shiro+cas微服务化笔记
1.Spring Boot 配置
有如下两个配置文件：ShiroBaseConfig.java
import lombok.extern.log4j.Log4j;
import org.apache.shiro.cache.CacheManager;
import org.apache.shiro.cache.MemoryConstrainedCacheManager;
import org.apache.shiro.cas.CasFilter;
import org.apache.shiro.codec.Base64;
import org.apache.shiro.session.mgt.eis.MemorySessionDAO;
import org.apache.shiro.web.mgt.CookieRememberMeManager;
import org.apache.shiro.web.servlet.SimpleCookie;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* <p>
* Description: shiro权限管理模块conf
*
* @author Dean.Hwang
* @date 17/5/18
*/
@Configuration
@Log4j
public class ShiroBaseConfiguration {
@Value("${cas.server.url.prefix}")
private String casPrefix;
@Value("${cas.service}")
private String casService;
/**
* 会话Cookie模板
*
* @return
*/
@Bean
public SimpleCookie sessionIdCookie() {
SimpleCookie simpleCookie = new SimpleCookie("sid");
simpleCookie.setHttpOnly(true);
simpleCookie.setMaxAge(1800000);
return simpleCookie;
}
/**
* 会话Cookie模板
*
* @return
*/
@Bean
public SimpleCookie rememberCookie() {
SimpleCookie simpleCookie = new SimpleCookie("rememberMe");
simpleCookie.setHttpOnly(true);
simpleCookie.setMaxAge(2592000);//30天
return simpleCookie;
}
/**
* rememberMe 管理器
*
* @return
*/
@Bean
public CookieRememberMeManager rememberMeManager(SimpleCookie rememberCookie) {
CookieRememberMeManager cookieRememberMeManager = new CookieRememberMeManager();
cookieRememberMeManager.setCipherKey(Base64.decode(""));// rememberMe cookie加密的密钥 建议每个项目都不一样 默认AES算法 密钥长度（128 256 512 位）
cookieRememberMeManager.setCookie(rememberCookie);
return cookieRememberMeManager;
}
/**
* 会话DAO
*
* @return
*/
@Bean
public MemorySessionDAO sessionDAO() {
return new MemorySessionDAO();
}
@Bean
public CacheManager shiroCacheManager() {
return new MemoryConstrainedCacheManager();
}
@Bean
public KryCasRealm casRealm(CacheManager shiroCacheManager) {
return new KryCasRealm(casPrefix, casService, shiroCacheManager);
}
@Bean
public CasFilter casFilter() {
CasFilter casFilter = new CasFilter();
casFilter.setEnabled(true);
casFilter.setName("casFilter");
casFilter.setFailureUrl("/authority/casFailure");
return casFilter;
}
}
下面ShiroManagerConfiguration.java 文件
import com.keruyun.portal.portalbiz.sso.KryCasRealm;
import com.keruyun.portal.portalbiz.sso.filter.PortalUserFilter;
import org.apache.shiro.cache.CacheManager;
import org.apache.shiro.cas.CasFilter;
import org.apache.shiro.cas.CasSubjectFactory;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.filter.authc.LogoutFilter;
import org.apache.shiro.web.mgt.CookieRememberMeManager;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.session.mgt.ServletContainerSessionManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.MethodInvokingFactoryBean;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.Filter;
import java.util.HashMap;
import java.util.Map;
/**
* <p>
* Description: com.keruyun.portal.portalbiz.conf.shiro
* </p>
* <p>
* Copyright: Copyright (c) 2015
* </p>
* <p>
* Company: 客如云
* </p>
*
* @author Dean.Hwang
* @date 17/5/18
*/
@Configuration
@AutoConfigureAfter(
{ShiroBaseConfiguration.class}
)
public class ShiroManagerConfiguration {
@Autowired
private KryCasRealm kryCasRealm;
@Autowired
private CacheManager shiroCacheManager;
@Autowired
private CookieRememberMeManager rememberMeManager;
@Value("${cas.server.login.url}")
private String loginUrl;
@Value("${cas.client.url.prefix}")
private String urlPrefix;
@Autowired
private CasFilter casFilter;
@Value("${cas.server.logout.url}")
private String logoutUrl;
@Value("${cas.client.index.url}")
private String indexUrl;
@Bean
public DefaultWebSecurityManager securityManager() {
DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
securityManager.setRealm(kryCasRealm);
securityManager.setSessionManager(new ServletContainerSessionManager());
securityManager.setCacheManager(shiroCacheManager);
securityManager.setRememberMeManager(rememberMeManager);
securityManager.setSubjectFactory(new CasSubjectFactory());
return securityManager;
}
/**
* 相当于调用SecurityUtils.setSecurityManager(securityManager)
*
* @param securityManager
* @return
*/
@Bean
public MethodInvokingFactoryBean methodInvokingFactoryBean(DefaultWebSecurityManager securityManager) {
MethodInvokingFactoryBean bean = new MethodInvokingFactoryBean();
bean.setStaticMethod("org.apache.shiro.SecurityUtils.setSecurityManager");
bean.setArguments(new Object[]{securityManager});
return bean;
}
@Bean
public ShiroFilterFactoryBean shiroFilter(DefaultWebSecurityManager securityManager) {
ShiroFilterFactoryBean factoryBean = new ShiroFilterFactoryBean();
factoryBean.setSecurityManager(securityManager);
factoryBean.setLoginUrl(loginUrl + serviceStr + urlPrefix + "/cas");
factoryBean.setSuccessUrl("../mind/index.do");
factoryBean.setUnauthorizedUrl("/unauthorized.jsp");
Map<String, Filter> filterMap = new HashMap<>();
filterMap.put("cas", casFilter);
filterMap.put("user", portalUserFilter);
//只能在这里初始化LogoutFilter，不然会被spring boot注册到/*
PortalLogoutFilter logoutFilter = new PortalLogoutFilter();
logoutFilter.setRedirectUrl(logoutUrl + serviceStr + indexUrl);
filterMap.put("logout", logoutFilter);
factoryBean.setFilters(filterMap);
Map<String, String> filters = new HashMap<>();
filters.put("/casFailure.jsp", "anon");
filters.put("/js/**", "anon");
filters.put("/themes/**", "anon");
filters.put("/3rdOauth/**", "anon");
filters.put("/cas", "cas");
filters.put("/logout", "logout");
filters.put("/**", "user");
factoryBean.setFilterChainDefinitionMap(filters);
return factoryBean; }
}
2.UserFilter的改造
2.1改造的原因：
因为，我们现在新的服务器架构是前后端完全分离的。但是，shiro是不支持完全的前后端分离。所以导致了单点登录完成以后会跳转至接口，而不是目标页面。同时，由于历史原因，我们的cas验证服务器与业务服务器不是同一个域。如果，需要在服务器端进行重定向就必须要通过跨域，考虑到跨域会有风险。所以，我也将sso服务器登录重定向进行了重构。做成了返回json，前端在接收到json自己进行登录页跳转。
具体的实现代码如下:
protected void saveRequestAndRedirectToLogin(ServletRequest request, ServletResponse response) throws IOException {
Session session = SecurityUtils.getSubject().getSession();
if (session != null) {
SavedRequest savedRequest = new PortalSavedRequest(WebUtils.toHttp(request));//重写的SavedRequest，具体处理由不同的业务需求自定
session.setAttribute(SAVED_REQUEST_KEY, savedRequest);
}
PrintWriter out = null;
try {
ResultVO<Object> vo = ResultVO.isRedirect();
RedirectInfo info = new RedirectInfo(loginRedirectUrl);
vo.setData(info);
response.setCharacterEncoding("UTF-8");
response.setContentType("application/json; charset=utf-8");
out = response.getWriter();
out.write(JsonMapper.nonDefaultMapper().toJson(vo));
} catch (IOException e) {
log.error("登录重定向失败(Login Redirect Failed)", e);
} finally {
if (out != null) {
out.close();
}
}
}
此方法是将Cas中的Userfilter进行了重写，并且在配置时使用重写的类对原有的UserFilter进行了覆盖。
3.登录成功后的重定向:
由于在sso验证服务器登录成功以后会重定向到本地业务服务器上。本地业务服务器验证登录成功以后会默认重定向至配置的SuccessUrl。这样并不能将页面跳转回用户的原来请求的页面。所以我重写了CasFilter中的issueSuccessRedirect达到这个目的
/**
* <p>
* Description: com.keruyun.portal.portalbiz.sso.filter
* </p>
* <p>
* Copyright: Copyright (c) 2015
* </p>
* <p>
* Company: 客如云
* </p>
*
* @author Dean.Hwang
* @date 17/7/17
*/
public class PortalCasFilter extends CasFilter {
@Override
protected void issueSuccessRedirect(ServletRequest request, ServletResponse response) throws Exception {
String successUrl = ((ShiroHttpServletRequest) request).getHeader("page-url");//前端页面在请求的时候在header中带上请求这个接口的url。这样便将登录成功后需要跳转的地址绑定到了对应的Subject对象中。以便于在登录以后跳转到这个页面
if (StringUtil.isBlank(successUrl)) {
WebUtils.redirectToSavedRequest(request, response, getSuccessUrl());
} else {
WebUtils.redirectToSavedRequest(request, response, successUrl);
}
}
}
4.用户安全的退出
后期发现直接依靠原有的logout会发生session未注销的情况。所以重写了LogoutFilter。登出的时候直接调用配置的URL即可
/**
* <p>
* Description: com.keruyun.portal.portalbiz.sso.filter
* </p>
* <p>
* Copyright: Copyright (c) 2015
* </p>
* <p>
* Company: 客如云
* </p>
*
* @author Dean.Hwang
* @date 17/7/17
*/
public class PortalLogoutFilter extends AdviceFilter {
private static final Logger log = LoggerFactory.getLogger(LogoutFilter.class);
public static final String DEFAULT_REDIRECT_URL = "/";
private String redirectUrl = DEFAULT_REDIRECT_URL;
@Override
protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
Subject subject = getSubject(request, response);
String redirectUrl = getRedirectUrl(request, response, subject);
//try/catch added for SHIRO-298:
try {
subject.logout();
Session session = subject.getSession();
session.stop();
} catch (SessionException ise) {
log.debug("Encountered session exception during logout. This can generally safely be ignored.", ise);
}
issueRedirect(request, response, redirectUrl);
return false;
}
}
