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| <h2 title="Interface ServletRequestAttributeListener" class="title">Interface ServletRequestAttributeListener</h2> |
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| <pre>public interface <span class="typeNameLabel">ServletRequestAttributeListener</span> |
| extends java.util.EventListener</pre> |
| <div class="block">Interface for receiving notification events about ServletRequest |
| attribute changes. |
| |
| <p>Notifications will be generated while the request |
| is within the scope of the web application. A ServletRequest |
| is defined as coming into scope of a web application when it |
| is about to enter the first servlet or filter of the web |
| application, and as going out of scope when it exits the last |
| servlet or the first filter in the chain. |
| |
| <p>In order to receive these notification events, the implementation |
| class must be either declared in the deployment descriptor of the web |
| application, annotated with <a href="../../javax/servlet/annotation/WebListener.html" title="annotation in javax.servlet.annotation"><code>WebListener</code></a>, |
| or registered via one of the addListener methods defined on |
| <a href="../../javax/servlet/ServletContext.html" title="interface in javax.servlet"><code>ServletContext</code></a>. |
| |
| <p>The order in which implementations of this interface are invoked is |
| unspecified.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>Servlet 2.4</dd> |
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| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/servlet/ServletRequestAttributeListener.html#attributeAdded-javax.servlet.ServletRequestAttributeEvent-">attributeAdded</a></span>(<a href="../../javax/servlet/ServletRequestAttributeEvent.html" title="class in javax.servlet">ServletRequestAttributeEvent</a> srae)</code> |
| <div class="block">Receives notification that an attribute has been added to the |
| ServletRequest.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/servlet/ServletRequestAttributeListener.html#attributeRemoved-javax.servlet.ServletRequestAttributeEvent-">attributeRemoved</a></span>(<a href="../../javax/servlet/ServletRequestAttributeEvent.html" title="class in javax.servlet">ServletRequestAttributeEvent</a> srae)</code> |
| <div class="block">Receives notification that an attribute has been removed from the |
| ServletRequest.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../javax/servlet/ServletRequestAttributeListener.html#attributeReplaced-javax.servlet.ServletRequestAttributeEvent-">attributeReplaced</a></span>(<a href="../../javax/servlet/ServletRequestAttributeEvent.html" title="class in javax.servlet">ServletRequestAttributeEvent</a> srae)</code> |
| <div class="block">Receives notification that an attribute has been replaced on the |
| ServletRequest.</div> |
| </td> |
| </tr> |
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| <h4>attributeAdded</h4> |
| <pre>default void attributeAdded(<a href="../../javax/servlet/ServletRequestAttributeEvent.html" title="class in javax.servlet">ServletRequestAttributeEvent</a> srae)</pre> |
| <div class="block">Receives notification that an attribute has been added to the |
| ServletRequest.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srae</code> - the ServletRequestAttributeEvent containing the |
| ServletRequest and the name and value of the attribute that was |
| added</dd> |
| </dl> |
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| <h4>attributeRemoved</h4> |
| <pre>default void attributeRemoved(<a href="../../javax/servlet/ServletRequestAttributeEvent.html" title="class in javax.servlet">ServletRequestAttributeEvent</a> srae)</pre> |
| <div class="block">Receives notification that an attribute has been removed from the |
| ServletRequest.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srae</code> - the ServletRequestAttributeEvent containing the |
| ServletRequest and the name and value of the attribute that was |
| removed</dd> |
| </dl> |
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| <h4>attributeReplaced</h4> |
| <pre>default void attributeReplaced(<a href="../../javax/servlet/ServletRequestAttributeEvent.html" title="class in javax.servlet">ServletRequestAttributeEvent</a> srae)</pre> |
| <div class="block">Receives notification that an attribute has been replaced on the |
| ServletRequest.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srae</code> - the ServletRequestAttributeEvent containing the |
| ServletRequest and the name and (old) value of the attribute |
| that was replaced</dd> |
| </dl> |
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