java - jetty 7 + MySQL 配置 [java.lang.ClassNotFoundException : org. mortbay.jetty.webapp.WebAppContext]

Question

我一直在尝试为 Jetty 配置 c3p0 db 连接池，但我不断收到 ClassNotFoundException:

2010-03-14 19:32:12.028:WARN::Failed startup of context WebAppContext@fccada@fccada/phpMyAdmin,file:/usr/local/jetty/webapps/phpMyAdmin/,file:/usr/local/jetty/webapps/phpMyAdmin/
java.lang.ClassNotFoundException: org.mortbay.jetty.webapp.WebAppContext
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
    at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:313)
    at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:266)
    at org.eclipse.jetty.util.Loader.loadClass(Loader.java:90)
    at org.eclipse.jetty.xml.XmlConfiguration.nodeClass(XmlConfiguration.java:224)
    at org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:187)
    at org.eclipse.jetty.webapp.JettyWebXmlConfiguration.configure(JettyWebXmlConfiguration.java:77)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:975)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:586)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:349)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55)
    at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:165)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:162)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55)
    at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:165)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55)
    at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:92)
    at org.eclipse.jetty.server.Server.doStart(Server.java:228)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55)
    at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:990)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:955)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.eclipse.jetty.start.Main.invokeMain(Main.java:394)
    at org.eclipse.jetty.start.Main.start(Main.java:546)
    at org.eclipse.jetty.start.Main.parseCommandLine(Main.java:208)
    at org.eclipse.jetty.start.Main.main(Main.java:75)

我是 Jetty 的新手，我希望最终通过 Quercus 和 JDBC 连接让 phpMyAdmin 和 WordPress 在其上运行。这是我的 WEB-INF 目录中的 web.xml 和 jetty-web.xml 文件。

jetty-web.xml:

<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd">
<Configure class="org.mortbay.jetty.webapp.WebAppContext">
    <New id="mysql" class="org.mortbay.jetty.plus.naming.Resource">
        <Arg>jdbc/mysql</Arg>
        <Arg>
            <New class="com.mchange.v2.c3p0.ComboPooledDataSource">
                <Set name="Url">jdbc:mysql://localhost:3306/mysql</Set>
                <Set name="User">user</Set>
                <Set name="Password">pw</Set>
            </New>
        </Arg>
    </New>
</Configure>

web.xml:

<?xml version="1.0"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
    <description>Caucho Technology's PHP Implementation</description>
    <resource-ref>
        <description>My DataSource Reference</description>
        <res-ref-name>jdbc/mysql</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>

    <servlet>
        <servlet-name>Quercus Servlet</servlet-name>
        <servlet-class>com.caucho.quercus.servlet.QuercusServlet</servlet-class>

        <!--
            Specifies the encoding Quercus should use to read in PHP scripts.
        -->
        <init-param>
            <param-name>script-encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>

        <!--
            Tells Quercus to use the following JDBC database and to ignore the
            arguments of mysql_connect().
        -->
        <init-param>
            <param-name>database</param-name>
            <param-value>jdbc/mysql</param-value>
        </init-param>

        <init-param>
            <param-name>ini-file</param-name>
            <param-value>WEB-INF/php.ini</param-value>
        </init-param>

    </servlet>

    <servlet-mapping>
        <servlet-name>Quercus Servlet</servlet-name>
        <url-pattern>*.php</url-pattern>
    </servlet-mapping>

    <welcome-file-list>
        <welcome-file>index.php</welcome-file>
    </welcome-file-list>
</web-app>

我猜我少了几个 jar 什么的。目前我已经在我的 WEB-INF/lib 目录中放置了以下 jars:

c3p0-0.9.1.2.jar
commons-dbcp-1.4.jar
commons-pool-1.5.4.jar
mysql-connector-java-5.1.12-bin.jar

我也尝试将这些 jars 放在 JETTY-HOME/lib/ext 中，但无济于事...有人请告诉我我的配置有什么问题。我厌倦了翻阅 Jetty 蹩脚的文档。

Answer 1

从 Jetty 7 开始，Jetty 成为了 Eclipse Foundation 的一个项目。在从 Jetty 6 迁移到 Eclipse Jetty 7 的过程中，采用了新的包结构(参见 Jetty 7 Refactoring 页):

• 来自 org.mortbay.jetty.webapp 的类现在位于 org.eclipse.jetty.webapp
• 来自 org.mortbay.jetty.plus.naming 的类现在位于 org.eclipse.jetty.plus.jndi

所以尝试使用以下 jetty-web.xml(未测试):

<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd">
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
    <New id="mysql" class="org.eclipse.jetty.plus.jndi.Resource">
        <Arg>jdbc/mysql</Arg>
        <Arg>
            <New class="com.mchange.v2.c3p0.ComboPooledDataSource">
                <Set name="Url">jdbc:mysql://localhost:3306/mysql</Set>
                <Set name="User">user</Set>
                <Set name="Password">pw</Set>
            </New>
        </Arg>
    </New>
</Configure>

但如果您不需要 Jetty 7 的花哨功能，我的建议是坚持使用 Jetty 6(更稳定、更多文档、更多 Internet 资源、更简单等，换句话说，痛苦更少)。