---------web.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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_2_5.xsd">
<filter>
<filter-name>aa</filter-name>
<filter-class>cn.util.AutoSetUserAdapterFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>aa</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
-----AutoSetUserAdapterFilter
package cn.util;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import org.jasig.cas.client.validation.Assertion;
/**
* CAS单点登陆的过滤器功能类，该类用来自动生成子应用的登陆Session
*
*/
public class AutoSetUserAdapterFilter implements Filter {
/**
* Default constructor.
*/
public AutoSetUserAdapterFilter() {
}
/**
* @see Filter#destroy()
*/
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException {
HttpServletRequest httpRequest = (HttpServletRequest) request;
// _const_cas_assertion_是CAS中存放登录用户名的session标志
Object object = httpRequest.getSession().getAttribute("_const_cas_assertion_");
System.out.println("-------------"+object);
if (object != null) {
Assertion assertion = (Assertion) object;
String loginName = assertion.getPrincipal().getName();
System.out.println("-------------"+object);
// 第一次登录系统
}
chain.doFilter(request, response);
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
System.out.println("--------初始化AutoSetUserAdapterFilter-----");
}
}
