Question

我已在eclipse中创建了一个动态Web项目，如本文档中所述：sampledoc

当我在服务器中运行程序时，我在控制台中收到此错误：

Caused by: java.lang.IllegalArgumentException: The servlets named [Hello] and [com.crunchify.jsp.servlet.HelloCrunchify] are both mapped to the url-pattern [/CrunchifyServlet] which is not permitted
    at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:308)
    at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2373)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2055)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1940)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1934)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1934)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1934)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1934)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1147)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:779)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:306)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5150)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 6 more

我尝试从Servers选项卡中删除服务器并再次添加。项目干净了吗？似乎没有什么能解决问题。

我的web.xml如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<display-name>CrunchifyJSPServletExample</display-name>
<welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
    <servlet-name>Hello</servlet-name>
    <servlet-class>com.crunchify.jsp.servlet.HelloCrunchify</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>Hello</servlet-name>
    <url-pattern>/CrunchifyServlet</url-pattern>
</servlet-mapping>

我正在使用Tomcat 8，我的java home设置为＆＃34; javac 1.8.0_05＆＃34; 。请帮忙!!!

Answer 1

您省略了一些相关信息，您的其他servlet映射。错误告诉了所有：

Caused by: java.lang.IllegalArgumentException: The servlets named [Hello] and [com.crunchify.jsp.servlet.HelloCrunchify] are both mapped to the url-pattern [/CrunchifyServlet] which is not permitted

您有两个servlet映射，映射到相同的URI。尝试将/ CrunchifyServlet的URI更改为/ Crunchify

<servlet>
    <servlet-name>Hello</servlet-name>
    <servlet-class>com.crunchify.jsp.servlet.HelloCrunchify</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>Hello</servlet-name>
    <url-pattern>/Crunchify</url-pattern>
</servlet-mapping>

Answer 2

我认为该堆栈跟踪的关键部分是：

The servlets named [Hello] and [com.crunchify.jsp.servlet.HelloCrunchify] are both mapped to the url-pattern [/CrunchifyServlet] which is not permitted

您将需要删除其中一个servlet或取消冲突url-patterns。您是否有另一个映射到相同url-pattern的应用程序？

Answer 3

试试这个：

转到

C：\ Program Files \ Apache Software Foundation \ Apache Tomcat 8.x.xx \ bin

找到

catalina.bat中

将其复制并粘贴到另一个驱动器中，因为Windows不允许您在此处进行编辑。现在用任何编辑器打开文件。

找到noJuliConfig和noJuliManager，你会到达像这个图像的某个地方 Before Editing

你可以清楚地看到一个set JAVA_OTPS="Something"的noJuliConfig和noJuliManager。

现在您要做的就是删除双引号，编辑过的部分将如下所示After Editing

现在用这个编辑过的catalina.bat替换原来的catalina.bat。重新启动IDE。而且你已经完成了。

你可以稍后感谢我。：d

IllegalArgumentException：名为[Hello]和[com.crunchify.jsp.servlet.HelloCrunchify]的servlet都映射到url-pattern

3 个答案: