挣扎了两周,Spring security的cas终于搞出来了,废话不多说,开篇!
1.Spring boot集成Spring security
本篇是使用spring security集成cas,因此,先得集成spring security
新建一个Spring boot项目,加入maven依赖,我这里是用的架构是Spring boot2.0.4+Spring mvc+Spring data jpa+Spring security5
pom.xml:
4.0.0 com.cas.client1 cas-client1 0.0.1-SNAPSHOT jar cas-client1 Demo project for Spring Boot org.springframework.boot spring-boot-starter-parent 2.0.4.RELEASE UTF-8 UTF-8 1.8 org.springframework.boot spring-boot-starter-web spring-boot-starter-thymeleaf spring-boot-starter-tomcat provided junit junit 4.12 test spring-boot-starter-test spring-boot-starter-security org.springframework.security spring-security-test spring-security-taglibs org.springframework.security.oauth spring-security-oauth2 RELEASE spring-boot-starter-data-jpa spring-boot-starter-jdbc mysql mysql-connector-java 5.1.46 com.alibaba druid-spring-boot-starter 1.1.10 spring-boot 2.0.2.RELEASE compile org.springframework.boot spring-boot-maven-plugin
application.properties:
server.port=8083 #静态文件访问存放地址 spring.resources.static-locations=classpath:/html/ # thymeleaf 模板存放地址 spring.thymeleaf.prefix=classpath:/html/ spring.thymeleaf.suffix=.html spring.thymeleaf.mode=LEGACYHTML5 spring.thymeleaf.encoding=UTF-8 # JDBC 配置(驱动类自动从url的mysql识别,数据源类型自动识别) # 或spring.datasource.url= spring.datasource.druid.url=jdbc:mysql://localhost:3306/vhr?useUnicode=true&characterEncoding=UTF8 # 或spring.datasource.username= spring.datasource.druid.username=root # 或spring.datasource.password= spring.datasource.druid.password=1234 #或 spring.datasource.driver-class-name= #spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver #连接池配置(通常来说,只需要修改initialSize、minIdle、maxActive # 如果用Oracle,则把poolPreparedStatements配置为true,mysql可以配置为false。分库分表较多的数据库,建议配置为false。removeabandoned不建议在生产环境中打开如果用SQL Server,建议追加配置) spring.datasource.druid.initial-size=1 spring.datasource.druid.max-active=20 spring.datasource.druid.min-idle=1 # 配置获取连接等待超时的时间 spring.datasource.druid.max-wait=60000 #打开PSCache,并且指定每个连接上PSCache的大小 spring.datasource.druid.pool-prepared-statements=true spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20 #spring.datasource.druid.max-open-prepared-statements=和上面的等价 spring.datasource.druid.validation-query=SELECT 'x' #spring.datasource.druid.validation-query-timeout= spring.datasource.druid.test-on-borrow=false spring.datasource.druid.test-on-return=false spring.datasource.druid.test-while-idle=true #配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 spring.datasource.druid.time-between-eviction-runs-millis=60000 #配置一个连接在池中最小生存的时间,单位是毫秒 spring.datasource.druid.min-evictable-idle-time-millis=300000 #spring.datasource.druid.max-evictable-idle-time-millis= #配置多个英文逗号分隔 #spring.datasource.druid.filters= stat # WebStatFilter配置,说明请参考Druid Wiki,配置_配置WebStatFilter #是否启用StatFilter默认值true spring.datasource.druid.web-stat-filter.enabled=true spring.datasource.druid.web-stat-filter.url-pattern=/* spring.datasource.druid.web-stat-filter.exclusions=*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/* spring.datasource.druid.web-stat-filter.session-stat-enable=false spring.datasource.druid.web-stat-filter.session-stat-max-count=1000 spring.datasource.druid.web-stat-filter.principal-session-name=admin spring.datasource.druid.web-stat-filter.principal-cookie-name=admin spring.datasource.druid.web-stat-filter.profile-enable=true # StatViewServlet配置 #展示Druid的统计信息,StatViewServlet的用途包括:1.提供监控信息展示的html页面2.提供监控信息的JSON API #是否启用StatViewServlet默认值true spring.datasource.druid.stat-view-servlet.enabled=true spring.datasource.druid.stat-view-servlet.url-pattern=/druid/* # JPA config spring.jpa.database=mysql spring.jpa.hibernate.ddl-auto=update spring.jpa.show-sql=true spring.jpa.generate-ddl=true spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect spring.jpa.open-in-view=true # 解决jpa no session的问题 spring.jpa.properties.hibernate.enable_lazy_load_no_trans=true
这里使用数据库存储角色权限信息,分三种实体:用户;角色;资源;用户对角色多对多;角色对资源多对多
创建几个实体类:
用户:这里直接使用用户持久化对象实现Spring security要求的UserDetails接口,并实现对应方法
package com.cas.client1.entity; import org.springframework.security.core.GrantedAuthority; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.util.CollectionUtils; import javax.persistence.*; import java.util.ArrayList; import java.util.Collection; import java.util.List; @Entity @Table(name = "s_user") public class User implements UserDetails { @Id private String id; @Column(name = "username") private String username; @Column(name = "password") private String password; @ManyToMany(fetch = FetchType.LAZY) @JoinTable( name = "s_user_role", joinColumns = @JoinColumn(name = "user_id"), inverseJoinColumns = @JoinColumn(name = "role_id") ) private Listroles; public User() { } public User(String id, String username, String password) { this.id = id; this.username = username; this.password = password; public String getId() { return id; public void setId(String id) { public List getRoles() { return roles; public void setRoles(List roles) { this.roles = roles; @Override public String getUsername() { return username; public boolean isAccountNonExpired() { return true; public boolean isAccountNonLocked() { public boolean isCredentialsNonExpired() { public boolean isEnabled() { public void setUsername(String username) { @Transient List grantedAuthorities=new ArrayList<>(); public Collection getAuthorities() { if (grantedAuthorities.size()==0){ if (!CollectionUtils.isEmpty(roles)){ for (Role role:roles){ List resources = role.getResources(); if (!CollectionUtils.isEmpty(resources)){ for (Resource resource:resources){ grantedAuthorities.add(new SimpleGrantedAuthority(resource.getResCode())); } } } } grantedAuthorities.add(new SimpleGrantedAuthority("AUTH_0")); } return grantedAuthorities; public String getPassword() { return password; public void setPassword(String password) { }
注意看这里:
我给每一位登录的用户都授予了AUTH_0的权限,AUTH_0在下面的SecurityMetaDataSource里被关联的url为:/**,也就是说除开那些机密程度更高的,这个登录用户能访问所有资源
角色:
package com.cas.client1.entity; import javax.persistence.*; import java.util.List; /** * @author Administrator */ @Entity @Table(name = "s_role") public class Role { @Id @Column(name = "id") private String id; @Column(name = "role_name") private String roleName; @ManyToMany(fetch = FetchType.LAZY) @JoinTable( name = "s_role_res", joinColumns = @JoinColumn(name = "role_id"), inverseJoinColumns = @JoinColumn(name = "res_id") ) private Listresources; name = "s_user_role", inverseJoinColumns = @JoinColumn(name = "user_id") private List users; public String getId() { return id; } public void setId(String id) { this.id = id; public String getRoleName() { return roleName; public void setRoleName(String roleName) { this.roleName = roleName; public List getResources() { return resources; public void setResources(List resources) { this.resources = resources; public List getUsers() { return users; public void setUsers(List users) { this.users = users; }
权限:
package com.cas.client1.entity; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table(name = "s_resource") public class Resource { @Id @Column(name = "id") private String id; @Column(name = "res_name") private String resName; @Column(name = "res_code") private String resCode; @Column(name = "url") private String url; @Column(name = "priority") private String priority; public String getId() { return id; } public void setId(String id) { this.id = id; public String getResName() { return resName; public void setResName(String resName) { this.resName = resName; public String getResCode() { return resCode; public void setResCode(String resCode) { this.resCode = resCode; public String getUrl() { return url; public void setUrl(String url) { this.url = url; public String getPriority() { return priority; public void setPriority(String priority) { this.priority = priority; }
