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JavaMail API 基础教程 用于收发文件

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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>练习 1. 如何设置 JavaMail 环境</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 2 页（共13 页）</nobr></font></td>
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<p>在这个练习中，您将安装 Sun 的 JavaMail 相关工具。安装结束后，将介绍符合参考实现的演示程序。</p>
<p>
<b>任务 1：</b>

<br>请下载 Sun 的 <a href="http://java.sun.com/products/javamail/">JavaMail API 实现</a> 的最新版本。
</p>
<p>
<b>任务 2：</b>

<br>请下载 Sun 的 <a href="http://java.sun.com/products/javabeans/glasgow/jaf.html">JavaBeans Activation Framework</a> 的最新版本。</p>
<p>
<b>任务 3：</b>

<br>解压缩下载的软件包。您就得到能支持所有平台的两个包的 ZIP 文件。</p>
<blockquote>
<p>
<b>任务 3 的帮助：</b>

<br>你可以使用 <code>jar</code> 工具将包解压缩。</p>
</blockquote>
<p>
<b>任务 4：</b>

<br>
将 JavaMail 1.2 下载软件包中的 <code>mail.jar</code> 文件以及 JavaBeans Activation Framework 下载软件包中的 <code>activation.jar</code> 文件添加到您的 <code>CLASSPATH</code> 中。</p>
<blockquote>
<p>
<b>任务 4 的帮助：</b>

<br>将文件复制到您的扩展库目录下面。Microsoft Windows 的用户使用缺省的安装复制，可输入如下命令：
</p>


<p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
cd \javamail-1.2
copy mail.jar \jdk1.3\jre\lib\ext
cd \jaf-1.0.1
copy activation.jar \jdk1.3\jre\lib\ext
</code>
</pre>
</p>


<p>如果您不愿意将文件复制到扩展库目录，Sun 提供在 Windows NT 上设置 CLASSPATH 的<a href="http://java.sun.com/products/javamail/classpath-NT.html">详细指导</a>。</p>
</blockquote>
<p>
<b>任务 5：</b>

<br>
进入 JavaMail API 工具的 <code>demo</code> 目录，编译 <code>msgsend</code> 程序以发送一条测试消息。</p>
<blockquote>
<p>
<b>任务 5 的帮助：</b>

<br>

<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
javac msgsend.java
</code>
</pre>
</p>
</blockquote>
<p>
<b>任务 6：</b>

<br>
执行程序，用 <code>-o</code> 选项传入 <i>from</i> 地址、用 <code>-M</code> 选项传入 SMTP 服务器，还有传入 <i>to</i> 地址（没有选项）。然后，您输入主题，消息正文和文件结束符（CTRL-Z）标志消息输入结束。</p>
<blockquote>
<p>
<b>任务 6 的帮助：</b>

<br>务必替换 <i>from</i> 地址、SMTP 服务器和 <i>to</i> 地址。</p>


<p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
java msgsend -o from@address -M SMTP.Server to@address
</code>
</pre>
</p>


<p>如果您不能确定您的 SMTP 服务器，请联系您的系统管理员或与您的互联网服务供应商核对。</p>
</blockquote>
<p>
<b>任务 7：</b>

<br>
用您的标准邮件阅读程序（Eudora、Outlook Express、pine...）检查，确保消息已收到。</p>
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