相关疑难解决方法(0)

这是一个有效的web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">

    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>

     <filter>
        <filter-name>rememberMeCookieFilter</filter-name>
        <filter-class>be.example.fun.jsp.filters.RememberMeCookieFilter</filter-class>
    </filter>

    <filter>
        <filter-name>mustBeSignedInFilter</filter-name>
        <filter-class>be.example.fun.jsp.filters.MustBeSignedInFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>rememberMeCookieFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <filter-mapping>
        <filter-name>mustBeSignedInFilter</filter-name>
        <url-pattern>/private/*</url-pattern>
    </filter-mapping>
</web-app>

当我删除<filter>元素并使用以下注释时:

@WebFilter(filterName="rememberMeCookieFilter")
public class RememberMeCookieFilter implements Filter

@WebFilter(filterName="mustBeSignedInFilter")
public class MustBeSignedInFilter implements Filter

然后Tomcat 7.0.14给我以下错误:

java.lang.IllegalArgumentException: Filter mapping must specify either a <url-pattern> or a <servlet-name>
    at org.apache.catalina.core.StandardContext.validateFilterMap(StandardContext.java:2956)
    at org.apache.catalina.core.StandardContext.addFilterMap(StandardContext.java:2915)
    at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1180)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1270)
        ...

我按照这个问题的答案,但这对我不起作用.

以下是我的Web应用程序的依赖项:

<dependencies>
        <!-- SLF4J (+ LOGBack) for logging -->
        <dependency> …