2.CAS服务端数据源设置

2.1需求分析

我们现在让用户名密码从我们的优乐选的user表里做验证

2.2配置数据源

（1）修改cas服务端中web-inf下deployerConfigContext.xml，添加如下配置

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"

              p:driverClass="com.mysql.jdbc.Driver"

              p:jdbcUrl="jdbc:mysql://127.0.0.1:3306/youlexuandb?characterEncoding=utf8"

              p:user="root"

              p:password="root" />

<bean id="passwordEncoder"

class="org.jasig.cas.authentication.handler.DefaultPasswordEncoder"

        c:encodingAlgorithm="MD5"

        p:characterEncoding="UTF-8" />

<bean id="dbAuthHandler"

          class="org.jasig.cas.adaptors.jdbc.QueryDatabaseAuthenticationHandler"

          p:dataSource-ref="dataSource"

          p:sql="select password from tb_user where username = ?"

          p:passwordEncoder-ref="passwordEncoder"/>

然后在配置文件开始部分找到如下配置

<bean id="authenticationManager" class="org.jasig.cas.authentication.PolicyBasedAuthenticationManager">

        <constructor-arg>

            <map>

                <entry key-ref="proxyAuthenticationHandler" value-ref="proxyPrincipalResolver" />

                <!--<entry key-ref="primaryAuthenticationHandler" value-ref="primaryPrincipalResolver" />-->
　　　　　　　　
　　　　　　　　　　<entry key-ref="dbAuthHandler" value-ref="primaryPrincipalResolver"/>

            </map>

        </constructor-arg>

        <property name="authenticationPolicy">

            <bean class="org.jasig.cas.authentication.AnyAuthenticationPolicy" />

        </property>

</bean>

其中

<entry key-ref="primaryAuthenticationHandler" value-ref="primaryPrincipalResolver" />

一句是使用固定的用户名和密码，我们在下面可以看到这两个bean ,如果我们使用数据库认证用户名和密码，需要将这句注释掉。

添加下面这一句配置

<entry key-ref="dbAuthHandler" value-ref="primaryPrincipalResolver"/>

（2）将以下三个jar包放入webapps\cas\WEB-INF\lib下

（这三个jar包在资源\cas\jar目录下）

用数据库中的用户名和密码进行测试

启动tomcat

Demo1

Demo2

3.CAS服务端界面改造

3.1需求分析

我们现在动手将CAS默认的登录页更改为自己的优乐选登陆页

3.2改头换面

3.2.1拷贝资源

（1）将登陆页login.html拷贝到cas系统下WEB-INF\view\jsp\default\ui 目录下

（2）将css、js等文件夹拷贝到cas目录下

（3） 将tomcat7\webapps\cas\WEB-INF\view\jsp\default\ui下的casLoginView.jsp 改名（可以为之后的修改操作做参照），将login.html改名为casLoginView.jsp

3.2.2修改页面

编辑casLoginView.jsp 内容

（1）添加指令-----若为原登录页为html文件，则需要添加

<%@ page pageEncoding="UTF-8" %>

<%@ page contentType="text/html; charset=UTF-8" %>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>

<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>

（2）修改form标签

<form:form method="post" id="fm1" commandName="${commandName}" htmlEscape="true" class="sui-form">

......

</form:form>

（3）修改用户名框

<form:input id="username" tabindex="1"

    accesskey="${userNameAccessKey}" path="username" autocomplete="off" htmlEscape="true"

    placeholder="邮箱/用户名/手机号" class="span2 input-xfat" />

（4）修改密码框

 <form:password  id="password" tabindex="2" path="password"

      accesskey="${passwordAccessKey}" htmlEscape="true" autocomplete="off"

      placeholder="请输入密码" class="span2 input-xfat"   />

（5）修改登陆按钮

<input type="hidden" name="lt" value="${loginTicket}" />

<input type="hidden" name="execution" value="${flowExecutionKey}" />

<input type="hidden" name="_eventId" value="submit" />

<input class="sui-btn btn-block btn-xlarge btn-danger" accesskey="l" value="登陆" type="submit" />

