uTools-Manuals/docs/java/javax/management/PersistentMBean.html

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     javax.management 
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<h2 class="title" title="Interface PersistentMBean">Interface PersistentMBean</h2>
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         All Known Subinterfaces: 
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<span><a href="../../javax/management/modelmbean/ModelMBean.html" title="javax.management.modelmbean中的接口">ModelMBean</a></span>
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        所有已知实现类：
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<span><a href="../../javax/management/modelmbean/RequiredModelMBean.html" title="javax.management.modelmbean中的类">RequiredModelMBean</a></span>
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<hr/> <br/> <pre>public interface <span class="typeNameLabel">PersistentMBean</span></pre>
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<span>这个类是由MBeans实现的，旨在持久化的接口。</span>
<span>支持此接口的MBean应该在构建过程中调用load方法，以便从持久存储中引导MBean。</span>
<span>在ModelMBean的情况下，存储方法应由MBeanServer根据ModelMBean中的描述符或MBean本身在ModelMBean的正常处理期间调用。</span>
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<span class="simpleTagLabel">从以下版本开始：</span>
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         1.5 
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/PersistentMBean.html#load--">load</a></span>()</code>
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              使用在持久存储中找到的MBean数据来实例化此MBean实例。 
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/PersistentMBean.html#store--">store</a></span>()</code>
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              捕获此MBean实例的当前状态并将其写入持久存储。 
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<li class="blockList"> <h4>load</h4> <pre>void load()
   throws <a href="../../javax/management/MBeanException.html" title="class in javax.management">MBeanException</a>,
          <a href="../../javax/management/RuntimeOperationsException.html" title="class in javax.management">RuntimeOperationsException</a>,
          <a href="../../javax/management/InstanceNotFoundException.html" title="class in javax.management">InstanceNotFoundException</a></pre>
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<span>使用在持久存储中找到的MBean数据来实例化此MBean实例。</span>
<span>加载的数据可以包括属性和操作值。</span>
<span>在此实例的构建或初始化期间，以及在MBean注册到MBeanServer之前，应该调用此方法。</span>
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<span class="throwsLabel">异常</span>
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<code><a href="../../javax/management/MBeanException.html" title="class in javax.management">MBeanException</a></code> - 不支持包装另一个异常或持久性 
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<code><a href="../../javax/management/RuntimeOperationsException.html" title="class in javax.management">RuntimeOperationsException</a></code> - 从持久化机制中包装异常 
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<code><a href="../../javax/management/InstanceNotFoundException.html" title="class in javax.management">InstanceNotFoundException</a></code> - 无法从永久存储中找到或加载此MBean 
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<li class="blockList"> <h4>store</h4> <pre>void store()
    throws <a href="../../javax/management/MBeanException.html" title="class in javax.management">MBeanException</a>,
           <a href="../../javax/management/RuntimeOperationsException.html" title="class in javax.management">RuntimeOperationsException</a>,
           <a href="../../javax/management/InstanceNotFoundException.html" title="class in javax.management">InstanceNotFoundException</a></pre>
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<span>捕获此MBean实例的当前状态并将其写入持久存储。</span>
<span>存储的状态可以包括属性和操作值。</span>
<span>如果不支持这些持久性方法之一，将抛出“serviceNotFound”异常。</span>
<p> <span>使用MBean和属性描述符的持久性策略来指导该方法的执行。</span> <span>如果'persistPolicy'字段为：MBean应存储</span> </p>
<pre>  <span>!= "never"
   = "always"
   = "onTimer" and now &gt; 'lastPersistTime' + 'persistPeriod'
   = "NoMoreOftenThan" and now &gt; 'lastPersistTime' + 'persistPeriod'
   = "onUnregister"</span> </pre>
<p> <span>如果'persistPolicy'字段为：不存储MBean：</span> </p>
<pre>  <span>= "never"
    = "onUpdate"
    = "onTimer" &amp;&amp; now &lt; 'lastPersistTime' + 'persistPeriod'</span> </pre>
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<span class="throwsLabel">异常</span>
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<code><a href="../../javax/management/MBeanException.html" title="class in javax.management">MBeanException</a></code> - 不支持包装另一个异常或持久性 
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<code><a href="../../javax/management/RuntimeOperationsException.html" title="class in javax.management">RuntimeOperationsException</a></code> - 从持久性机制包装异常 
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<code><a href="../../javax/management/InstanceNotFoundException.html" title="class in javax.management">InstanceNotFoundException</a></code> - 找不到/访问永久存储 
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