本文采用的是1.4.0版本的shiro
官方中说的1.2之前,和之后的shiro配置分别为:
1.2之前:
<filter> <filter-name>iniShiroFilter</filter-name> <filter-class>org.apache.shiro.web.servlet.IniShiroFilter</filter-class> <init-param> <param-name>configPath</param-name> <param-value>classpath:shiro.ini</param-value> </init-param> </filter> <filter-mapping> <filter-name>iniShiroFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
1.2之后
<filter> <filter-name>iniShiroFilter</filter-name> <filter-class>org.apache.shiro.web.servlet.ShiroFilter</filter-class> <init-param> <param-name>configPath</param-name> <param-value>classpath:shiro.ini</param-value> </init-param> </filter> <filter-mapping> <filter-name>iniShiroFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
<listener> <listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class> </listener>
但是亲试之后发现,通过部署maven项目,在eclipse中部署1.4.0后,采用1.2之后的方式配置web.xml,会一直抛出找不到shiro.ini的错误
而在IDE中项目也无法发布到Tomcat之上,导致服务器启动失败。
苦恼之后,一不做二不休,采用1.2之前的方式配置,结果在eclipse,IDE上都可以正常运行。
贴web.xml源码
<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>shiro</display-name> <!--<listener> <listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class> 添加报错,无法运行 </listener>--> <filter> <filter-name>iniShiroFilter</filter-name> <filter-class>org.apache.shiro.web.servlet.IniShiroFilter</filter-class> <init-param> <param-name>configPath</param-name> <param-value>classpath:shiro.ini</param-value> </init-param> </filter> <filter-mapping> <filter-name>iniShiroFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
pom.xml源码
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.shiro</groupId> <artifactId>shiro</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>shiro Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.1.3</version> </dependency> <!--shiro 核心包--> <dependency> <groupId>org.apache.shiro</groupId> <artifactId>shiro-core</artifactId> <version>1.4.0</version> </dependency> <dependency> <groupId>org.apache.shiro</groupId> <artifactId>shiro-web</artifactId> <version>1.4.0</version> </dependency> <!-- shiro需要依赖servlet api --> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.25</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>0.2.23</version> </dependency> </dependencies> <build> <finalName>shiro</finalName> </build> </project>
最终究其根本 官方的1.2以后的配置是正确的,那么为什么在maven部署的web项目当中就不能允许呢?
我们可以看一下maven新建的web项目下配置的web.xml的头部声明
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" >
从这个声明可以看出,servlet和jsp的版本号是2.3,是一个非常老的版本,他的规范是 listener 需要在 filter之前, 并且el表达式默认是关闭的。
从而到导致shiro在加载listener的时候没有提前读取filter,从而找不到filter里面规定的shiro.ini,而导致web程序启动失败。
所以当修改servlet的版本声明为3.0以上的时候,就可以了。
web.xml中3.x servlet版本声明
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
改变声明之后,采用本文开始的1.2之后的shiro配置就可以运行了。