Question

在共同基金中,如果用户要求终止,就需要采取一些行动。我需要某种拦截器,但我不知道如何这样做。我需要帮助。增编

Answer 1

我建议BalusC s blog:。

本条显示,你如何拦截 JSF Life Mill 和debug the information。这还将使你能够发现你的请求终止了。

If you posted some code here it could also help us find out where the true problem lies. Here is an excerpt of the code that you need to implement to debug the lifecycle:

package mypackage;

import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;

public class LifeCycleListener implements PhaseListener {

    public PhaseId getPhaseId() {
        return PhaseId.ANY_PHASE;
    }

    public void beforePhase(PhaseEvent event) {
        System.out.println("START PHASE " + event.getPhaseId());
    }

    public void afterPhase(PhaseEvent event) {
        System.out.println("END PHASE " + event.getPhaseId());
    }

}

Answer 2

如果希望<代码>FacesContext可查,那么最好的位置是 afterPhase of >PhaseID.RENDER_RESPONSE within a PhaseListener 。例如:

public class MyPhaseListener implements PhaseListener {

    public PhaseId getPhaseId() {
        return PhaseId.RENDER_RESPONSE;
    }

    public void beforePhase(PhaseEvent event) {
        // No operation here.
    }

    public void afterPhase(PhaseEvent event) {
        FacesContext context = event.getFacesContext();
        // Do your thing here with the FacesContext.
    }

}

如果您不需要<代码>FacesContext,那么最好的位置就在chain.doFilter(request, response)内。例如:

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) {
    chain.doFilter(request, response);
    // Do your thing here.
}

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