vaadin - 将参数传递给 vaadin 7 Web 应用程序

Question

我正在使用 vaadin6，所以我使用以下方法来检索 Web 应用程序参数:

public abstract class Application implements URIHandler,
        Terminal.ErrorListener, Serializable {

    /**
     * Searches for the property with the specified name in this application.
     * This method returns <code>null</code> if the property is not found.
     * 
     * See {@link #start(URL, Properties, ApplicationContext)} how properties
     * are defined.
     * 
     * @param name
     *            the name of the property.
     * @return the value in this property list with the specified key value.
     */
    public String getProperty(String name) {
        return properties.getProperty(name);
    }

    //...
}

迁移到 vaadin7 后，我想使用相同的功能，但找不到。

Answer 1

看来你在找

VaadinServlet.getCurrent().getServletContext().getInitParameter("name");

它授予对 web.xml 中定义的参数的访问权限，例如:

<context-param>
  <param-name>name</param-name>
  <param-value>John</param-value>
</context-param>