建立几个DAO
UserDao:
package com.cas.client1.dao; import com.cas.client1.entity.User; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.Query; import org.springframework.data.repository.query.Param; import org.springframework.stereotype.Repository; import java.util.List; @Repository public interface UserDao extends JpaRepository{ @Override List findAll(); List findByUsername(String username); /** * 根据用户名like查询 * @param username * @return */ List getUserByUsernameContains(String username); @Query("from User where id=:id") User getUserById(@Param("id") String id); }
ResourceDao:
package com.cas.client1.dao; import com.cas.client1.entity.Resource; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.Query; import org.springframework.stereotype.Repository; import java.util.List; /** * @author Administrator */ @Repository public interface ResourceDao extends JpaRepository{ @Query("from Resource order by priority") List getAllResource(); }
Service
UserService:
package com.cas.client1.service; import com.cas.client1.dao.UserDao; import com.cas.client1.entity.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class UserService { @Autowired private UserDao userDao; public User findByUsername(String username){ Listlist = userDao.findByUsername(username); return list!=null&&list.size()>0?list.get(0):null; } }
ResourceService:
package com.cas.client1.service; import com.cas.client1.dao.ResourceDao; import com.cas.client1.entity.Resource; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class ResourceService { @Autowired private ResourceDao resourceDao; public ListgetAll(){ return resourceDao.getAllResource(); } }
创建UserDetailsServiceImpl,实现UserDetailsService接口,这个类是用以提供给Spring security从数据库加载用户信息的
package com.cas.client1.security; import com.cas.client1.entity.User; import com.cas.client1.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.cas.authentication.CasAssertionAuthenticationToken; import org.springframework.security.core.userdetails.AuthenticationUserDetailsService; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.core.userdetails.UsernameNotFoundException; import org.springframework.stereotype.Component; /** * @author Administrator */ @SuppressWarnings("ALL") @Component public class UserDetailsServiceImpl implements UserDetailsService{ @Autowired private UserService userService; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { User user = userService.findByUsername(username); return user; } }
记得加@Component注解,以把实例交由Spring管理,或@Service,你们喜欢就好
创建SecurityMetaDataSource类
该类实现Spring security的FilterInvocationSecurityMetadataSource接口,作用是提供权限的元数据定义,并根据请求url匹配该url所需要的权限,获取权限后交由AccessDecisionManager的实现者裁定能否访问这个url,不能则会返回403的http错误码
SecurityMetaDataSource:
package com.cas.client1.security; import com.cas.client1.entity.Resource; import com.cas.client1.service.ResourceService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.access.AccessDecisionManager; import org.springframework.security.access.ConfigAttribute; import org.springframework.security.access.SecurityConfig; import org.springframework.security.access.intercept.AbstractSecurityInterceptor; import org.springframework.security.web.FilterInvocation; import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource; import org.springframework.security.web.util.matcher.AndRequestMatcher; import org.springframework.security.web.util.matcher.AntPathRequestMatcher; import org.springframework.security.web.util.matcher.RequestMatcher; import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; import java.util.