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>
元素并改为使用以下注释时:
@WebFilter(filterName="rememberMeCookieFilter")
public class RememberMeCookieFilter implements Filter
@WebFilter(filterName="mustBeSignedInFilter")
public class MustBeSignedInFilter implements Filter
然后Tomcat 7.0.14给出了以下错误:
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this question的回答,但这对我不起作用。
以下是我的网络应用程序的依赖项:
<dependencies>
<!-- SLF4J (+ LOGBack) for logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.4</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy</artifactId>
<version>1.8.3</version>
</dependency>
<!-- The servlet API that I installed in my local repo -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0</version>
<type>jar</type>
<scope>provided</scope>
<!--optional>false</optional-->
</dependency>
<!-- JUnit for testing -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
</dependencies>
编辑:我在使用Tomcat(7.0.14)时只遇到问题。 Glassfish很好。
答案 0 :(得分:11)
这是Tomcat 7中的一个错误。我将其报告为issue 53354。
由于无法在
@WebFilter
中指定调用顺序,因此用户必须在web.xml中明确指定<filter-mapping>
。这与Glassfish和JBoss AS中的@WebFilter(filterName)
结合使用如下:@WebFilter(filterName="filter1") public class Filter1 implements Filter {} @WebFilter(filterName="filter2") public class Filter2 implements Filter {}
与
<filter-mapping> <filter-name>filter1</filter-name> <url-pattern>/url1/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>filter2</filter-name> <url-pattern>/url2/*</url-pattern> </filter-mapping>
然而,它在Tomcat 7.0.27中失败并出现以下令人困惑的异常(
<url-pattern>
已设置)Caused by: java.lang.IllegalArgumentException: Filter mapping must specify either a <url-pattern> or a <servlet-name> at org.apache.catalina.core.StandardContext.validateFilterMap(StandardContext.java:3009) at org.apache.catalina.core.StandardContext.addFilterMap(StandardContext.java:2968) at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1207) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1294) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:855) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:345) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 7 more
同时,您最好的选择是使用Glassfish或JBoss AS,或者以<filter>
注册过滤器。
答案 1 :(得分:2)
您必须为Servlet过滤器指定目标。为'servletNames'或'urlPatterns'提供值。
http://docs.oracle.com/javaee/6/api/javax/servlet/annotation/WebFilter.html
e.g。
@WebFilter(filterName="mustBeSignedInFilter", urlPatterns={ "/signed/in/path/*" })
public class MustBeSignedInFilter implements Filter