获取 NoSuchMethodError:javax.servlet.ServletContext.getVirtualServerName() [英] Getting NoSuchMethodError:javax.servlet.ServletContext.getVirtualServerName()

问题描述

我在 Tomcat 8 中部署服务时遇到问题.出现以下错误:

I am facing an issue during deployment of a service in Tomcat 8. Getting following error :

引起:java.lang.NoSuchMethodError:javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;在 org.apache.tomcat.websocket.server.WsServerContainer.(WsServerContainer.java:149)在 org.apache.tomcat.websocket.server.WsSci.init(WsSci.java:131)在 org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:47)在 org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5244)在 org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)……还有 10 个

Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String; at org.apache.tomcat.websocket.server.WsServerContainer.(WsServerContainer.java:149) at org.apache.tomcat.websocket.server.WsSci.init(WsSci.java:131) at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:47) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5244) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 10 more

方法 getVirtualServerName 是在 Servlet 3.1 中引入的，在从我的 servlet-api jar 中提取 MANIFEST.MF 后，我得到了以下详细信息:

Method getVirtualServerName was introduced in Servlet 3.1 and after extracting MANIFEST.MF from my servlet-api jar I got following details :

Specification-Title: Java API for Servlets 
Specification-Version: 3.1 
Specification-Vendor: Sun Microsystems, Inc. 
Implementation-Title: javax.servlet 

也就是说它有 3.1.那么这个错误还有其他原因吗?请帮忙

Which says that its having 3.1. So is there any other reason for this error? Please help

推荐答案

检查您的所有 Maven(或等效项)依赖项，并确保您——或者很可能是另一个依赖项——没有引入 3.1 之前的 javax.servlet/servlet-api 可能优先于 Tomcat 8 中的内容.如果您已手动部署，请确保您没有将任何 servlet-api JAR 手动复制到 Tomcat 本身中.

Check all your Maven (or equivalent) dependencies and make sure that you - or most likely another dependency - are not pulling in a pre-3.1 version of the javax.servlet / servlet-api that may be taking precedence over what's in your Tomcat 8. If you've manually deployed, make sure you haven't manually copied any servlet-api JARs into Tomcat itself.

参见:https://stackoverflow.com/a/26232535/954442

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