jsp.htm

jsp初学者的选择,内容全面,初学易懂,html格式让你使用方便!

<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>〈td 
width=&quot;85%&quot; valign=&quot;top&quot;&gt;<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF">----------------------------------------------------------------------------------------------------------------<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>〈/td&gt;<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF"><span style="mso-spacerun: yes">&nbsp; </span>〈/tr&gt;<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span style="font-size:10.0pt;font-family:黑体;
color:#9900FF">〈<span lang="EN-US">/table&gt;<o:p>
</o:p>
</span></span></code></p>
<p class="MsoNormal"><code><span style="font-size:10.0pt;font-family:黑体;
color:#9900FF">〈<span lang="EN-US">/body&gt;<o:p>
</o:p>
</span></span></code></p>
<p class="MsoNormal"><code><span style="font-size:10.0pt;font-family:黑体;
color:#9900FF">〈<span lang="EN-US">/html&gt;<o:p>
</o:p>
</span></span></code></p>
<p class="MsoNormal"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">在浏览器的地址栏中键入</span><span lang="EN-US" style="color:#9900FF">http://localhost:8080/mypage.jsp.<br>
</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">这样网站的界面就能统一起来，而设计者可以集中精力在功能模块上处理用户登录、连接数据库、发送</span><span lang="EN-US" style="color:#9900FF">email</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">等等。每个</span><span lang="EN-US" style="color:#9900FF">JSP</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">文件都有如下结构：</span><span lang="EN-US" style="color:#9900FF"> 
<o:p>
</o:p>
</span></p>
<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF">&nbsp;<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span style="font-size:10.0pt;font-family:黑体;
color:#9900FF">〈<span lang="EN-US">%@ include file=&quot;top.htm&quot; %&gt;<o:p>
</o:p>
</span></span></code></p>
<p class="MsoNormal"><code><span style="font-size:10.0pt;font-family:黑体;
color:#9900FF">〈<span lang="EN-US">%<o:p>
</o:p>
</span></span></code></p>
<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF"><span style="mso-tab-count:2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
</span>// 实现某些功能<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span lang="EN-US" style="font-size:10.0pt;font-family:
黑体;color:#9900FF">%&gt;<o:p>
</o:p>
</span></code></p>
<p class="MsoNormal"><code><span style="font-size:10.0pt;font-family:黑体;
color:#9900FF">〈<span lang="EN-US">%@ include file=&quot;bot.htm&quot; %&gt;<o:p>
</o:p>
</span></span></code></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#9900FF"><br>
</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">维护网站的界面也相对比较容易，只要修改</span><span lang="EN-US" style="color:#9900FF">top.htm</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">和</span><span lang="EN-US" style="color:#9900FF">bot.htm</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">，就能影响到所有网页。</span><span lang="EN-US" style="color:#9900FF"> 
<o:p>
</o:p>
</span></p>
<p class="MsoNormal"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">五、</span><span style="color:#9900FF"> 
</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">服务器参数设置</span><span lang="EN-US" style="color:#9900FF"> 
<o:p>
</o:p>
</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#9900FF">JSWDK</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">的</span><span lang="EN-US" style="color:#9900FF">Web</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">服务器参数保存在</span><span lang="EN-US" style="color:#9900FF">\jswdk-1.0.1\webserver.xml</span><span style="font-family:
宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">中，用</span><span lang="EN-US" style="color:#9900FF">Windows</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">写字板打开并编辑这个文件就可以修改缺省设置值。本节内容主要针对</span><span lang="EN-US" style="color:#9900FF">JSWDK</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">，</span><span lang="EN-US" style="color:#9900FF">Linux</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">下</span><span lang="EN-US" style="color:#9900FF">Tomcat</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">的设置方法略有不同。</span><span lang="EN-US" style="color:#9900FF"><br>
JSWDK</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">缺省的文档目录是</span><span lang="EN-US" style="color:#9900FF">\jswdk-1.0.1\webpages</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">，在此目录下可以建立子目录，例如</span><span lang="EN-US" style="color:#9900FF">\jswdk-1.0.1\webpages\test</span><span style="font-family:
宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">，就能在浏览器中用</span><span lang="EN-US" style="color:#9900FF">http://localhost/test</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">访问这个目录，为了使得这个子目录能执行</span><span lang="EN-US" style="color:#9900FF">JSP</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">程序，还必须在</span><span lang="EN-US" style="color:#9900FF">webserver.xml</span><span style="font-family:
宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">中的〈</span><span lang="EN-US" style="color:#9900FF">Service&gt;</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">〈</span><span lang="EN-US" style="color:#9900FF">/Service&gt;</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">节加入：</span><span lang="EN-US" style="color:#9900FF"><br>
</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">〈</span><span lang="EN-US" style="color:#9900FF">WebApplication 
id=&quot;test&quot; mapping=&quot;/test&quot; docBase=&quot;webpages/test&quot; 
/&gt; </span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">并且，还必须建立</span><span lang="EN-US" style="color:#9900FF">\jswdk-1.0.1\webpages\test\WEB-INF</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">目录，并从</span><span lang="EN-US" style="color:
#9900FF">\jswdk-1.0.1\webpages\WEB-INF</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">目录中复制过来以下四个文件：</span><span lang="EN-US" style="color:#9900FF">mappings.properties</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">、</span><span lang="EN-US" style="color:#9900FF">mime.properties</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">、</span><span lang="EN-US" style="color:#9900FF">servlets.properties</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">以及</span><span lang="EN-US" style="color:#9900FF">webapp.properties</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">。完成这些过程，才能通知</span><span lang="EN-US" style="color:#9900FF">JSWDK</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">的</span><span lang="EN-US" style="color:#9900FF">Web</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">服务器执行</span><span lang="EN-US" style="color:#9900FF">http://localhost/test 
</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">中的</span><span lang="EN-US" style="color:#9900FF">JSP</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">程序。</span><span lang="EN-US" style="color:#9900FF"> <o:p>
</o:p>
</span></p>
<p class="MsoNormal"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">六、</span><span lang="EN-US" style="color:#9900FF"> 
JavaBean <o:p>
</o:p>
</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#9900FF">JSP</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">网页吸引人的地方之一就是能结合</span><span lang="EN-US" style="color:#9900FF">JavaBean</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">技术来扩充网页中程序的功能。</span><span lang="EN-US" style="color:#9900FF"> 
JavaBean</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">是一种</span><span lang="EN-US" style="color:#9900FF">Java</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">类</span><span lang="EN-US" style="color:#9900FF"> 
(class)</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">，通过封装属性和方法成为具有某种功能或者处理某个业务的对象。</span><span lang="EN-US" style="color:#9900FF">JavaBean</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">被组织成为</span><span lang="EN-US" style="color:#9900FF">package</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">（数据包）以便进行管理，实际上就是把一组</span><span lang="EN-US" style="color:#9900FF">JavaBean</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">一起放在某某目录中，每个类的定义前加上</span><span lang="EN-US" style="color:#9900FF">package</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">某某，本例中为</span><span lang="EN-US" style="color:#9900FF">test</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">。目录</span><span lang="EN-US" style="color:#9900FF">test</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">必须放在系统环境</span><span lang="EN-US" style="color:#9900FF">CLASSPATH</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;color:#9900FF">包含的目录下，系统才能找到其中的</span><span lang="EN-US" style="color:#9900FF">JavaBean</span><span style="font-family:宋体;
mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;
color:#9900FF">。</span><span lang="EN-US" style="color:#9900FF">JSWDK</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;;color:#9900FF">在缺省状态下将</span><span lang="EN-US" style="color:#9900FF">\jswdk-1.0.1\webpages\WEB-INF\jsp\beans\ 
</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family: