由于项目需求要实现单点登出需要在网上找了N久终于实现单点登出。
使用cas-server-core-3.3.3.jar(CAS Server 3.3.3)
使用cas-client-core-3.1.3.jar(CAS Client 3.1.3)
项目结合CAS SpringSecurity SSH
普通项目(没有结合Spring Security)的可以在web.xml中加入如下代码
- <filter>
- <filter-name>CAS Single Sign Out Filter</filter-name>
- <filter-class>org.jasig.cas.client.session.SingleSignOutFilter</filter-class>
- </filter>
- <filter-mapping>
- <filter-name>CAS Single Sign Out Filter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- <listener>
- <listener-class>
- org.jasig.cas.client.session.SingleSignOutHttpSessionListener
- </listener-class>
- </listener>
在我们的项目中由于结合了SpringSecurity 可以将filter加入到spring Security过滤链中,也可以直接向上面的一样加入web.xml中
首先在web.xml中加入监听器。
- <!-- single sign out -->
- <listener>
- <listener-class>
- org.jasig.cas.client.session.SingleSignOutHttpSessionListener
- </listener-class>
- </listener>
- <!-- single sign out -->
然后把filter加入到spring Security过滤链中
- <!-- single sign out -->
- <b:bean id="casSingleSignOutFilter" class="check.SingleSignOutFilter">
- <custom-filter before="CAS_PROCESSING_FILTER"/>
- </b:bean>
- <!-- single sign out -->
注意上面的class="check.SingleSignOutFilter"是我自定义的filter(由于CAS3.1.3定义的SingleSignOutFilter在某种意思上没有起到作用)详情请见http://www.javaeye.com/topic/546785
自己定义一个类
- package check;
- import java.io.IOException;
- import java.util.Enumeration;
- 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 javax.servlet.http.HttpSession;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.jasig.cas.client.session.HashMapBackedSessionMappingStorage;
- import org.jasig.cas.client.session.SessionMappingStorage;
- import org.jasig.cas.client.util.AbstractConfigurationFilter;
- import org.jasig.cas.client.util.CommonUtils;
- import org.jasig.cas.client.util.XmlUtils;
- public final class SingleSignOutFilter extends AbstractConfigurationFilter
- {
- private String artifactParameterName;
- private static SessionMappingStorage SESSION_MAPPING_STORAGE = new HashMapBackedSessionMappingStorage();
- private static Log log = LogFactory.getLog(SingleSignOutFilter.class);
- public SingleSignOutFilter()
- {
- this.artifactParameterName = "ticket";
- }
- public void init(FilterConfig filterConfig)
- throws ServletException
- {
- setArtifactParameterName(getPropertyFromInitParams(filterConfig, "artifactParameterName", "ticket"));
- init();
- }
- public void init() {
- CommonUtils.assertNotNull(this.artifactParameterName, "artifactParameterName cannot be null.");
- CommonUtils.assertNotNull(SESSION_MAPPING_STORAGE, "sessionMappingStorage cannote be null.");
- }
- public void setArtifactParameterName(String artifactParameterName) {
- this.artifactParameterName = artifactParameterName;
- }
- public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
- final HttpServletRequest request = (HttpServletRequest) servletRequest;
- final String logoutRequest = CommonUtils.safeGetParameter(request, "logoutRequest");
- Enumeration ff = request.getParameterNames();
- String a = request.getQueryString();
- if (CommonUtils.isNotBlank(logoutRequest)) {
- final String sessionIdentifier = XmlUtils.getTextForElement(logoutRequest, "SessionIndex");
- if (CommonUtils.isNotBlank(sessionIdentifier)) {
- final HttpSession session = SESSION_MAPPING_STORAGE.removeSessionByMappingId(sessionIdentifier);
- if (session != null) {
- String sessionID = session.getId();
- try {
- session.invalidate();
- } catch (final IllegalStateException e) {
- }
- }
- }
- }
- else{
- final String artifact = CommonUtils.safeGetParameter(request, this.artifactParameterName);
- final HttpSession session = request.getSession(false);
- if (CommonUtils.isNotBlank(artifact) && session!=null) {
- try {
- SESSION_MAPPING_STORAGE.removeBySessionById(session.getId());
- } catch (final Exception e) {
- }
- SESSION_MAPPING_STORAGE.addSessionById(artifact, session);
- }
- }
- filterChain.doFilter(servletRequest, servletResponse);
- }
- public void setSessionMappingStorage(SessionMappingStorage storage) {
- SESSION_MAPPING_STORAGE = storage;
- }
- public static SessionMappingStorage getSessionMappingStorage() {
- return SESSION_MAPPING_STORAGE;
- }
- public void destroy()
- {
- }
- }
完成。
这样即可实现单点登出。(所有java应用的单点退出)
1)这样实现的效果是在登出的时候CAS Server 分发给各个客户端让各个客户端都登出,这个得让FIlter来获取,例子:一个index页面有两个链接一个指向java应用,一个指向php应用在 java应用加filter 后能做出相应的动作退出动作,而对于php自己没加任何filter就没有退出。所以也得写个filter。
2)由于我们点击退出的时候请求CAS Server 而后Server分发任务让每个应用退出的消息,java程序通过filter来执行退出。PHP提供了一个phpCAS::handleLogoutRequests()来检验服务器发来的信息,
具体我们可以把这个代码放在phpbb3/include/function.php中的点击事件里面代码如下:
- if(!$admin && CAS_ENABLE){
- // initialize phpCAS
- phpCAS::client(CAS_VERSION_2_0, CAS_SERVER_HOSTNAME, CAS_SERVER_PORT, CAS_SERVER_APP_NAME);
- phpCAS::setNoCasServerValidation();
- // force CAS authentication
- phpCAS::handleLogoutRequests();//加的去看看有没有服务器端发出注销消息。
- phpCAS::forceAuthentication();
原文出自:http://blog.csdn.net/lishuangzhe7047/article/details/38587151