ServletRequestAttributeEvent (Java EE 5)

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javax.servlet Class ServletRequestAttributeEvent

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

All Implemented Interfaces:: Serializable

public class ServletRequestAttributeEvent
extends ServletRequestEvent

Extends: java.util.EventObject > ServletRequestEvent

这是一个事件类，用于通知有关应用程序中 servlet 请求的属性更改的信息。

since

Servlet 2.4

英文文档：

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

Since:: Servlet 2.4
See Also:: ServletRequestAttributeListener, Serialized Form

Field Summary

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

Constructor Summary
`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.

Method Summary
`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.

Methods inherited from class javax.servlet.ServletRequestEvent
`getServletContext, getServletRequest`

Methods inherited from class java.util.EventObject
`getSource, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

public ServletRequestAttributeEvent(ServletContext sc, ServletRequest request, String name, Object value)
给出此 Web 应用程序的 servlet 上下文、属性正发生更改的 ServletRequest 以及属性的名称和值，构造 ServletRequestAttributeEvent。

sc 发送该事件的 ServletContext。

request 发送该事件的 ServletRequest。

name 请求属性的名称。

value 请求属性的值。

英文文档：
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.

Parameters:: 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.

Method Detail

public String getName()
返回 ServletRequest 中更改的属性的名称。

return 更改的请求属性的名称

英文文档：
getName

public String getName()

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

Returns:: the name of the changed request attribute

public Object getValue()
返回已添加、移除或替换的属性的值。如果添加了属性，则这是属性的值。如果移除了属性，则这是被移除属性的值。如果替换了属性，则这是属性原来的值。

return 更改的请求属性的值

英文文档：
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.

Returns:: the value of the changed request attribute