整体代码如下

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>

<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

    <meta charset="UTF-8">

    <meta http-equiv="X-UA-Compatible" content="IE=9; IE=8; IE=7; IE=EDGE">

    <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />

    <title>优乐选，欢迎登录</title>

    <link rel="stylesheet" type="text/css" href="css/webbase.css" />

    <link rel="stylesheet" type="text/css" href="css/pages-login.css" />

</head>

<body>

    <div class="login-box">

        <!--head-->

        <div class="py-container logoArea">

            <a href="" class="logo"></a>

        </div>

        <!--loginArea-->

        <div class="loginArea">

            <div class="py-container login">

                <div class="loginform">

                    <ul class="sui-nav nav-tabs tab-wraped">

                        <li>

                            <a href="#index" data-toggle="tab">

                                <h3>扫描登录</h3>

                            </a>

                        </li>

                        <li class="active">

                            <a href="#profile" data-toggle="tab">

                                <h3>账户登录</h3>

                            </a>

                        </li>

                    </ul>

                    <div class="tab-content tab-wraped">

                        <div id="index" class="tab-pane">

                            <p>二维码登录，暂为官网二维码</p>

                            <img src="img/xg/erweima.png" />

                        </div>

                        <div id="profile" class="tab-pane  active">

                            <form:form method="post" id="fm1" commandName="${commandName}" htmlEscape="true" class="sui-form">

                                <div class="input-prepend"><span class="add-on loginname"></span>

                                    <form:input id="username" tabindex="1"

                                    accesskey="${userNameAccessKey}" path="username" autocomplete="off" htmlEscape="true"

                                    placeholder="邮箱/用户名/手机号" class="span2 input-xfat" />

                                </div>

                                <div class="input-prepend"><span class="add-on loginpwd"></span>

                                     <form:password  id="password" tabindex="2" path="password"

                                      accesskey="${passwordAccessKey}" htmlEscape="true" autocomplete="off"

                                      placeholder="请输入密码" class="span2 input-xfat"   />

                                </div>

                                <div class="setting">

                                    <label class="checkbox inline">

          <input name="m1" type="checkbox" value="2" checked="">

          自动登录

        </label>

                                    <span class="forget">忘记密码？</span>

                                </div>

                                <div class="logined">

                                    <input type="hidden" name="lt" value="${loginTicket}" />

                                    <input type="hidden" name="execution" value="${flowExecutionKey}" />

                                    <input type="hidden" name="_eventId" value="submit" />

                                    <input class="sui-btn btn-block btn-xlarge btn-danger" accesskey="l" value="登陆" type="submit" />

                                </div>

                            </form:form>

                            <div class="otherlogin">

                                <div class="types">

                                    <ul>

                                        <li><img src="img/qq.png" width="35px" height="35px" /></li>

                                        <li><img src="img/sina.png" /></li>

                                        <li><img src="img/ali.png" /></li>

                                        <li><img src="img/weixin.png" /></li>

                                    </ul>

                                </div>

                                <span class="register"><a href="register.html" target="_blank">立即注册</a></span>

                            </div>

                        </div>

                    </div>

                </div>

            </div>

        </div>

        <!--foot-->

        <div class="py-container copyright">

            <ul>

                <li>关于我们</li>

                <li>联系我们</li>

                <li>联系客服</li>

                <li>商家入驻</li>

                <li>营销中心</li>

                <li>手机优乐选</li>

                <li>销售联盟</li>

                <li>优乐选社区</li>

            </ul>

            <div class="address">地址：XXX</div>

            <div class="beian">XXX</div>

        </div>

    </div>

<script type="text/javascript" src="js/plugins/jquery/jquery.min.js"></script>

<script type="text/javascript" src="js/plugins/jquery.easing/jquery.easing.min.js"></script>

<script type="text/javascript" src="js/plugins/sui/sui.min.js"></script>

<script type="text/javascript" src="js/plugins/jquery-placeholder/jquery.placeholder.min.js"></script>

<script type="text/javascript" src="js/pages/login.js"></script>

</body>

</html>

3.3错误提示(选做 国际化内容)

在表单内加入错误提示框

<form:errors path="*" id="msg" cssClass="errors" element="div" htmlEscape="false" />

测试：输入错误的用户名和密码，提示是英文。这个提示信息是在WEB-INF\classes目录下的messages.properties文件中

authenticationFailure.AccountNotFoundException=Invalid credentials.

authenticationFailure.FailedLoginException=Invalid credentials.

设置国际化为zn_CN  ,修改cas-servlet.xml

<bean id="localeResolver" class="org.springframework.web.servlet.i18n.CookieLocaleResolver" p:defaultLocale="zh_CN" />

我们需要将此信息拷贝到messages_zh_CN.properties下，并改为中文提示（转码）

authenticationFailure.AccountNotFoundException=\u7528\u6237\u4E0D\u5B58\u5728.

authenticationFailure.FailedLoginException=\u5BC6\u7801\u9519\u8BEF.

第一个是用户名不存在时的错误提示

第二个是密码错误的提示

4. CAS客户端与SpringSecurity集成

4.1 Spring Security测试工程搭建

（1）建立Maven项目casclient_demo3 ，引入spring依赖和spring secrity 相关依赖 ，tomcat端口设置为9003

pom.xml约束文件

<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/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.luli.demo</groupId>

    <artifactId>casclient_demo3</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>war</packaging>

    <properties>

        <spring.version>4.2.4.RELEASE</spring.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context-support</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-test</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>servlet-api</artifactId>

            <version>2.5</version>

            <scope>provided</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.security</groupId>

            <artifactId>spring-security-web</artifactId>

            <version>4.1.0.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.springframework.security</groupId>

            <artifactId>spring-security-config</artifactId>

            <version>4.1.0.RELEASE</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <!-- java编译插件 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>3.2</version>

                <configuration>

                    <source>1.7</source>

                    <target>1.7</target>

                    <encoding>UTF-8</encoding>

                </configuration>

            </plugin>

            <plugin>

                <groupId>org.apache.tomcat.maven</groupId>

                <artifactId>tomcat7-maven-plugin</artifactId>

                <configuration>

                    <!-- 指定端口 -->

                    <port>9003</port>

                    <!-- 请求路径 -->

                    <path>/</path>

                </configuration>

            </plugin>

        </plugins>

    </build>

</project>

（2）建立web.xml ,添加过滤器等配置

<?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"

    version="2.5">    

       <context-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath:spring-security.xml</param-value>

     </context-param>

     <listener>

        <listener-class>

            org.springframework.web.context.ContextLoaderListener

        </listener-class>

     </listener>

     <filter>

        <filter-name>springSecurityFilterChain</filter-name>

        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>

     </filter>

     <filter-mapping>

        <filter-name>springSecurityFilterChain</filter-name>

        <url-pattern>/*</url-pattern>

     </filter-mapping>

    <servlet>

    <servlet-name>springmvc</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!-- 指定加载的配置文件 ，通过参数 contextConfigLocation 加载-->

        <init-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath:springmvc.xml</param-value>

        </init-param>

    </servlet>

    <servlet-mapping>

        <servlet-name>springmvc</servlet-name>

        <url-pattern>*.do</url-pattern>

    </servlet-mapping>

</web-app>

（3）创建配置文件spring-security.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans:beans xmlns="http://www.springframework.org/schema/security"

    xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security.xsd">

    <!-- 设置页面不登陆也可以访问 -->

    <http pattern="/login.html" security="none"></http>

    <http pattern="/login_error.html" security="none"></http>

    <!-- 页面的拦截规则    use-expressions:是否启动SPEL表达式 默认是true -->

    <http use-expressions="false">

        <!-- 当前用户必须有ROLE_USER的角色 才可以访问根目录及所属子目录的资源 -->

        <intercept-url pattern="/**" access="ROLE_USER"/>

        <!-- 开启表单登陆功能 -->

        <form-login   login-page="/login.html" default-target-url="/index.html" authentication-failure-url="/login_error.html"/>

        <csrf disabled="true"/>

    </http>

    <!-- 认证管理器 -->

    <authentication-manager>

        <authentication-provider>

            <user-service>

                <user name="admin" password="123456" authorities="ROLE_USER"/>

            </user-service>

        </authentication-provider>

    </authentication-manager>

</beans:beans>

（4）添加html页面

4.2 Spring Security与 CAS集成

（1）引入依赖pom.xml

<dependency>

       <groupId>org.springframework.security</groupId>

       <artifactId>spring-security-cas</artifactId>

       <version>4.1.0.RELEASE</version>

</dependency>

<dependency>

        <groupId>org.jasig.cas.client</groupId>

        <artifactId>cas-client-core</artifactId>

        <version>3.3.3</version>

        <exclusions>

            <exclusion>

                <groupId>org.slf4j</groupId>

                <artifactId>log4j-over-slf4j</artifactId>

            </exclusion>

        </exclusions>

</dependency>

（2）修改spring-security.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans:beans xmlns="http://www.springframework.org/schema/security"

    xmlns:beans="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans.xsd

                        http://www.springframework.org/schema/security

                        http://www.springframework.org/schema/security/spring-security.xsd">

    <!-- entry-point-ref 入口点引用 -->

    <http use-expressions="false" entry-point-ref="casProcessingFilterEntryPoint">

        <intercept-url pattern="/**" access="ROLE_USER" />

        <csrf disabled="true" />

        <!-- custom-filter为过滤器， position 表示将过滤器放在指定的位置上，before表示放在指定位置之前 ，after表示放在指定的位置之后 -->

        <custom-filter ref="casAuthenticationFilter" position="CAS_FILTER" />

        <custom-filter ref="requestSingleLogoutFilter" before="LOGOUT_FILTER" />

        <custom-filter ref="singleLogoutFilter" before="CAS_FILTER" />

    </http>

    <!-- CAS入口点 开始 -->

    <beans:bean id="casProcessingFilterEntryPoint"

        class="org.springframework.security.cas.web.CasAuthenticationEntryPoint">

        <!-- 单点登录服务器登录URL -->

        <beans:property name="loginUrl" value="http://localhost:9100/cas/login" />

        <beans:property name="serviceProperties" ref="serviceProperties" />

    </beans:bean>

    <beans:bean id="serviceProperties"

        class="org.springframework.security.cas.ServiceProperties">

        <!--service 配置自身工程的根地址+/login/cas -->

        <beans:property name="service" value="http://localhost:9003/login/cas" />

    </beans:bean>

    <!-- CAS入口点 结束 -->

    <!-- 认证过滤器 开始 -->

    <beans:bean id="casAuthenticationFilter"

        class="org.springframework.security.cas.web.CasAuthenticationFilter">

        <beans:property name="authenticationManager" ref="authenticationManager" />

    </beans:bean>

    <!-- 认证管理器 -->

    <authentication-manager alias="authenticationManager">

        <authentication-provider ref="casAuthenticationProvider">

        </authentication-provider>

    </authentication-manager>

    <!-- 认证提供者 -->

    <beans:bean id="casAuthenticationProvider"

        class="org.springframework.security.cas.authentication.CasAuthenticationProvider">

        <beans:property name="authenticationUserDetailsService">

            <beans:bean

                class="org.springframework.security.core.userdetails.UserDetailsByNameServiceWrapper">

                <beans:constructor-arg ref="userDetailsService" />

            </beans:bean>

        </beans:property>

        <beans:property name="serviceProperties" ref="serviceProperties" />

        <!-- ticketValidator 为票据验证器 -->

        <beans:property name="ticketValidator">

            <beans:bean

                class="org.jasig.cas.client.validation.Cas20ServiceTicketValidator">

                <beans:constructor-arg index="0"

                    value="http://localhost:9100/cas" />

            </beans:bean>

        </beans:property>

        <beans:property name="key"

            value="an_id_for_this_auth_provider_only" />

    </beans:bean>

    <!-- 认证类 -->

    <beans:bean id="userDetailsService"

        class="com.offcn.demo.service.UserDetailServiceImpl" />

    <!-- 认证过滤器 结束 -->

    <!-- 单点登出 开始 -->

    <beans:bean id="singleLogoutFilter"

        class="org.jasig.cas.client.session.SingleSignOutFilter" />

    <beans:bean id="requestSingleLogoutFilter"

        class="org.springframework.security.web.authentication.logout.LogoutFilter">

        <beans:constructor-arg

            value="http://localhost:9100/cas/logout?service=http://localhost:9003/index2.html" />

        <beans:constructor-arg>

            <beans:bean

                class="org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler" />

        </beans:constructor-arg>

        <beans:property name="filterProcessesUrl" value="/logout/cas" />

    </beans:bean>

    <!-- 单点登出 结束 -->

</beans:beans>

（3）创建UserDetailsServiceImpl

/**

 * 认证类

 */

public class UserDetailServiceImpl implements UserDetailsService {

    @Override

    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        //构建角色集合

        List<GrantedAuthority> authorities=new ArrayList();

        authorities.add(new SimpleGrantedAuthority("ROLE_USER"));

        return new User(username, ""  , authorities);

    }

}

这个类的主要作用是在登陆后得到用户名，可以根据用户名查询角色或执行一些逻辑。

启动tomcat

启动9003 进行登录

再访问9001 和 9002 发现不再需要登录，可以直接进行登录实现单点登录功能。

4.3获取登录名

我们在处理后端逻辑需要获得登录名，那么如何获取单点登录的用户名呢? 其实和我们之前获得用户名的方式是完全相同的，我们下面来做个测试。

（1）web.xml 添加springmvc

  <servlet>

      <servlet-name>springmvc</servlet-name>

      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

      <!-- 指定加载的配置文件 ，通过参数contextConfigLocation加载-->

      <init-param>

          <param-name>contextConfigLocation</param-name>

          <param-value>classpath:springmvc.xml</param-value>

      </init-param>

  </servlet>

  <servlet-mapping>

      <servlet-name>springmvc</servlet-name>

      <url-pattern>*.do</url-pattern>

  </servlet-mapping>

（2）创建springmvc.xml

    <?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd

        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.offcn.demo" />

    <mvc:annotation-driven />

</beans>

（3）创建UserController

@RestController

public class UserController {

    @RequestMapping("/findLoginUser")

    public void  findLoginUser(){

        String name = SecurityContextHolder.getContext().getAuthentication().getName();

        System.out.println(name);

    }

}

先登录9003

地址栏输入http://localhost:9003/findLoginUser.do 即可在控制台看到输出的登录名。

4.4退出登录

修改spring-security.xml

<beans:bean id="requestSingleLogoutFilter" class="org.springframework.security.web.authentication.logout.LogoutFilter">

        <beans:constructor-arg value="http://localhost:9100/cas/logout?service=http://localhost:9003/index2.html"/>

        <beans:constructor-arg>

            <beans:bean class="org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler"/>

        </beans:constructor-arg>

        <beans:property name="filterProcessesUrl" value="/logout/cas"/>

</beans:bean>

在页面上添加链接

<a href="/logout/cas">退出登录</a>

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