jspintro2.html

j2eePDF格式的电子书

&nbsp;&nbsp;&nbsp;&nbsp;&lt;<code class="cCodeBold">c:choose</code>&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;<code class="cCodeBold">c:when</code> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;test=&quot;<code class="cCodeBold">${f:equals(selectedLocaleString,
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;localeString)}</code>&quot; &gt;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;option selected&gt;<code class="cCodeBold">${localeString}</code>&lt;/option&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;/c:when&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;c:otherwise&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;option&gt;<code class="cCodeBold">${localeString}</code>&lt;/option&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;/c:otherwise&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&lt;/c:choose&gt;
&nbsp;&nbsp;&lt;/c:when&gt;
&nbsp;&nbsp;&lt;<code class="cCodeBold">c:otherwise</code>&gt;
&nbsp;&nbsp;&nbsp;&nbsp;&lt;option&gt;<code class="cCodeBold">${localeString}</code>&lt;/option&gt;
&nbsp;&nbsp;&lt;/c:otherwise&gt;
&lt;/c:choose&gt;
&lt;/c:forEach&gt;
&lt;/select&gt;
&lt;input type=&quot;submit&quot; name=&quot;Submit&quot; value=&quot;Get Date&quot;&gt;
&lt;/form&gt;

&lt;<code class="cCodeBold">c:if</code> test=&quot;${selectedFlag}&quot; &gt;
&nbsp;&nbsp;&lt;<code class="cCodeBold">jsp:setProperty</code> name=&quot;locales&quot;
&nbsp;&nbsp;&nbsp;&nbsp;property=&quot;selectedLocaleString&quot;
&nbsp;&nbsp;&nbsp;&nbsp;value=&quot;<code class="cCodeBold">${selectedLocaleString}</code>&quot; /&gt;
&nbsp;&nbsp;&lt;<code class="cCodeBold">jsp:useBean</code> id=&quot;date&quot; class=&quot;mypkg.MyDate&quot;/&gt;
&nbsp;&nbsp;&lt;<code class="cCodeBold">jsp:setProperty</code> name=&quot;date&quot; property=&quot;locale&quot;
&nbsp;&nbsp;&nbsp;&nbsp;value=&quot;<code class="cCodeBold">${locales.selectedLocale}</code>&quot;/&gt;
&nbsp;&nbsp;&lt;b&gt;Date: &lt;/b&gt;<code class="cCodeBold">${date.date}
</code>&lt;/c:if&gt;
&lt;/body&gt;
&lt;/html&gt;<a name="wp75698"> </a>
</pre></div>
</ul></div>
<a name="wp85262"> </a><p class="pBody">
A sample <code class="cCode">date.war</code> is provided in <code class="cCode">&lt;</code><code class="cVariable">INSTALL</code><code class="cCode">&gt;/j2eetutorial14/examples/web/provided-wars/</code>. To build, package, deploy, and execute this example:
</p>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp85353"> </a><div class="pSmartList1"><li>In a terminal window, go to<code class="cCode"> &lt;</code><code class="cVariable">INSTALL</code><code class="cCode">&gt;/j2eetutorial14/examples/web/date/</code>.</li></div>
<a name="wp85354"> </a><div class="pSmartList1"><li>Run <code class="cCode">asant</code> <code class="cCode">build</code>. This target will spawn any necessary compilations and copy files to the <code class="cCode">&lt;</code><code class="cVariable">INSTALL</code><code class="cCode">&gt;/j2eetutorial14/examples/web/date/build/</code> directory. </li></div>
<a name="wp85355"> </a><div class="pSmartList1"><li>Start the J2EE application server.</li></div>
<a name="wp96781"> </a><div class="pSmartList1"><li>Start <code class="cCode">deploytool</code>. </li></div>
<a name="wp96782"> </a><div class="pSmartList1"><li>Create a Web application called <code class="cCode">date</code> by running the New Web Component Wizard. Select File<span style="font-family: Symbol"><img src="images/arrwrite.gif" border="0" alt="Right Arrow"></span>New<span style="font-family: Symbol"><img src="images/arrwrite.gif" border="0" alt="Right Arrow"></span>Web Component.</li></div>
<a name="wp96783"> </a><div class="pSmartList1"><li>New Web Component Wizard</li></div>
<div class="pSmartList2"><ol type="a" class="pSmartList2">
<a name="wp96784"> </a><div class="pSmartList2"><li>Select the Create New Stand-Alone WAR Module radio button.</li></div>
<a name="wp96785"> </a><div class="pSmartList2"><li>In the WAR Location field, enter <code class="cCode">&lt;</code><code class="cVariable">INSTALL</code><code class="cCode">&gt;/docs/tutorial/examples/web/date/date.war</code>.</li></div>
<a name="wp96786"> </a><div class="pSmartList2"><li>In the WAR Name field, enter <code class="cCode">date</code>.</li></div>
<a name="wp96787"> </a><div class="pSmartList2"><li>In the Context Root field, enter <code class="cCode">/date</code>.</li></div>
<a name="wp96788"> </a><div class="pSmartList2"><li>Click Edit. </li></div>
<a name="wp96789"> </a><div class="pSmartList2"><li>In the Edit Contents dialog, navigate to <code class="cCode">&lt;</code><code class="cVariable">INSTALL</code><code class="cCode">&gt;/j2eetutorial14/examples/web/date/build/</code>. Select the <code class="cCode">index.jsp</code> JSP page and the <code class="cCode">mypkg</code> package and click Add, then click OK.</li></div>
<a name="wp96790"> </a><div class="pSmartList2"><li>Click Next.</li></div>
<a name="wp96791"> </a><div class="pSmartList2"><li>Select the JSP radio button. </li></div>
<a name="wp96792"> </a><div class="pSmartList2"><li>Click Next.</li></div>
<a name="wp96793"> </a><div class="pSmartList2"><li>Select <code class="cCode">index.jsp</code> from the JSP file combo box. </li></div>
<a name="wp96794"> </a><div class="pSmartList2"><li>Click Finish.</li></div>
</ol></div>
<a name="wp96795"> </a><div class="pSmartList1"><li>Select File<span style="font-family: Symbol"><img src="images/arrwrite.gif" border="0" alt="Right Arrow"></span>Save.</li></div>
<a name="wp96796"> </a><div class="pSmartList1"><li>Deploy the application. </li></div>
<div class="pSmartList2"><ol type="a" class="pSmartList2">
<a name="wp96797"> </a><div class="pSmartList2"><li>Select Tools<span style="font-family: Symbol"><img src="images/arrwrite.gif" border="0" alt="Right Arrow"></span>Deploy. </li></div>
<a name="wp96798"> </a><div class="pSmartList2"><li>In the Connection Settings frame, enter the user name and password you specified when you installed the J2EE 1.4 Application Server.</li></div>
<a name="wp96799"> </a><div class="pSmartList2"><li>Click OK.</li></div>
<a name="wp96800"> </a><div class="pSmartList2"><li>A popup dialog will display the results of the deployment. Click Close.</li></div>
</ol></div>
<a name="wp66484"> </a><div class="pSmartList1"><li>Set the character encoding in your browser to UTF-8. </li></div>
<a name="wp84619"> </a><div class="pSmartList1"><li>Open the URL <code class="cCode">http://localhost:8080/date</code> in a browser.</li></div>
</ol></div>
<a name="wp83412"> </a><p class="pBody">
You will see a combo box whose entries are locales. Select a locale and click Get Date. You will see the date expressed in a manner appropriate for that locale. 
</p>
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