CAS单点登录中文用户名乱码问题

CAS单点登录中文用户名乱码问题，有两种情况

1. CAS server乱码

即在向server端提交用户名和密码时，发生了乱码，解决方法是:

打开WEB-INF/web.xml，在其它的Filter之前，添加

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1. <!-- 字符编码过滤 -->  
2.  <filter>  
3.      <filter-name>characterEncodingFilter</filter-name>  
4.      <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
5.      <init-param>  
6.       <param-name>encoding</param-name>  
7.       <param-value>UTF-8</param-value>  
8.      </init-param>  
9.      <init-param>  
10.       <param-name>forceEncoding</param-name>  
11.       <param-value>true</param-value>  
12.      </init-param>  
13.  </filter>  
14.  <filter-mapping>  
15.    <filter-name>characterEncodingFilter</filter-name>  
16.    <url-pattern>/*</url-pattern>  
17.  </filter-mapping>  

这里，用的是springframework的filter，因为lib里面已经有了spring的jar。

2. server向client传递用户名的时候，产生乱码，导致了解析错误，跑出了空指针异常，解决方法是：

修改client的web.xml，添加红色部分

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1. <filter>  
2.         <filter-name>CAS Validation Filter</filter-name>  
3.         <filter-class>  
4.             org.jasig.cas.client.validation.Cas20ProxyReceivingTicketValidationFilter  
5.         </filter-class>  
6.         <init-param>  
7.             <param-name>casServerUrlPrefix</param-name>  
8.             <param-value>http://10.15.62.29:8080/cas</param-value>  
9.         </init-param>  
10.         <init-param>  
11.             <param-name>serverName</param-name>  
12.             <param-value>http://10.15.62.32</param-value>  
13.         </init-param>  
14.         <init-param>  
15.             <param-name>encoding</param-name>  
16.             <param-value>UTF-8</param-value>  
17.         </init-param>  
18.         <span style="color:#ff0000;"><init-param>  
19.             <param-name>redirectAfterValidation</param-name>  
20.             <param-value>true</param-value>  
21.         </init-param>  
22.         <init-param>  
23.             <param-name>encoding</param-name>  
24.             <param-value>UTF-8</param-value>  
25.         </init-param></span>  
26.     </filter>  
27.     <filter-mapping>  
28.         <filter-name>CAS Validation Filter</filter-name>  
29.         <url-pattern>/user/loginpage</url-pattern>  
30.     </filter-mapping>  

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