，进程通常会继续
- 如果返回 false，则进程将被中止，不会调用其他拦截器，服务器也不会进一步处理数据包。
拦截器类应作为模块添加到 JBoss EAP 中。如需更多信息，请参阅 JBoss EAP 配置指南中的 https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.3/html-single/configuration_guide/#create_a_custom_module 创建自定义模块。
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