<p>看到开源项目发布的时候都带一个 jsp 容器(jetty)。拿来做 demo、开发、调试的服务器还是很不错的。今天就小试下，主要把它运行起来。</p>    <p>第一步下载：<a href="/misc/goto?guid=4959221551227468901">http://dist.codehaus.org/jetty/jetty-6.1.14/jetty-6.1.14.zip</a> 是目前最新的稳定版。解压到如E:\jetty-6.1.14，其中比较重要的目录是：etc、contexts、webapps。个人认为可以类比tomcat的conf、conf\Catalina\localhost、webapps目录。contexts是热部署用的。</p>    <p>试运行下，可以把一个简单的web项目到到webapps目录下，或是*.war，如：web-demo（或web-demo.war）放到webapps目录下。</p>    <p>E:\jetty-6.1.14>java -jar start.jar   <br /> 2009-01-13 15:34:38.937::INFO:  Logging to STDERR via org.mortbay.log.StdErrLog   <br /> 2009-01-13 15:34:39.265::INFO:  jetty-6.1.14   <br /> 2009-01-13 15:34:39.421::INFO:  Deploy E:\jetty-6.1.14\contexts\javadoc.xml -> <a href="/misc/goto?guid=4959221551500282462">org.mortbay.jetty.handler.ContextHandler@15cda3f{/javadoc,file:/E:/jetty-6.1.14/javadoc/</a>}   <br /> ...   <br /> 2009-01-13 15:35:01.828::INFO:  Opened E:\jetty-6.1.14\logs\2009_01_13.request.log   <br /> 2009-01-13 15:35:01.953::INFO:  Started <a href="/misc/goto?guid=4959221551584211660">SelectChannelConnector@127.0.0.1:8080</a>  </p>    <p>E:\jetty-6.1.14>java -jar start.jar<br /> 2009-01-13 15:34:38.937::INFO:  Logging to STDERR via org.mortbay.log.StdErrLog<br /> 2009-01-13 15:34:39.265::INFO:  jetty-6.1.14<br /> 2009-01-13 15:34:39.421::INFO:  Deploy E:\jetty-6.1.14\contexts\javadoc.xml -> <a href="/misc/goto?guid=4959221551500282462">org.mortbay.jetty.handler.ContextHandler@15cda3f{/javadoc,file:/E:/jetty-6.1.14/javadoc/</a>}<br /> ...<br /> 2009-01-13 15:35:01.828::INFO:  Opened E:\jetty-6.1.14\logs\2009_01_13.request.log<br /> 2009-01-13 15:35:01.953::INFO:  Started <a href="/misc/goto?guid=4959221551584211660">SelectChannelConnector@127.0.0.1:8080</a><br /> 打开：<a href="/misc/goto?guid=4959221551686150260">http://localhost:8080/web-demo</a> ，恩有结果了。</p>    <p>如果不把web-demo放到webapps目录下也可，在contexts目录下建立一个文件告诉jetty就行了。可以在contexts目录下复制test.xml为web-demo.xml，然后修改如下：</p>    <pre class="brush:xml; toolbar: true; auto-links: false;"><?xml version="1.0"  encoding="ISO-8859-1"?>  <!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd">    <Configure class="org.mortbay.jetty.webapp.WebAppContext">      <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->    <!-- Required minimal context configuration :                        -->    <!--  + contextPath                                                  -->    <!--  + war OR resourceBase                                          -->    <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->    <Set name="contextPath">/web-demo</Set>    <Set name="war">e:/workspace/web-demo/WebContent</Set>      <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->    <!-- Optional context configuration                                  -->    <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->    <Set name="extractWAR">false</Set>    <Set name="copyWebDir">false</Set>    <Set name="defaultsDescriptor"><SystemProperty name="jetty.home" default="."/>/etc/webdefault.xml</Set>    <!--    <Set name="overrideDescriptor"><SystemProperty name="jetty.home" default="."/>/contexts/test.d/override-web.xml</Set>    -->  </Configure>   <?xml version="1.0"  encoding="ISO-8859-1"?> <!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd">  <Configure class="org.mortbay.jetty.webapp.WebAppContext">    <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->   <!-- Required minimal context configuration :                        -->   <!--  + contextPath                                                  -->   <!--  + war OR resourceBase                                          -->   <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->   <Set name="contextPath">/web-demo</Set>   <Set name="war">e:/workspace/web-demo/WebContent</Set>    <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->   <!-- Optional context configuration                                  -->   <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->   <Set name="extractWAR">false</Set>   <Set name="copyWebDir">false</Set>   <Set name="defaultsDescriptor"><SystemProperty name="jetty.home" default="."/>/etc/webdefault.xml</Set>   <!--   <Set name="overrideDescriptor"><SystemProperty name="jetty.home" default="."/>/contexts/test.d/override-web.xml</Set>   --> </Configure></pre>    <br />    <p>war可以设置成绝对路径。然后再重启jetty试试看。好了， 对jetty的初步认识到这里。