uTools-Manuals/docs/java/javax/management/modelmbean/package-summary.html

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<h1 class="title" title="Package">Package javax.management.modelmbean</h1>
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<div class="block">
      提供ModelMBean类的定义。 
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<p>See: <a href="#package.description">描述</a></p>
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<span>接口摘要</span>
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<th class="colFirst" scope="col">接口</th>
<th class="colLast" scope="col">描述</th>
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBean.html" title="interface in javax.management.modelmbean">ModelMBean</a></td>
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           该接口必须由ModelMBeans实现。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanInfo.html" title="interface in javax.management.modelmbean">ModelMBeanInfo</a></td>
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           该接口由ModelMBeanInfo为每个ModelMBean实现。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanNotificationBroadcaster.html" title="interface in javax.management.modelmbean">ModelMBeanNotificationBroadcaster</a></td>
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           该接口必须由ModelMBeans实现。 
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<span>类摘要</span>
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<th class="colFirst" scope="col">类</th>
<th class="colLast" scope="col">描述</th>
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<td class="colFirst"><a href="../../../javax/management/modelmbean/DescriptorSupport.html" title="class in javax.management.modelmbean">DescriptorSupport</a></td>
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           此类表示一个ModelMBean元素的元数据集。 
         </div> </td>
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanAttributeInfo.html" title="class in javax.management.modelmbean">ModelMBeanAttributeInfo</a></td>
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           ModelMBeanAttributeInfo对象描述了ModelMBean的属性。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanConstructorInfo.html" title="class in javax.management.modelmbean">ModelMBeanConstructorInfo</a></td>
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           ModelMBeanConstructorInfo对象描述了ModelMBean的构造函数。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanInfoSupport.html" title="class in javax.management.modelmbean">ModelMBeanInfoSupport</a></td>
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           此类表示ModelMBeans的元数据。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanNotificationInfo.html" title="class in javax.management.modelmbean">ModelMBeanNotificationInfo</a></td>
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           ModelMBeanNotificationInfo对象描述了由ModelMBean发出的通知。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/ModelMBeanOperationInfo.html" title="class in javax.management.modelmbean">ModelMBeanOperationInfo</a></td>
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           ModelMBeanOperationInfo对象描述了ModelMBean的管理操作。 
         </div> </td>
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<td class="colFirst"><a href="../../../javax/management/modelmbean/RequiredModelMBean.html" title="class in javax.management.modelmbean">RequiredModelMBean</a></td>
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           这个类是一个ModelMBean的实现。 
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<span>异常摘要</span>
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<th class="colFirst" scope="col">异常</th>
<th class="colLast" scope="col">描述</th>
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<td class="colFirst"><a href="../../../javax/management/modelmbean/InvalidTargetObjectTypeException.html" title="class in javax.management.modelmbean">InvalidTargetObjectTypeException</a></td>
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           指定无效目标对象类型时抛出异常。 
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<td class="colFirst"><a href="../../../javax/management/modelmbean/XMLParseException.html" title="class in javax.management.modelmbean">XMLParseException</a></td>
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           当将XML格式化的字符串解析为ModelMBean对象或从ModelMBean对象创建XML格式的字符串时，将抛出此异常。 
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<a name="package.description">
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<h2 title="Package javax.management.modelmbean Description">Package javax.management.modelmbean Description</h2>
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<p> <span>提供ModelMBean类的定义。</span> <span>MBean模型是一个MBean，用作管理界面和底层托管资源之间的桥梁。</span> <span>管理界面和被管理资源都被指定为Java对象。</span> <span>相同的Model MBean实现可以通过不同的管理接口和托管资源重复使用多次，并且可以提供常见的功能，如持久性和缓存。</span> </p>
<p> <span>MBean模型实现了<a href="../../../javax/management/modelmbean/ModelMBean.html" title="javax.management.modelmbean中的接口"><code>ModelMBean</code></a>接口。</span> <span>它是一个<a href="../../../javax/management/DynamicMBean.html" title="javax.management中的接口"><code>DynamicMBean</code></a> ，其<a href="../../../javax/management/DynamicMBean.html#getMBeanInfo--"><code>getMBeanInfo</code></a>方法返回一个实现<a href="../../../javax/management/modelmbean/ModelMBeanInfo.html" title="javax.management.modelmbean中的接口"><code>ModelMBeanInfo</code></a>的对象。</span> </p>
<p> <span>每个MBean都有一个<a href="../../../javax/management/MBeanInfo.html" title="javax.management中的类"><code>MBeanInfo</code></a> ，其中包含有关MBean本身及其属性，操作，构造函数和通知的信息。</span> <span>一个模型MBean增加了<code>MBeanInfo</code>与<a href="../../../javax/management/Descriptor.html" title="javax.management中的接口"><code>Descriptor</code></a> s编码附加信息的形式（键，值）对。</span> <span>通常， <code>Descriptor</code>是<code>DescriptorSupport</code>的<a href="../../../javax/management/modelmbean/DescriptorSupport.html" title="javax.management.modelmbean中的类">实例</a> 。</span> </p>
<p> <span><a href="../../../javax/management/modelmbean/RequiredModelMBean.html" title="javax.management.modelmbean中的类"><code>RequiredModelMBean</code>课程</a>提供了一个标准的MBean模型实现。</span> </p>
<p> <span>下面的示例示出了正在使用模型Mbean使<code>get</code>一个的方法<code>HashMap</code>通过MBean服务器可管理。</span> <span>没有其他方法可以通过MBean服务器。</span> <span>这里没有什么特别的关于<code>HashMap</code> 。</span> <span>任何公共类的公共方法都可以以相同的方式进行管理。</span> </p>
<pre>  <span>import java.lang.reflect.Method;
import java.util.HashMap;
import javax.management.*;
import javax.management.modelmbean.*;

// ...

MBeanServer mbs = MBeanServerFactory.createMBeanServer();
// The MBean Server

HashMap map = new HashMap();
// The resource that will be managed

// Construct the management interface for the Model MBean
Method getMethod = HashMap.class.getMethod("get", new Class[] {Object.class});
ModelMBeanOperationInfo getInfo =
    new ModelMBeanOperationInfo("Get value for key", getMethod);
ModelMBeanInfo mmbi =
    new ModelMBeanInfoSupport(HashMap.class.getName(),
                              "Map of keys and values",
                              null,  // no attributes
                              null,  // no constructors
                              new ModelMBeanOperationInfo[] {getInfo},
                              null); // no notifications

// Make the Model MBean and link it to the resource
ModelMBean mmb = new RequiredModelMBean(mmbi);
mmb.setManagedResource(map, "ObjectReference");

// Register the Model MBean in the MBean Server
ObjectName mapName = new ObjectName(":type=Map,name=whatever");
mbs.registerMBean(mmb, mapName);

// Resource can evolve independently of the MBean
map.put("key", "value");

// Can access the "get" method through the MBean Server
mbs.invoke(mapName, "get", new Object[] {"key"}, new String[] {Object.class.getName()});
// returns "value"</span> </pre>
<h2> <span><a name="spec">Package Specification</a></span> </h2>
<ul>
<li> <span>请参阅可从该<i>JMX 1.4规范</i> PDF文档<a href="../../../../technotes/guides/jmx/">Java Platform documentation on JMX technology</a></span> </li>
</ul>
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<dl>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
      1.5 
    </dd>
</dl>
</div>