从实例入手学习Shiro与Web的整合

忘是亡心i 2023-10-18 18:29 25阅读 0赞

## 场景 ##

Shiro官网关于Web整合文档：

[http://shiro.apache.org/web.html\#Web-configuration][http_shiro.apache.org_web.html_Web-configuration]

W3Cschool Shiro Web集成：

[https://www.w3cschool.cn/shiro/c52r1iff.html][https_www.w3cschool.cn_shiro_c52r1iff.html]

## 实现 ##

### 项目搭建 ###

1.打开Ecllipse-新建Maven项目--选择Webapp

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

2.输入项目信息

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3.项目建成后默认是1.5，是没有src/main/java目录的。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

4.右键项目-Properties--Java Build Path Libraties--将原来的remove掉。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3][]

5.然后再点击Add Library ..-JRE System Library

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6.选择自己默认的，这里是1.8

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 5][]

7.修改完之后。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 6][]

8.建成之后项目没有META-INF目录，这里新建一个Dynamic Web Project 将META-INF复制过来，

并且web.xml的结构也不是我们想要的，将其也复制过来。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 7][]

9.复制过来可以将原来新建的删掉，将复制过来的web.xml中的display-name进行修改。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 8][]

10.打开pom.xml添加依赖

<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.badao.shiro</groupId>
      <artifactId>ShiroWeb</artifactId>
      <packaging>war</packaging>
      <version>0.0.1-SNAPSHOT</version>
      <name>ShiroWeb 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>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
     </dependency>
     
     <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.3.1</version>
     </dependency>
     
     
     <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
     </dependency>
     
     
        <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
     </dependency>
       
       
        <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
     </dependency>
     
     
        <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-core</artifactId>
      <version>1.2.4</version>
     </dependency>
       
        <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-web</artifactId>
      <version>1.2.4</version>
     </dependency>
       
        <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.12</version>
     </dependency>
       
      </dependencies>
      <build>
        <finalName>ShiroWeb</finalName>
      </build>
    </project>

11.修改Index.jsp,添加Hello Shiro，然后部署运行项目。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 9][]

### 配置项目 ###

1.打开web.xml

<listener>
         <listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class>
      </listener>
      
     
     <filter>
         <filter-name>ShiroFilter</filter-name>
         <filter-class>org.apache.shiro.web.servlet.ShiroFilter</filter-class>
         <init-param>
          <param-name>configPath</param-name>
          <param-value>/WEB-INF/shiro.ini</param-value>
         </init-param>
     </filter>
     
     <filter-mapping>
         <filter-name>ShiroFilter</filter-name>
         <url-pattern>/*</url-pattern>
     </filter-mapping>

注：

通过 configPath 指定 ini 配置文件位置，默认是先从 /WEB-INF/shiro.ini 加载，如果没有就默认加载 classpath:shiro.ini，即默认相对于 web 应用上下文根路径；

2.在WEB-INF下新建shiro.ini配置文件。

[main]
    authc.loginUrl=/login
    roles.unauthorizedUrl=/unauthorized.jsp
    perms.unauthorizedUrl=/unauthorized.jsp
    
    [users]
    badao=123,admin
    liumang=123,teacher
    qizhi=123
    
    [roles]
    admin=user:*
    teacher=student:*
    
    [urls]
    /login=anon
    /admin=authc
    /student=roles[teacher]
    /teacher=perms["user:create"]

然后配置用户、角色、权限等。

注：

[main]
    authc.loginUrl=/login
    roles.unauthorizedUrl=/unauthorized.jsp
    perms.unauthorizedUrl=/unauthorized.jsp

以上表示：

authc.loginUrl=/login 验证不通过时的跳转url

roles.unauthorizedUrl=/unauthorized.jsp 角色验证不通过时的跳转页面

perms.unauthorizedUrl=/unauthorized.jsp 权限验证不通过时的跳转页面

[users]
    badao=123,admin
    liumang=123,teacher
    qizhi=123

以上表示有三个用户：

badao用户密码为123，拥有admin角色。

liumang用户密码为123，拥有teacher角色。

qizhi用户密码为123,没有角色。

[roles]
    admin=user:*
    teacher=student:*

以上表示admin角色拥有对uset的所有权限。

teacher角色拥有对student的所有权限。

[urls]
    /login=anon
    /admin=authc
    /student=roles[teacher]
    /teacher=perms["user:create"]

以上表示：

访问/login时不进行限制。具体参照官方API

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 10][]

访问/admin时需要进行验证，如果没有，则通过请求重定向到loginurl配置(authc.loginUrl=/login)体参照官方API

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 11][]

/student=roles[teacher]

表示拥有teacher角色的才能访问/student url

/teacher=perms["user:create"]

表示拥有对user有create权限的才能访问/teacher的url

其他配置具体参照官方文档。

### 编写业务代码 ###

1.编写登录的servlet以及主页的servlet并在web.xml中配置

新建LoginServlet

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 12][]