*; @Component public class SecurityMetaDataSource implements FilterInvocationSecurityMetadataSource { @Autowired private ResourceService resourceService; private LinkedHashMap> metaData; @PostConstruct private void loadSecurityMetaData(){ List list = resourceService.getAll(); metaData=new LinkedHashMap<>(); for (Resource resource:list){ List attributes=new ArrayList<>(); attributes.add(new SecurityConfig(resource.getResCode())); metaData.put(resource.getUrl(),attributes); } List base=new ArrayList<>(); base.add(new SecurityConfig("AUTH_0")); metaData.put("/**",base); } @Override public Collection getAttributes(Object object) throws IllegalArgumentException { FilterInvocation invocation= (FilterInvocation) object; if (metaData==null){ return new ArrayList<>(0); } String requestUrl = invocation.getRequestUrl(); System.out.println("请求Url:"+requestUrl); Iterator >> iterator = metaData.entrySet().iterator(); Collection rs=new ArrayList<>(); while (iterator.hasNext()){ Map.Entry > next = iterator.next(); String url = next.getKey(); Collection value = next.getValue(); RequestMatcher requestMatcher=new AntPathRequestMatcher(url); if (requestMatcher.matches(invocation.getRequest())){ rs = value; break; } } System.out.println("拦截认证权限为:"+rs); return rs; } @Override public Collection getAllConfigAttributes() { System.out.println("invoke getAllConfigAttributes "); //loadSecurityMetaData(); //System.out.println("初始化元数据"); Collection > values = metaData.values(); Collection all=new ArrayList<>(); for (Collection each:values){ each.forEach(configAttribute -> { all.add(configAttribute); }); } return all; } @Override public boolean supports(Class clazz) { return true; } }
同理:记得加上@Component注解
重头戏来了!Spring security的配置
创建SpringSecurityConfig类
该类继承于WebSecurityConfigurerAdapter,核心的配置类,在这里定义Spring security的使用方式
SpringSecurityConfig
package com.cas.client1.security; import com.cas.client1.config.CasProperties; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.security.access.AccessDecisionManager; import org.springframework.security.access.AccessDecisionVoter; import org.springframework.security.access.vote.AffirmativeBased; import org.springframework.security.access.vote.RoleVoter; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.builders.WebSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.web.access.intercept.FilterSecurityInterceptor; import java.util.ArrayList; import java.util.List; /** * Spring security配置 * @author youyp * @date 2018-8-10 */ @SuppressWarnings("ALL") @Configuration @EnableWebSecurity public class SpringSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private UserDetailsServiceImpl userDetailsService; @Autowired private SecurityMetaDataSource securityMetaDataSource; @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { super.configure(auth); } @Override public void configure(WebSecurity web) throws Exception { web.ignoring().antMatchers("/js/**","/css/**","/img/**","/*.ico","/login.html", "/error","/login.do"); } @Override protected void configure(HttpSecurity http) throws Exception { System.out.println("配置Spring security"); http.formLogin() //指定登录页是”/login” .loginPage("/login.html").permitAll() .loginProcessingUrl("/login.do").permitAll() .defaultSuccessUrl("/home",true) .permitAll() //登录成功后可使用loginSuccessHandler()存储用户信息,可选。 //.successHandler(loginSuccessHandler()).permitAll() .and() .logout().permitAll() .invalidateHttpSession(true) .and() //登录后记住用户,下次自动登录,数据库中必须存在名为persistent_logins的表 .rememberMe() .tokenValiditySeconds(1209600) .and() .csrf().disable() //其他所有资源都需要认证,登陆后访问 .authorizeRequests().anyRequest().fullyAuthenticated(); http.addFilterBefore(filterSecurityInterceptor(),FilterSecurityInterceptor.class); } /** * 注意:这里不能加@Bean注解 * @return * @throws Exception */ //@Bean public FilterSecurityInterceptor filterSecurityInterceptor() throws Exception { FilterSecurityInterceptor filterSecurityInterceptor=new FilterSecurityInterceptor(); filterSecurityInterceptor.setSecurityMetadataSource(securityMetaDataSource); filterSecurityInterceptor.setAuthenticationManager(authenticationManager()); filterSecurityInterceptor.setAccessDecisionManager(affirmativeBased()); return