源码讲解renderResponse和responseComplete的区别

看源代码：

responseComplete：

/**
    * <p>Signal the JavaServer Faces implementation that the HTTP response
    * for this request has already been generated (such as an HTTP redirect),
    * and that the request processing lifecycle should be terminated as soon
    * as the current phase is completed.</p>
    *
    * @throws IllegalStateException if this method is called after
    *  this instance has been released
    */
   public abstract void responseComplete();

renderResponse：

/**
  * <p>Signal the JavaServer faces implementation that, as soon as the
  * current phase of the request processing lifecycle has been completed,
  * control should be passed to the <em>Render Response</em> phase,
  * bypassing any phases that have not been executed yet.</p>
  *
  * @throws IllegalStateException if this method is called after
  *  this instance has been released
  */
 public abstract void renderResponse();

responseComplete和renderResponse的关系有点象break和continue的关系，responseComplete指示当前的response已经产生，JSF应该在当前阶段执行完成后立刻整个生命周期，break的概念。renderResponse则是指示当前阶段执行结束后直接跳到Render Response阶段，继续生命周期，因此是continue的概念。

下面是LifeCycle的execute和render方法，更加证实了这些：

com.sun.faces.lifecycle.LifecycleImpl

// Execute the phases up to but not including Render Response
public void execute(FacesContext context) throws FacesException {

    if (context == null) {
        throw new NullPointerException
            (MessageUtils.getExceptionMessageString
             (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "context"));
    }

    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("execute(" + context + ")");
    }

    for (int i = 1, len = phases.length -1 ; i < len; i++) { // Skip ANY_PHASE placeholder

        if (context.getRenderResponse() ||
            context.getResponseComplete()) {
            break;
        }

        phases[i].doPhase(context, this, listeners.listIterator());

    }

}


// Execute the Render Response phase
public void render(FacesContext context) throws FacesException {

    if (context == null) {
        throw new NullPointerException
            (MessageUtils.getExceptionMessageString
             (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "context"));
    }

    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("render(" + context + ")");
    }

    if (!context.getResponseComplete()) {
        response.doPhase(context, this, listeners.listIterator());
    }

}