</p>    <p>下面再来看下，怎么把它放到项目中。现我有一示例项目 e:/workspace/web-demo（称为project_home），里面的Web根目录是WebContent。在project_home建一个jetty目录，子目录如：contexts、etc、lib。把${jetty_home}/etc目录下的jetty.xml、webdefault.xml文件复制到${project_home}/jetty/etc目录中，把${jetty_home}/lib/jsp-2.1目录复制到${project_home}/jetty/lib目录下（如果不复制jsp-2.1或jsp-2.0也可以正常启动，只是不能解析jsp，打开主页时提示 JSP not support），同样把jetty-6.1.14.jar、jetty-util-6.1.14.jar、servlet-api-2.5-6.1.14.jar复制到${project_home}/jetty/lib目录下，${jetty_home}/start.jar复制到${project_home}/jetty目录下。</p>    <p>接下来在${project_home}/jetty/contexts目录下加一个文件。可以是上面给出的web-demo.xml。不过war 可以改为</p>    <pre class="brush:xml; toolbar: true; auto-links: false;"><Set name="war"><SystemProperty name="jetty.home" default="."/>/../WebContent</Set>    <Set name="war"><SystemProperty name="jetty.home" default="."/>/../WebContent</Set></pre>    <p>注释${project_home}/jetty/etc/jetty.xml文件中的：</p>    <pre class="brush:xml; toolbar: true; auto-links: false;">         <!--            <Item>             <New id="RequestLog" class="org.mortbay.jetty.handler.RequestLogHandler"/>           </Item>           -->    <!--     <Call name="addLifeCycle">      <Arg>        <New class="org.mortbay.jetty.deployer.WebAppDeployer">          <Set name="contexts"><Ref id="Contexts"/></Set>          <Set name="webAppDir"><SystemProperty name="jetty.home" default="."/>/webapps</Set>    <Set name="parentLoaderPriority">false</Set>    <Set name="extract">true</Set>    <Set name="allowDuplicates">false</Set>          <Set name="defaultsDescriptor"><SystemProperty name="jetty.home" default="."/>/etc/webdefault.xml</Set>        </New>      </Arg>    </Call>    -->      <!--         <Item>          <New class="org.mortbay.jetty.security.HashUserRealm">            <Set name="name">Test Realm</Set>            <Set name="config"><SystemProperty name="jetty.home" default="."/>/etc/realm.properties</Set>            <Set name="refreshInterval">0</Set>          </New>        </Item>       -->  <!--     <Ref id="RequestLog">      <Set name="requestLog">        <New id="RequestLogImpl" class="org.mortbay.jetty.NCSARequestLog">          <Set name="filename"><SystemProperty name="jetty.logs" default="./logs"/>/yyyy_mm_dd.request.log</Set>          <Set name="filenameDateFormat">yyyy_MM_dd</Set>          <Set name="retainDays">90</Set>          <Set name="append">true</Set>          <Set name="extended">false</Set>          <Set name="logCookies">false</Set>          <Set name="LogTimeZone">GMT</Set>        </New>      </Set>    </Ref>    -->              <!--            <Item>              <New id="RequestLog" class="org.mortbay.jetty.handler.RequestLogHandler"/>            </Item>            -->     <!--     <Call name="addLifeCycle">       <Arg>         <New class="org.mortbay.jetty.deployer.WebAppDeployer">           <Set name="contexts"><Ref id="Contexts"/></Set>           <Set name="webAppDir"><SystemProperty name="jetty.home" default="."/>/webapps</Set>     <Set name="parentLoaderPriority">false</Set>     <Set name="extract">true</Set>     <Set name="allowDuplicates">false</Set>           <Set name="defaultsDescriptor"><SystemProperty name="jetty.home" default="."/>/etc/webdefault.xml</Set>         </New>       </Arg>     </Call>     -->       <!--         <Item>           <New class="org.mortbay.jetty.security.HashUserRealm">             <Set name="name">Test Realm</Set>             <Set name="config"><SystemProperty name="jetty.home" default="."/>/etc/realm.properties</Set>             <Set name="refreshInterval">0</Set>           </New>         </Item>        -->   <!--     <Ref id="RequestLog">       <Set name="requestLog">         <New id="RequestLogImpl" class="org.mortbay.jetty.NCSARequestLog">           <Set name="filename"><SystemProperty name="jetty.logs" default="./logs"/>/yyyy_mm_dd.request.log</Set>           <Set name="filenameDateFormat">yyyy_MM_dd</Set>           <Set name="retainDays">90</Set>           <Set name="append">true</Set>           <Set name="extended">false</Set>           <Set name="logCookies">false</Set>           <Set name="LogTimeZone">GMT</Set>         </New>       </Set>     </Ref>     --></pre>    <br />    <p>RequestLog 是访问记录，不注释也可，前提就是有logs目录。<br /> addLifeCycle 不注释也行，前提是有webapps目录。<br /> Test Realm 不注释也是，前提是etc目录下有realm.properties。</p>    <p>配置好了，现在到E:\workspace\web-demo\jetty，运行java -jar start.jar 可以启动这个项目了。</p>