ServletRequestAttributeEvent (Java EE 5 SDK)

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Java EE 5 SDK

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摘要: 嵌套 | 字段 | 构造器 | 方法

详细信息: 字段 | 构造器 | 方法

javax.servlet Class ServletRequestAttributeEvent

java.lang.Object
  java.util.EventObject
      javax.servlet.ServletRequestEvent
          javax.servlet.ServletRequestAttributeEvent

所有已实现的接口:: Serializable

public class ServletRequestAttributeEvent
extends ServletRequestEvent

This is the event class for notifications of changes to the attributes of the servlet request in an application.

从以下版本开始:: Servlet 2.4
另请参见:: ServletRequestAttributeListener, Serialized Form

字段摘要

Fields inherited from class java.util.EventObject
`source`

构造器摘要
`ServletRequestAttributeEvent(ServletContext sc, ServletRequest request, String name, Object value)` Construct a ServletRequestAttributeEvent giving the servlet context of this web application, the ServletRequest whose attributes are changing and the name and value of the attribute.

方法摘要
`String`	`getName()` Return the name of the attribute that changed on the ServletRequest.
`Object`	`getValue()` Returns the value of the attribute that has been added, removed or replaced.

类方法继承 javax.servlet.ServletRequestEvent
`getServletContext, getServletRequest`

类方法继承 java.util.EventObject
`getSource, toString`

类方法继承 java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

构造器详细信息

ServletRequestAttributeEvent

public ServletRequestAttributeEvent(ServletContext sc,
                                    ServletRequest request,
                                    String name,
                                    Object value)

Construct a ServletRequestAttributeEvent giving the servlet context of this web application, the ServletRequest whose attributes are changing and the name and value of the attribute.

参数:: sc - the ServletContext that is sending the event.; request - the ServletRequest that is sending the event.; name - the name of the request attribute.; value - the value of the request attribute.

方法详细信息

getName

public String getName()

Return the name of the attribute that changed on the ServletRequest.

返回:: the name of the changed request attribute

getValue

public Object getValue()

Returns the value of the attribute that has been added, removed or replaced. If the attribute was added, this is the value of the attribute. If the attribute was removed, this is the value of the removed attribute. If the attribute was replaced, this is the old value of the attribute.

返回:: the value of the changed request attribute

概述