filterSecurityInterceptor; } /** * 重写AuthenticationManager获取的方法并且定义为Bean * @return * @throws Exception */ @Override @Bean public AuthenticationManager authenticationManagerBean() throws Exception { return super.authenticationManagerBean(); } @Autowired public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception { //指定密码加密所使用的加密器为passwordEncoder() //需要将密码加密后写入数据库 auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder()); auth.eraseCredentials(false); } @Bean public BCryptPasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(4); } /** * 定义决策管理器,这里可直接使用内置的AffirmativeBased选举器, * 如果需要,可自定义,继承AbstractAccessDecisionManager,实现decide方法即可 * @return */ @Bean public AccessDecisionManager affirmativeBased(){ List> voters=new ArrayList<>(); voters.add(roleVoter()); System.out.println("正在创建决策管理器"); return new AffirmativeBased(voters); } /** * 定义选举器 * @return */ @Bean public RoleVoter roleVoter(){ //这里使用角色选举器 RoleVoter voter=new RoleVoter(); System.out.println("正在创建选举器"); voter.setRolePrefix("AUTH_"); System.out.println("已将角色选举器的前缀修改为AUTH_"); return voter; } }
说一个注意点:
FilterSecurityInterceptor这个过滤器最为重要,它负责数据库权限信息加载,权限鉴定等关键动作,这个过滤器位于SpringSecurityFilterChain,即Spring security的过滤器链中,如果将这个类在配置类中加了@Bean注解,那么它将直接加入web容器的过滤器链中,这个链是首层过滤器链,
进入这个过滤器链之后才会进入SpringSecurityFilterChain这个负责安全的链条,如果这个跑到外层去了,就会导致这个独有的过滤器一直在生效,请求无限被拦截重定向,因为这个过滤器前面没有别的过滤器阻止它生效,如果它位于SpringSecurityFilterChain中,在进入FilterSecurityInterceptor这个
过滤器之前会有很多的Spring security过滤器在生效,如果不满足前面的过滤器的条件,不会进入到这个过滤器。也就是说,要进入到这个过滤器,必须要从SpringSecurityFilterChain进入,从其他地方进入都会导致请求被无限重定向
另外
FilterSecurityInterceptor这个类继承于AbstractSecurityInterceptor并实现Filter接口,由此我们可以重写该类,自定义我们的特殊业务,但是,个人觉得FilterSecurityInterceptor这个实现类已经很完整地实现了这个过滤器应做的工作,没有必要重写
类似的,还有AccessDecisionManager这个“决策者”,Spring security为这个功能提供了几个默认的实现者,如AffirmativeBased这个类,是一个基于投票的决策器,投票器(Voter)要求实现AccessDecisionVoter接口,Spring security已为我们提供了几个很有用的投票器如RoleVoter,WebExpressionVoter
这些我们都没有必要去自定义,而且自定义出来的也没有默认实现拓展性和稳定性更好
再定义一个登陆的Controller
LoginController
package com.cas.client2.casclient2.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.authentication.UsernamePasswordAuthenticationToken; import org.springframework.security.cas.authentication.CasAuthenticationToken; import org.springframework.security.cas.web.CasAuthenticationFilter; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import javax.servlet.http.HttpSession; @SuppressWarnings("ALL") @Controller public class LoginController { @Autowired private AuthenticationManager authenticationManager; /** * 自定义登录地址 * @param username * @param password * @param session * @return */ @RequestMapping("login.do") public String login(String username,String passwod, HttpSession session){ try { System.out.println("进入登录请求.........."); UsernamePasswordAuthenticationToken token=new UsernamePasswordAuthenticationToken(username,passwod); Authentication authentication=authenticationManager.authenticate(token); SecurityContextHolder.getContext().setAuthentication(authentication); session.setAttribute("SPRING_SECURITY_CONTEXT", SecurityContextHolder.getContext()); System.out.println("登录成功"); return "redirect:home.html"; }catch (Exception e){ e.printStackTrace(); return "login.html"; } } }
创建几个页面:在resources下创建文件夹html,用于存放html静态文件,
home.html
HOME welcome to Home
login.html
登录
admin.html
admin 你好,欢迎登陆,这是管理员界面,拥有/admin.html的访问权限才能访问
再定义几个错误页面
在html文件夹下创建一个error文件夹,在error文件夹中创建403.html,404.html,500.html;在程序遇到这些错误码时,会自动跳转到对应的页面
先启动一下项目,让spring-data-jpa反向生成一下表结构
再往数据库插入几条数据:
用户表的密码需要放密文,我们把我们的明文密码使用我们的密码encoder转一下:BCryptPasswordEncoder.encode("123");得到密文后存到数据库的password字段中
用户表:
资源表:即权限信息表
角色表:
角色权限中间表:
我们先不给用户配置角色,现在是空角色
启动Spring boot启动类,访问localhost:8083,检测到没登录会自动跳到登录页面,登录后自动跳转到home.html
访问admin.html,返回403页面,当前用户无权限访问
再将刚刚的角色分配给用户,再次访问
此时便可访问,大功告成!
