我遵循了这个问题的解决方案在 Java 构建路径上找不到超类“javax.servlet.http.HttpServlet” https://stackoverflow.com/questions/22756153/the-superclass-javax-servlet-http-httpservlet-was-not-found-on-the-java-build运行 Tomcat 服务器时出现此异常:
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/stpt-e]]
at java.util.concurrent.FutureTask.report(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:799)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/stpt-e]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 6 more
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> generate in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3279)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3254)
at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1430)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1344)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:876)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:374)
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.StandardContext.startInternal(StandardContext.java:5355)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more
这是如何引起的以及如何解决?
我已经创建了generate.java
servlet 但在该 servlet 中我更改了这段代码@WebServlet("/generate")
to @WebServlet("generate")
.
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