基于springboot,整合了casclient的java web项目demo

---

目的

当需要建立javaweb项目时可以直接拿来用

主要类及作用

cas 分为服务端，与客户端，那么客户端如何与服务端进行交互呢，或者说服务端发送的response报文客户端如何接收呢？ 这就要用到配置。cas client通过filter拦截与cas服务器进行交互。它的主要配置主要有filter:com.joyowo.cas.filter包下的五个类：

Cas20ProxyReceivingTicketValidationFilter 对于client接收到的ticket进行验证

HttpServletRequestWrapperFilter

myAuthenticationFilter 判断用户是否登录，如果登录则进入第二步，否则重定向到cas服务器

SingleSignOutFilter

SingleSignOutHttpSessionListener

###配置文件说明

#cas client config
cas:
    server:
      login_url: http://your.cas.cerver:host/login
      url_prefix: http://1your.cas.cerver:host/

    service:
      server_name: http://localhost:8080

注意casServerLoginUrl指服务器的地址；而serverName指的是应用的地址

##未修改之前的web.xml格式

```xml
<!--  1 -->
<filter>
	<filter-name>CAS Authentication Filter</filter-name>
	<filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
	<init-param>
		<param-name>casServerLoginUrl</param-name>
		<param-value>http://server.cas.com:8080/cas/login</param-value>
	</init-param>
	<init-param>
		<param-name>serverName</param-name>
		<param-value>http://client.app.com:8070</param-value>
	</init-param>
</filter>

<!--  2-- >
<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>http://server.cas.com:8080/cas/login</param-value>
</init-param>
<init-param>
	<param-name>serverName</param-name>
	<param-value>http://client.app.com:8070</param-value>
</init-param>
</filter>

<!--  3 -->
<filter>
	<filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
	<filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class>
</filter>

<!--   4 -->
<filter>
	<filter-name>CAS Assertion Thread Local Filter</filter-name>
	<filter-class>org.jasig.cas.client.util.AssertionThreadLocalFilter</filter-class>
</filter>

<!--   filter mapping的顺序不能乱-->
<filter-mapping>
	<filter-name>CAS Authentication Filter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
	<filter-name>CAS Validation Filter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
	<filter-name>CAS HttpServletRequest WrapperFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
	<filter-name>CAS Assertion Thread Local Filter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

```

###参考文档

http://blog.csdn.net/zhurhyme/article/details/29349543

https://github.com/apereo/java-cas-client