ServletContextAttributeEvent (Java EE 5)

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javax.servlet Class ServletContextAttributeEvent

java.lang.Object
  java.util.EventObject
      javax.servlet.ServletContextEvent
          javax.servlet.ServletContextAttributeEvent

All Implemented Interfaces:: Serializable

public class ServletContextAttributeEvent
extends ServletContextEvent

Extends: java.util.EventObject > ServletContextEvent

这是一个事件类，用于通知有关 Web 应用程序的 servlet 上下文属性更改的信息。

since

v 2.3

英文文档：

This is the event class for notifications about changes to the attributes of the servlet context of a web application.

Since:: v 2.3
See Also:: ServletContextAttributeListener, Serialized Form

Field Summary

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

Constructor Summary
`ServletContextAttributeEvent(ServletContext source, String name, Object value)` Construct a ServletContextAttributeEvent from the given context for the given attribute name and attribute value.

Method Summary
`String`	`getName()` Return the name of the attribute that changed on the ServletContext.
`Object`	`getValue()` Returns the value of the attribute that has been added, removed, or replaced.

Methods inherited from class javax.servlet.ServletContextEvent
`getServletContext`

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 ServletContextAttributeEvent(ServletContext source, String name, Object value)
为给定属性名称和属性值构造来自给定上下文的 ServletContextAttributeEvent。

英文文档：
ServletContextAttributeEvent

public ServletContextAttributeEvent(ServletContext source,
                                    String name,
                                    Object value)

Construct a ServletContextAttributeEvent from the given context for the given attribute name and attribute value.

Method Detail

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

英文文档：
getName

public String getName()

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

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。

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.