代码：

package com.badao.servlet;
    
    import java.io.IOException;
    
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.shiro.SecurityUtils;
    import org.apache.shiro.authc.UsernamePasswordToken;
    import org.apache.shiro.subject.Subject;
    
    
    public class LoginServlet extends HttpServlet{
    
     /**
      *
      */
     private static final long serialVersionUID = 1L;
    
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
      // TODO Auto-generated method stub
      System.out.println("login doget");
      req.getRequestDispatcher("login.jsp").forward(req, resp);
     }
    
     @Override
     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
      System.out.println("login dopost");
      String userName=req.getParameter("userName");
      String password=req.getParameter("password");
      Subject subject=SecurityUtils.getSubject();
      UsernamePasswordToken token=new UsernamePasswordToken(userName, password);
      try{
       subject.login(token); 
       resp.sendRedirect("success.jsp");
      }catch(Exception e){
       e.printStackTrace();
       req.setAttribute("errorInfo", "用户名或者密码错误");
       req.getRequestDispatcher("login.jsp").forward(req, resp);
      }
     }
    
    
    }

打开web.xml，添加：

<servlet>
      <servlet-name>loginServlet</servlet-name>
      <servlet-class>com.badao.servlet.LoginServlet</servlet-class>
     </servlet>
     
     <servlet-mapping>
      <servlet-name>loginServlet</servlet-name>
      <url-pattern>/login</url-pattern>
     </servlet-mapping>

2.新建login.jsp,body中添加：

<form action="login" method="post">
     userName:<input type="text" name="userName"/><br/>
     password:<input type="password" name="password"/><br/>
     <input type="submit" value="登录"/>
    </form>

3.新建success.jsp,body中添加：

登录成功，欢迎你!

4.新建unauthorized.jsp,body中添加：

认证未通过，或者权限不足

5.新建AdminServlet用于权限验证测试。

package com.badao.servlet;
    
    import java.io.IOException;
    
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    public class AdminServlet extends HttpServlet{
    
     private static final long serialVersionUID = 1L;
    
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
      System.out.println("admin do get");
     }
    
     @Override
     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
      System.out.println("admin do post");
     }
    
    }

6.打开web.xml，添加：

<servlet>
      <servlet-name>adminServlet</servlet-name>
      <servlet-class>com.badao.servlet.AdminServlet</servlet-class>
     </servlet>
     
     <servlet-mapping>
      <servlet-name>adminServlet</servlet-name>
      <url-pattern>/admin</url-pattern>
     </servlet-mapping>

#### 完整web.xml代码 ####

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
      <display-name>ShiroWeb</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>
       <listener>
         <listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class>
      </listener>
      
     
     <filter>
         <filter-name>ShiroFilter</filter-name>
         <filter-class>org.apache.shiro.web.servlet.ShiroFilter</filter-class>
         <init-param>
          <param-name>configPath</param-name>
          <param-value>/WEB-INF/shiro.ini</param-value>
         </init-param>
     </filter>
     
     <filter-mapping>
         <filter-name>ShiroFilter</filter-name>
         <url-pattern>/*</url-pattern>
     </filter-mapping>
     
     
     <servlet>
      <servlet-name>loginServlet</servlet-name>
      <servlet-class>com.badao.servlet.LoginServlet</servlet-class>
     </servlet>
     
     <servlet-mapping>
      <servlet-name>loginServlet</servlet-name>
      <url-pattern>/login</url-pattern>
     </servlet-mapping>
     
     <servlet>
      <servlet-name>adminServlet</servlet-name>
      <servlet-class>com.badao.servlet.AdminServlet</servlet-class>
     </servlet>
     
     <servlet-mapping>
      <servlet-name>adminServlet</servlet-name>
      <url-pattern>/admin</url-pattern>
     </servlet-mapping>
     
    </web-app>

### 项目结构目录 ###

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 13][]

### 运行效果 ###

不登录直接访问admin

![Image 1][]![2019051215181798.gif][]

登录成功

![Image 1][]![20190512151826818.gif][]

登录后访问admin

![Image 1][]![20190512151832127.gif][]

使用admin角色的badao用户访问/student

![Image 1][]![20190512151838153.gif][]

使用teacher角色的liumang用户访问/teacher

![Image 1][]![20190512151841607.gif][]

### 项目源码 ###

[https://download.csdn.net/download/badao\_liumang\_qizhi/11173797][https_download.csdn.net_download_badao_liumang_qizhi_11173797]

[http_shiro.apache.org_web.html_Web-configuration]: http://shiro.apache.org/web.html#Web-configuration
[https_www.w3cschool.cn_shiro_c52r1iff.html]: https://www.w3cschool.cn/shiro/c52r1iff.html
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[https_download.csdn.net_download_badao_liumang_qizhi_11173797]: https://download.csdn.net/download/badao_liumang_qizhi/11173797