Servlet--ServletException类，UnavailableException类

标签：servletexception类   unavailableexception   

• ServletException类

• UnavailableException类

构造一个包含指定的描述信息的新的异常。如果这个构造函数有一个关于秒数的参数，这将给出 Servlet 发生临时无效后，能够重新处理请求的估计时间。如果不包含这个参数，这意味着这个 Servlet 永久无效。

如果这个 Servlet 永久无效，返回布尔值 true，指示必须采取一些管理行动以使得这个Servlet 可用。

package javax.servlet;

public class UnavailableException extends ServletException
{
  private Servlet servlet;
  private boolean permanent;
  private int seconds;

  /** @deprecated */
  public UnavailableException(Servlet servlet, String msg)
  {
    super(msg);
    this.servlet = servlet;
    this.permanent = true;
  }

  /** @deprecated */
  public UnavailableException(int seconds, Servlet servlet, String msg)
  {
    super(msg);
    this.servlet = servlet;
    if (seconds <= 0)
      this.seconds = -1;
    else
      this.seconds = seconds;
    this.permanent = false;
  }

  public UnavailableException(String msg)
  {
    super(msg);

    this.permanent = true;
  }

  public UnavailableException(String msg, int seconds)
  {
    super(msg);

    if (seconds <= 0)
      this.seconds = -1;
    else {
      this.seconds = seconds;
    }
    this.permanent = false;
  }

  public boolean isPermanent()
  {
    return this.permanent;
  }

  /** @deprecated */
  public Servlet getServlet()
  {
    return this.servlet;
  }

  public int getUnavailableSeconds()
  {
    return this.permanent ? -1 : this.seconds;
  }
}

Servlet--ServletException类，UnavailableException类

标签：servletexception类   unavailableexception   

原文地址：http://blog.csdn.net/u011794238/article/details/46502471