web项目整合shiro

• 构建1个web的meven项目

• 将DefinitionRealm、SecurityService、SecurityServiceImpl、EncodesUtil、DigestsUtil复制到项目中

• 导入依赖

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  <dependencies>
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.1.3</version>
    </dependency>
    <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-core</artifactId>
      <version>1.3.2</version>
    </dependency>
    <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-web</artifactId>
      <version>1.3.2</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <!-- tomcat7插件,命令： mvn tomcat7:run -DskipTests -->
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.2</version>
        <configuration>
          <uriEncoding>utf-8</uriEncoding>
          <port>8080</port>
          <path>/platform</path>
        </configuration>
      </plugin>
      <!-- compiler插件, 设定JDK版本 -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version>
        <configuration>
          <source>8</source>
          <target>8</target>
          <showWarnings>true</showWarnings>
        </configuration>
      </plugin>
    </plugins>
  </build>

• 配置web.xml

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<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"
         version="3.0">
  <display-name>shiro-day01-07web</display-name>

  <!-- 初始化SecurityManager对象所需要的环境-->
  <context-param>
    <param-name>shiroEnvironmentClass</param-name>
    <param-value>org.apache.shiro.web.env.IniWebEnvironment</param-value>
  </context-param>

  <!-- 指定Shiro的配置文件的位置 -->
  <context-param>
    <param-name>shiroConfigLocations</param-name>
    <param-value>classpath:shiro.ini</param-value>
  </context-param>

  <!-- 监听服务器启动时，创建shiro的web环境。
       即加载shiroEnvironmentClass变量指定的IniWebEnvironment类-->
  <listener>
    <listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class>
  </listener>

  <!-- shiro的l过滤入口，过滤一切请求 -->
  <filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>org.apache.shiro.web.servlet.ShiroFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>shiroFilter</filter-name>
    <!-- 过滤所有请求 -->
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

• Shiro内置了很多默认的过滤器，比如身份验证、授权等相关的。默认过滤器可以参考org.apache.shiro.web.filter.mgt.DefaultFilter中的枚举过滤器

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• 认证相关

过滤器	过滤器类	说明	默认
authc	FormAuthenticationFilter	基于表单的过滤器；如“/**=authc”，如果没有登录会跳到相应的登录页面登录	无
logout	LogoutFilter	退出过滤器，主要属性：redirectUrl：退出成功后重定向的地址，如“/logout=logout”	/
anon	AnonymousFilter	匿名过滤器，即不需要登录即可访问；一般用于静态资源过滤；示例“/static/**=anon”	无

• 授权相关

过滤器	过滤器类	说明	默认
roles	RolesAuthorizationFilter	角色授权拦截器，验证用户是否拥有所有角色；主要属性： loginUrl：登录页面地址（/login.jsp）；unauthorizedUrl：未授权后重定向的地址；示例“/admin/**=roles[admin]”	无
perms	PermissionsAuthorizationFilter	权限授权拦截器，验证用户是否拥有所有权限；属性和roles一样；示例“/user/**=perms["user:create"]”	无
port	PortFilter	端口拦截器，主要属性：port（80）：可以通过的端口；示例“/test= port[80]”，如果用户访问该页面是非80，将自动将请求端口改为80并重定向到该80端口，其他路径/参数等都一样	无
rest	HttpMethodPermissionFilter	rest风格拦截器，自动根据请求方法构建权限字符串（GET=read, POST=create,PUT=update,DELETE=delete,HEAD=read,TRACE=read,OPTIONS=read, MKCOL=create）构建权限字符串；示例“/users=rest[user]”，会自动拼出“user:read,user:create,user:update,user:delete”权限字符串进行权限匹配（所有都得匹配，isPermittedAll）	无
ssl	SslFilter	SSL拦截器，只有请求协议是https才能通过；否则自动跳转会https端口（443）；其他和port拦截器一样；	无

• 配置shiro.ini

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#声明自定义的realm，且为安全管理器指定realms
[main]
definitionRealm=com.itheima.shiro.realm.DefinitionRealm
securityManager.realms=$definitionRealm
#用户退出后跳转指定JSP页面
logout.redirectUrl=/login.jsp
#若没有登录，则被authc过滤器重定向到login.jsp页面
authc.loginUrl = /login.jsp
[urls]
/login=anon
#发送/home请求需要先登录
/home= authc
#发送/order/list请求需要先登录
/order-list = roles[admin]
#提交代码需要order:add权限
/order-add = perms["order:add"]
#更新代码需要order:del权限
/order-del = perms["order:del"]
#发送退出请求则用退出过滤器
/logout = logout

• 编写业务

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# 登录和退出登录接口
public interface LoginService {
    /**
     * @Description 登录方法
     * @param token 登录对象
     * @return
     */
    boolean login(UsernamePasswordToken token);
    /**
     * @Description 登出方法
     */
    void logout();
}

