聊聊selenium的webdriver的超时参数

 /**
   * An interface for managing timeout behavior for WebDriver instances.
   */
  interface Timeouts {

    /**
     * Specifies the amount of time the driver should wait when searching for an element if it is
     * not immediately present.
     * <p>
     * When searching for a single element, the driver should poll the page until the element has
     * been found, or this timeout expires before throwing a {@link NoSuchElementException}. When
     * searching for multiple elements, the driver should poll the page until at least one element
     * has been found or this timeout has expired.
     * <p>
     * Increasing the implicit wait timeout should be used judiciously as it will have an adverse
     * effect on test run time, especially when used with slower location strategies like XPath.
     *
     * @param time The amount of time to wait.
     * @param unit The unit of measure for {@code time}.
     * @return A self reference.
     */
    Timeouts implicitlyWait(long time, TimeUnit unit);

    /**
     * Sets the amount of time to wait for an asynchronous script to finish execution before
     * throwing an error. If the timeout is negative, then the script will be allowed to run
     * indefinitely.
     *
     * @param time The timeout value.
     * @param unit The unit of time.
     * @return A self reference.
     * @see JavascriptExecutor#executeAsyncScript(String, Object...)
     */
    Timeouts setScriptTimeout(long time, TimeUnit unit);

    /**
     * Sets the amount of time to wait for a page load to complete before throwing an error.
     * If the timeout is negative, page loads can be indefinite.
     *
     * @param time The timeout value.
     * @param unit The unit of time.
     * @return A Timeouts interface.
     */
    Timeouts pageLoadTimeout(long time, TimeUnit unit);
  }