如何在 Tomcat 服务器上配置 Servlet 并修复 javax.naming.NameNotFoundException？

Question

最近我在 Tomcat 服务器上部署了一个应用程序。它不工作，因为应用程序找不到 Servlet。我认为 web.xml 中的 servlet-class 没问题，但显然 syntax/mapping 是错误的，因为他们找不到它...

web.xml

<servlet>
        <servlet-name>ControllerServlet</servlet-name>
        <servlet-class>controller.ControllerServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

catalina.log

INFO myapp.com-startStop-2 org.apache.catalina.startup.HostConfig - Deployment of web application archive /home/username/tomcat/webapps/myapp.com/ROOT.war has finished in 442 ms
INFO ContainerBackgroundProcessor[StandardEngine[Catalina]] org.apache.catalina.startup.HostConfig - Reloading context []
INFO ContainerBackgroundProcessor[StandardEngine[Catalina]] org.apache.catalina.core.StandardContext - Reloading Context with name [] has started
INFO ContainerBackgroundProcessor[StandardEngine[Catalina]] org.apache.catalina.core.ContainerBase.[Catalina].[myapp.com].[/] - Marking servlet ControllerServlet as unavailable
ERROR ContainerBackgroundProcessor[StandardEngine[Catalina]] org.apache.catalina.core.ContainerBase.[Catalina].[myapp.com].[/] - Servlet  threw load() exception
javax.naming.NameNotFoundException: Name [controller.ControllerServlet/categoryFacade] is not bound in this Context. Unable to find [controller.ControllerServlet].
    at org.apache.naming.NamingContext.lookup(NamingContext.java:818)
    at org.apache.naming.NamingContext.lookup(NamingContext.java:166)
    at org.apache.catalina.core.DefaultInstanceManager.lookupFieldResource(DefaultInstanceManager.java:603)
    at org.apache.catalina.core.DefaultInstanceManager.processAnnotations(DefaultInstanceManager.java:491)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:174)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4923)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5209)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3775)
    at org.apache.catalina.startup.HostConfig.reload(HostConfig.java:1307)
    at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1290)
    at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1474)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:280)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1141)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1377)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1381)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1349)
    at java.lang.Thread.run(Thread.java:745)

Answer 1

It's not working because the app can't find the Servlet.

错了。

javax.naming.NameNotFoundException: Name [controller.ControllerServlet/categoryFacade] is not bound in this Context. Unable to find [controller.ControllerServlet].

在命名资源中找不到名称controller.ControllerServlet您正在使用的地方java:comp/.../controller.ControllerServlet/categoryFacade .

我建议您首先查看您使用 categoryFacade 的位置。

如何在 Tomcat 服务器上配置 Servlet 并修复 javax.naming.NameNotFoundException？

How to configure Servlet on Tomcat Server and fix javax.naming.NameNotFoundException?

java

tomcat

web.xml

servlets

catalina