Nearly all components must deal with events, either as an event publisher or as an event handler.

几乎所有组件都必须处理事件，要么作为事件的发布者，要么作为事件的处理者。

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To accomplish this, the subscriber portlet registers its event handler to this topic, and the publisher portlet (Figure 9) publishes a message to this topic.

为了完成该操作，订阅者Portlet对该话题注册了其事件处理器，而发布者 Portlet （图9）就会对该话题发布一条信息。

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To accomplish this, the subscriber portlet registers its event handler to this topic, and the publisher portlet (Figure 9) publishes a message to this topic.

为了完成该操作，订阅者Portlet对该话题注册了其事件处理器，而发布者 Portlet （图9）就会对该话题发布一条信息。

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