# 登录和退出登录实现
public class LoginServiceImpl implements LoginService {
    @Override
    public boolean login(UsernamePasswordToken token) {
        Subject subject = SecurityUtils.getSubject();
        try {
            subject.login(token);
        }catch (Exception e){
            return false;
        }
        return subject.isAuthenticated();
    }
    @Override
    public void logout() {
        Subject subject = SecurityUtils.getSubject();
        subject.logout();
    }
}

# 修改用户权限
public class SecurityServiceImpl implements SecurityService {
    @Override
    public Map<String,String> findPasswordByLoginName(String loginName) {
        return DigestsUtil.entryptPassword("123");
        return map;
    }
    @Override
    public List<String> findRoleByloginName(String loginName) {
        List<String> list = new ArrayList<>();
        if ("admin".equals(loginName)){
            list.add("admin");
        }
        list.add("dev");
        return list;
    }
    @Override
    public List<String>  findPermissionByloginName(String loginName) {
        List<String> list = new ArrayList<>();
        if ("jay".equals(loginName)){
            list.add("order:list");
            list.add("order:add");
            list.add("order:del");
        }
        return list;
    }
}

• 编写servlet

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@WebServlet(urlPatterns = "/login")
public class LoginServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        //获取输入的帐号密码
        String username = req.getParameter("loginName");
        String password = req.getParameter("password");
        //封装用户数据，成为Shiro能认识的token标识
        UsernamePasswordToken token = new UsernamePasswordToken(username, password);
        LoginService loginService = new LoginServiceImpl();
        //将封装用户信息的token进行验证
        boolean isLoginSuccess = loginService.login(token);
        if (!isLoginSuccess) {
            //重定向到未登录成功页面
            resp.sendRedirect("login.jsp");
            return;
        }
        req.getRequestDispatcher("/home").forward(req, resp);
    }

}

@WebServlet(urlPatterns = "/home")
public class HomeServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        req.getRequestDispatcher("home.jsp").forward(req, resp);
    }
}

@WebServlet(urlPatterns = "/order-add")
public class OrderAddServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        req.getRequestDispatcher("order-add.jsp").forward(req, resp);
    }

}

@WebServlet(urlPatterns = "/order-list")
public class OrderListServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        req.getRequestDispatcher("order-list.jsp").forward(req, resp);
    }
}

@WebServlet(urlPatterns = "/logout")
public class LogoutServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        LoginService loginService = new LoginServiceImpl();
        loginService.logout();
    }

}

• 编写jsp页面

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• 登录页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Title</title>
</head>
<body>
<form method="post" action="${pageContext.request.contextPath}/login">
    <table>
        <tr>
            <th>登陆名称</th>
            <td><input type="text"  name="loginName"></td>
        </tr>
        <tr>
            <th>密码</th>
            <td><input type="password" name="password"></td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="submit" value="提交"/>
            </td>
        </tr>
    </table>

</form>
</body>
</html>

• 首页

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title></title>
</head>
<body>
<h6>
    <a href="${pageContext.request.contextPath}/logout">退出</a>
    <a href="${pageContext.request.contextPath}/order-list">列表</a>
    <a href="${pageContext.request.contextPath}/order-add">添加</a>
</h6>
</body>
</html>

• 添加页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Title</title>
</head>
<body>
添加页面
</body>
</html>

• 列表页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%--导入jstl标签库--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>用户列表jsp页面</title>
    <style>
        table {border:1px solid #000000}
        table th{border:1px solid #000000}
        table td{border:1px solid #000000}
    </style>

</head>
<body>
<table cellpadding="0" cellspacing="0" width="80%">
    <tr>
        <th>编号</th>
        <th>公司名称</th>
        <th>信息来源</th>
        <th>所属行业</th>
        <th>级别</th>
        <th>联系地址</th>
        <th>联系电话</th>
    </tr>
    <tr>
        <td>1</td>
        <td>传智播客</td>
        <td>网络营销</td>
        <td>互联网</td>
        <td>普通客户</td>
        <td>津安创意园</td>
        <td>0208888887</td>
    </tr>
    <tr>
        <td>2</td>
        <td>黑马程序员</td>
        <td>j2ee</td>
        <td>互联网</td>
        <td>VIP客户</td>
        <td>津安创意园</td>
        <td>0208888887</td>
    </tr>
    <tr>
        <td>3</td>
        <td>黑马程序员</td>
        <td>大数据</td>
        <td>互联网</td>
        <td>VIP客户</td>
        <td>津安创意园</td>
        <td>0208888887</td>
    </tr>
</table>
</body>

</html>

• 测试

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• 启动项目
  

• 访问http://localhost:8080/platform/home，如果没有登录会跳转到登录页面

• 登录用户名和密码

admin:123
jay:123

• 使用admin用户测试，可以查看列表，但没有添加权限
  

• 使用jay用户测试，拥有添加权限，但不能查看列表