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        16.6.1  配置文件(1)
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                        16.6.1  配置文件(1)
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                <div id="text"> <link href="css.css" rel="stylesheet" type="text/css" /><h3 style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 0cm; MARGIN-RIGHT: 0cm; FTEL: 8.15pt"><span lang="EN-US">16.6.1 &nbsp;</span><span style="FONT-FAMILY: 黑体">配置文件</span></h3>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体">使用配置文件可以替代把信道和对象配置写入到源代码中。如果使用配置文件,就可以在不改变源代码的情况下,重新配置信道,添加另外的信道等。</span><span lang="EN-US" style="COLOR: black">.NET</span><span style="COLOR: black; FONT-FAMILY: 宋体">平台上所有的配置文件都可以使用</span><span lang="EN-US" style="COLOR: black">XML</span><span style="COLOR: black; FONT-FAMILY: 宋体">。第</span><span lang="EN-US" style="COLOR: black">13~14</span><span style="COLOR: black; FONT-FAMILY: 宋体">章中的应用程序和配置文件都可以在这里使用。对于</span><span lang="EN-US" style="COLOR: black">.NET Remoting</span><span style="COLOR: black; FONT-FAMILY: 宋体">而言,可以使用一些</span><span lang="EN-US" style="COLOR: black">XML</span><span style="COLOR: black; FONT-FAMILY: 宋体">元素和特性来配置信道和远程对象。远程配置文件的不同之处是这个配置不需要放在应用程序配置文件中,该文件可以有任意名称。为了方便您阅读本章,我们将在应用程序配置文件中编写远程配置,配置文件的名称应该是可执行文件的名称后面跟上</span><span lang="EN-US" style="COLOR: black">.config</span><span style="COLOR: black; FONT-FAMILY: 宋体">后缀。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">在下载的代码</span><span lang="EN-US"> (www.wrox.com)</span><span style="FONT-FAMILY: 宋体">中,可以在客户机和服务器示例的根目录中找到下面的配置文件示例,即:</span><span lang="EN-US">clientactivated.config</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">wellknown.config</span><span style="FONT-FAMILY: 宋体">,客户机示例中还有一个</span><span lang="EN-US">wellknownhttp.config</span><span style="FONT-FAMILY: 宋体">配置文件,它指定了一个通向知名远程对象的</span><span lang="EN-US">HTTP</span><span style="FONT-FAMILY: 宋体">信道。为了使用这些配置文件,必须按照上面的规则对它们重命名,并把它们放到包含可执行文件的目录中。</span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体">下面就是一个配置文件的示例:</span></p>
<p class="2" style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">&lt;configuration&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp; &lt;system.runtime.remoting&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&lt;application FTEL=&quot;Hello&quot;&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;service&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;wellknown mode=&quot;SingleCall&quot; </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; type=&quot;Wrox.ProCSharp.Remoting.Hello, RemoteHello&quot; </span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; objectUri=&quot;Hi&quot; /&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/service&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;channels&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;channel ref=&quot;tcp&quot; port=&quot;6791&quot; /&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;channel ref=&quot;http&quot; port=&quot;6792&quot; /&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/channels&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/application&gt;</span></p>
<p class="2" style="MARGIN-LEFT: 21.45pt; FTEL: 18.45pt"><span lang="EN-US">&nbsp;&nbsp; &lt;/system.runtime.remoting&gt;</span></p>
<p class="2" style="MARGIN-TOP: 0cm; MARGIN-LEFT: 21.45pt; MARGIN-RIGHT: 0cm; FTEL: 18.45pt"><span lang="EN-US">&lt;/configuration&gt;</span></p>
<p class="MsoNormal"><span lang="EN-US">&lt;configuration&gt;</span><span style="FONT-FAMILY: 宋体">是所有</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">配置文件的</span><span lang="EN-US">XML</span><span style="FONT-FAMILY: 宋体">根元素。所有的远程配置都可以在子元素</span><span lang="EN-US">&lt;system.runtime.remoting&gt;</span><span style="FONT-FAMILY: 宋体">中找到。</span><span lang="EN-US">&lt;application&gt;</span><span style="FONT-FAMILY: 宋体">是</span><span lang="EN-US">&lt;system.runtime.remoting&gt;</span><span style="FONT-FAMILY: 宋体">的一个子元素。</span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体">下面讨论</span><span lang="EN-US" style="COLOR: black">&lt;system.runtime.remoting&gt;</span><span style="COLOR: black; FONT-FAMILY: 宋体">中的主要元素和特性:</span></p>
<p class="1" style="MARGIN-LEFT: 37.55pt; FTEL: -16.1pt"><span lang="EN-US">●<span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span style="FONT-FAMILY: 宋体">元素</span><span lang="EN-US">&lt;application&gt;</span><span style="FONT-FAMILY: 宋体">:使用这个元素的特性</span><span lang="EN-US">name</span><span style="FONT-FAMILY: 宋体">,可以指定应用程序的名称。在服务器端,特性</span><span lang="EN-US">name</span><span style="FONT-FAMILY: 宋体">的值是服务器的名称;而在客户端,特性</span><span lang="EN-US">name</span><span style="FONT-FAMILY: 宋体">的值是客户应用程序的名称。上面的示例是服务器的配置文件:</span><span lang="EN-US">&lt;application FTEL=&quot;Hello&quot;&gt; </span><span style="FONT-FAMILY: 宋体">把远程应用程序名称定义为</span><span lang="EN-US">Hello</span><span style="FONT-FAMILY: 宋体">,客户访问远程对象时可以把</span><span lang="EN-US">Hello</span><span style="FONT-FAMILY: 宋体">用作</span><span lang="EN-US">URL</span><span style="FONT-FAMILY: 宋体">的一部分。</span></p>

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