Java-ServletConfig

/**
 *
 * A servlet configuration object used by a servlet container
 * to pass information to a servlet during initialization.
 *
 */
 //servlet 配置对象被servlet 容器来发送信息给servlet在初始化过程中
public interface ServletConfig {

    /**
     * Returns the name of this servlet instance.
     * The name may be provided via server administration, assigned in the
     * web application deployment descriptor, or for an unregistered (and thus
     * unnamed) servlet instance it will be the servlet's class name.
     *
     * @return		the name of the servlet instance
     */
	//servlet 实例的名称
    public String getServletName();

    /**
     * Returns a reference to the {@link ServletContext} in which the caller
     * is executing.
     * @return		a {@link ServletContext} object, used
     *			by the caller to interact with its servlet
     *                  container
     * @see		ServletContext
     *
     */
    //返回servlet上下文
    public ServletContext getServletContext();

    /**
     * Returns a <code>String</code> containing the value of the
     * named initialization parameter, or <code>null</code> if
     * the parameter does not exist.
     *
     * @param name	a <code>String</code> specifying the name
     *			of the initialization parameter
     *
     * @return		a <code>String</code> containing the value
     *			of the initialization parameter
     *
     */
    //返回某个name的参数值
    public String getInitParameter(String name);

    /**
     * Returns the names of the servlet's initialization parameters
     * as an <code>Enumeration</code> of <code>String</code> objects,
     * or an empty <code>Enumeration</code> if the servlet has
     * no initialization parameters.
     *
     * @return		an <code>Enumeration</code> of <code>String</code>
     *			objects containing the names of the servlet's
     *			initialization parameters
     *
     *
     *
     */
    //把servlet初始参数值作为一个枚举对象返回
    public Enumeration getInitParameterNames();

}