Question

UPDATE ：好吧，只有当我尝试在本地调试时，这似乎才是问题。当发布在Jetty（不是同一台机器）上时，效果很好。在本地调试时是否可以配置Run-Jetty-Run使用的jetty.xml文件？

我只是浪费了一个下午试图找到原因，但没有成功......

我正在为我的应用程序设置一个带有c3p0的连接池。顺便说一句，我正在使用Jetty 7。问题是当我执行context.lookup获取数据源时，我得到了这个异常：

javax.naming.NameNotFoundException; remaining name 'env/jdbc/DSTest'
at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:634)
at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:665)
at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:680)
at org.eclipse.jetty.jndi.java.javaRootURLContext.lookup(javaRootURLContext.java:113)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at com.see.metrics.SqlHelper.Initialize(SqlHelper.java:68)
at com.see.metrics.Metrics.Initialize(Metrics.java:45)
at com.see.game.GameProducer.generateMetadata(GameProducer.java:223)
at org.odata4j.producer.mongodb.MongoProducer.initMongo(MongoProducer.java:98)
at org.odata4j.producer.mongodb.MongoProducerFactory.create(MongoProducerFactory.java:55)
at org.odata4j.producer.resources.ODataProducerProvider.newProducerFromFactory(ODataProducerProvider.java:66)
at org.odata4j.producer.resources.ODataProducerProvider.getInstance(ODataProducerProvider.java:48)
at org.odata4j.producer.resources.ODataProducerProvider.getInstance(ODataProducerProvider.java:1)
at com.sun.jersey.core.impl.provider.xml.LazySingletonContextProvider.get(LazySingletonContextProvider.java:80)
at com.sun.jersey.core.impl.provider.xml.LazySingletonContextProvider.access$000(LazySingletonContextProvider.java:52)
at com.sun.jersey.core.impl.provider.xml.LazySingletonContextProvider$1.getValue(LazySingletonContextProvider.java:69)
at com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable$1.getValue(AbstractHttpContextInjectable.java:100)
at com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:43)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:119)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:166)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:990)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:346)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
at java.lang.Thread.run(Thread.java:662)

我有一个 jndi.properties 文件来配置我的InitialContext（位于我的资源文件夹src / main / resources中）

java.naming.factory.url.pkgs=org.eclipse.jetty.jndi
java.naming.factory.initial=org.eclipse.jetty.jndi.InitialContextFactory

我在webapp / WEB-INF文件夹中也有一个 jetty-env.xml 文件：

<Configure class="org.mortbay.jetty.webapp.WebAppContext">

<!--<Set name="ConfigurationClasses">
   <Ref id="plusConfig"/>
</Set>  -->

<!-- MySql datasource org.eclipse.jetty.plus.jndi.Resource Factory-->
<New id="DSTest" class="org.mortbay.jetty.plus.naming.Resource">
    <Arg></Arg>
    <Arg>jdbc/DSTest</Arg>
    <Arg>
     <New class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <Set name="driverClassName">com.mysql.jdbc.Driver</Set>
        <Set name="url">jdbc:mysql://host/</Set>
        <Set name="username">username</Set>
        <Set name="password">password</Set>
        <Set name="checkoutTimeout">5000</Set>
        <Set name="initialPoolSize">10</Set>
        <Set name="maxIdleTime">30</Set>
        <Set name="maxPoolSize">160</Set>
        <Set name="minPoolSize">10</Set>
        <Set name="maxStatements">200</Set>
        <Set name="maxConnectionAge">0</Set>
        <Set name="acquireIncrement">15</Set>
    </New>
  </Arg>
 </New>
</Configure>

我在 web.xml 文件中添加了这些行：

<resource-ref>
  <description>DB Connection</description>
  <res-ref-name>jdbc/DSTest</res-ref-name>
  <res-type>javax.sql.DataSource</res-type>
  <res-auth>Container</res-auth>
</resource-ref>

我似乎已经遵循了所有必需的步骤，但在执行查找时仍然会得到javax.naming.NameNotFoundException ...

任何提示？

谢谢！

修改：我忘记了如何进行查询。

InitialContext ctx = new InitialContext();
DataSource dataSource = (DataSource)ctx.lookup("java:comp/env/jdbc/DSTest");

Answer 1

愚蠢的问题但是这个页面http://docs.codehaus.org/display/JETTY/JNDI#JNDI-resref表明使用带Jetty的JNDI是一个需要启用的可选功能。

具体说它是执行此操作的类是org.mortbay.jetty.plus.webapp.Configuration，我们在定义org.mortbay时应用于webapp的配置列表中指定其名称.jetty.webapp.WebAppContext for it。

JNDI查找失败（NameNotFoundException）

1 个答案: