cas4.0 单点登录 之 cas-client
cas4.0 单点登录 之 https证书 已经做好了证书的准备工作。如今结合cas-server来配置单点登录；
一、安装cas服务端（cas-server)
cas服务端是一个war包，这里仅仅做体验单点登录，cas-server下载点这里cas-server-webapp-4.0.0.war，将war包放tomcat下执行就可以，执行cas-server的tomcat的要开启SSL支持，上面文章也有说明。server.xml须要例如以下配置：
<Connector port="8443" protocol="HTTP/1.1"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" keystoreFile="d:/cas/keystore" keystorePass="caspass"/>cas-server的定制开发后面文章再讲。
二、cas客户端配置（cas-client）
1、web.xml方式配置
写了个简单客户端配置，源代码cas_client_test_demo.zip
a) pom.xml
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.jasig.cas.client</groupId>
<artifactId>cas-client-core</artifactId>
<version>3.4.1</version>
</dependency>
</dependencies>
b) web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0"
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">
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- ****************** 单点登录開始 ********************-->
<!-- 用于实现单点登出功能 可选 -->
<listener>
<listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
</listener>
<!-- 该过滤器用于实现单点登出功能。单点退出配置。一定要放在其它filter之前 可选 -->
<filter>
<filter-name>CAS Single Sign Out Filter</filter-name>
<filter-class>org.jasig.cas.client.session.SingleSignOutFilter</filter-class>
<init-param>
<param-name>casServerUrlPrefix</param-name>
<param-value>https://cas.castest.com:8443/cas/</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CAS Single Sign Out Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 该过滤器负责用户的认证工作。必须 -->
<filter>
<filter-name>CASFilter</filter-name>
<filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
<init-param>
<!--casServerLoginUrl:cas服务的登陆url -->
<param-name>casServerLoginUrl</param-name>
<param-value>https://cas.castest.com:8443/cas/login</param-value>
</init-param>
<init-param>
<!--serverName:本项目的ip+port -->
<param-name>serverName</param-name>
<param-value>http://www.zrk1000.com:8081</param-value>
</init-param>
<init-param>
<param-name>useSession</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>redirectAfterValidation</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CASFilter</filter-name>
<url-pattern>/test</url-pattern>
</filter-mapping>
<!-- 该过滤器负责对Ticket的校验工作，必须-->
<filter>
<filter-name>CAS Validation Filter</filter-name>
<filter-class>
org.jasig.cas.client.validation.Cas20ProxyReceivingTicketValidationFilter
</filter-class>
<init-param>
<param-name>casServerUrlPrefix</param-name>
<param-value>https://cas.castest.com:8443/cas/</param-value>
</init-param>
<init-param>
<param-name>serverName</param-name>
<param-value>http://www.zrk1000.com:8081</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CAS Validation Filter</filter-name>
<!-- 对test做登录拦截-->
<url-pattern>/test</url-pattern>
</filter-mapping>
<!-- 该过滤器对HttpServletRequest请求包装， 可通过HttpServletRequest的getRemoteUser()方法获得登录用户的登录名，可选 -->
<filter>
<filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
<filter-class>
org.jasig.cas.client.util.HttpServletRequestWrapperFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 该过滤器使得能够通过org.jasig.cas.client.util.AssertionHolder来获取用户的登录名。
比方AssertionHolder.getAssertion().getPrincipal().getName()。
这个类把Assertion信息放在ThreadLocal变量中。这样应用程序不在web层也能够获取到当前登录信息 -->
<filter>
<filter-name>CAS Assertion Thread Local Filter</filter-name>
<filter-class>org.jasig.cas.client.util.AssertionThreadLocalFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CAS Assertion Thread Local Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- ****************** 单点登录结束 ********************-->
</web-app>**注意：casServerLoginUrl和casServerUrlPrefix必须使用域名，且域名要和证书中的“名字与姓氏”全然同样。没有域名的能够配置本地hosts做映射
我的hosts配置是这样：
这里用的一台机器。两个域名均指向了本机，有域名的童鞋及土豪无视
c) spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
">
<mvc:annotation-driven />
<context:component-scan base-package="com.castest.*" />
</beans>d) 測试Controller
package com.castest.cas;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class IndexController {
@RequestMapping("/test")
@ResponseBody
public String index(HttpServletRequest request, HttpServletResponse response) {
String result = "execute test method</br>";
result += "sessionId : "+request.getSession().getId() +"</br>";
result += "request.getRemoteUser() : " + request.getRemoteUser() +"</br>";
result += "request.getUserPrincipal() : " + request.getUserPrincipal() +"</br>";
return result;
}
@RequestMapping(value={"/","/index"})
@ResponseBody
public String error(HttpServletRequest request, HttpServletResponse response) {
String result = "execute index method</br>";
result += "sessionId : "+request.getSession().getId() +"</br>";
result += "request.getRemoteUser() : " + request.getRemoteUser() +"</br>";
result += "request.getUserPrincipal() : " + request.getUserPrincipal() +"</br>";
return result;
}
}
e) 測试结果
1、
请求：http://www.zrk1000.com:8081/cas_client/index
结果：web.xml中仅仅对/test做登陆拦截。/index未跳转登陆正常
2、
请求：http://www.zrk1000.com:8081/cas_client/test
–> https://cas.castest.com:8443/cas/login?service=http%3A%2F%2Fwww.zrk1000.com%3A8081%2Fcas_client%2Ftest
被拦截重定向到了cas-server的默认登陆页面。server參数为原请求URL。认证成功后会重定向到此地址。
cas默认username为：casuser 默认password：Mellon (cas-server的WEB-INF/deployerConfigContext.xml中)
–>http://www.zrk1000.com:8081/cas_client/test
结果：web.xml中仅仅对/test做登陆拦截。/index不跳转；登陆正常。而且登陆成功后获取到了用户信息
2、基于spring boot配置
使用spring boot创建web项目没有web.xml。仅仅能使用java代码的方式加入filter和listener。原理和web.xml一样。这里做了简单的配置。
github上源代码：https://github.com/zrk1000/cas_client_boot，https://github.com/zrk1000/cas_client_boot_demo
或者源代码压缩包：cas_client_boot_test_demo.zip
当中cas_client_boot_demo.war依赖cas_client_boot.jar。
使用spring boot的项目cas这样配置：
spring.mvc.view.prefix=/WEB-INF/page
spring.mvc.view.suffix=.jsp
server.session.cookie.domain=.castest.com
server.session.cookie.path=/
server.port=8081
spring.cas.sign-out-filters=/*
spring.cas.auth-filters=/test
spring.cas.validate-filters=/test
spring.cas.request-wrapper-filters=/*
spring.cas.assertion-filters=/*
spring.cas.cas-server-login-url=https://cas.castest.com:8443/cas/login
spring.cas.cas-server-url-prefix=https://cas.castest.com:8443/cas/
spring.cas.redirect-after-validation=true
spring.cas.use-session=true
spring.cas.server-name=http://www.zrk1000.com:80813 常见错误
1、javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No name matching cas.castest.com found
原因:cas客户端使用的证书库中未找到对应的域名，也就是说客户端JDK导入的证书的域名与客户端訪问的cas-server域名不同
解决:检查JDK证书库中证书域名是否和cas-server的域名同样。保持一致就可以
2、javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
原因:证书未导入等原因
解决:往jdk导入证书。使用IDE的小伙伴也要检查工具使用的jdk是否和你导入证书的jdk是同一个