2.部署CAS server
cas全称Central Authentication Service,翻译为:中央认证服务;从名字我们便可得知,这是一个独立的服务,主要负责用户登录凭证的验证;事实也是如此,cas有认证中心和client端,认证中心就是我们的cas server,负责用户凭证的验证,需要独立部署,cas client就是我们的各个相互信任的应用
我们从cas官网下载源码,从moudle中找到一个.war后缀的文件,将这个文件拷出来,
改一下文件名为:cas,放到一个Tomcat中,启动tomcat,(端口先改一下,如8081),在浏览器中访问localhost:8081/cas即可看到cas的登录界面
报了个警告,说我们没有配置ssl,也就是需要配置https,不过可以不用配置,
我们可以配置使用http:
设置cas server使用http非安全协议
主要有以下步骤:
1.WEB-INF/deployerConfigContext.xml中在
1. WEB-INF/spring-configuration/ticketGrantingTicketCookieGenerator.xml中将p:cookieSecure="true"修改为 p:cookieSecure="false"
2. WEB-INF/spring-configuration/warnCookieGenerator.xml中将p:cookieSecure="true"改为p:cookieSecure="false"
3. 在tomcat的server.xml中关闭8443端口,如下图
3.配置CAS client
在之前Spring security的基础上,我们加入cas认证
在pom.xml中加入依赖包:
org.springframework.security spring-security-cas
修改一下我们的UserDetailsServiceImpl类,让它实现AuthenticationUserDetailsService
UserDetailsServiceImpl:
package com.cas.client1.security; import com.cas.client1.entity.User; import com.cas.client1.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.cas.authentication.CasAssertionAuthenticationToken; import org.springframework.security.core.userdetails.AuthenticationUserDetailsService; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.core.userdetails.UsernameNotFoundException; import org.springframework.stereotype.Component; /** * @author Administrator */ @SuppressWarnings("ALL") @Component public class UserDetailsServiceImpl implements UserDetailsService, AuthenticationUserDetailsService{ @Autowired private UserService userService; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { User user = userService.findByUsername(username); return user; } /** * 实现AuthenticationUserDetailsService的方法, * 用于获取cas server返回的用户信息,再根据用户关键信息加载出用户在当前系统的权限 * @param token * @return * @throws UsernameNotFoundException */ public UserDetails loadUserDetails(CasAssertionAuthenticationToken token) throws UsernameNotFoundException { String name = token.getName(); System.out.println("获得的用户名:"+name); User user = userService.findByUsername(name); if (user==null){ throw new UsernameNotFoundException(name+"不存在"); } }
在application.properties文件中加上以下内容:
# cas服务器地址 cas.server.host.url=http://localhost:8081/cas # cas服务器登录地址 cas.server.host.login_url=${cas.server.host.url}/login # cas服务器登出地址 cas.server.host.logout_url=${cas.server.host.url}/logout?service=${app.server.host.url} # 应用访问地址 app.server.host.url=http://localhost:8083 # 应用登录地址 app.login.url=/login.do # 应用登出地址 app.logout.url=/logout
新增一个配置实体类
CasProperties
package com.cas.client1.config; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; @Component public class CasProperties { @Value("${cas.server.host.url}") private String casServerUrl; @Value("${cas.server.host.login_url}") private String casServerLoginUrl; @Value("${cas.server.host.logout_url}") private String casServerLogoutUrl; @Value("${app.server.host.url}") private String appServerUrl; @Value("${app.login.url}") private String appLoginUrl; @Value("${app.logout.url}") private String appLogoutUrl; /**get set方法略 */ }
再修改一下我们的Spring security配置类
package com.cas.client1.security; import com.cas.client1.config.CasProperties; import org.jasig.cas.client.session.SingleSignOutFilter; import org.jasig.cas.client.validation.Cas20ServiceTicketValidator; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.HttpMethod; import org.springframework.security.access.AccessDecisionManager; import org.springframework.security.access.AccessDecisionVoter; import org.springframework.security.access.vote.AffirmativeBased; import org.springframework.security.access.vote.RoleVoter; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.cas.ServiceProperties; import org.springframework.security.cas.authentication.CasAuthenticationProvider; import org.springframework.security.cas.web.CasAuthenticationEntryPoint; import org.springframework.security.cas.web.CasAuthenticationFilter; import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.builders.WebSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.web.access.intercept.FilterSecurityInterceptor; import org.springframework.security.web.authentication.logout.LogoutFilter; import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler; import java.util.ArrayList; import java.util.List; /** * Spring security配置 * @author youyp * @date 2018-8-10 */ @SuppressWarnings("ALL") @Configuration @EnableWebSecurity public class SpringSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private CasProperties casProperties; @Autowired private UserDetailsServiceImpl userDetailsService; @Autowired private SecurityMetaDataSource securityMetaDataSource; @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { super.configure(auth); auth.authenticationProvider(casAuthenticationProvider()); } @Override public void configure(WebSecurity web) throws Exception { web.ignoring().antMatchers("/js/**","/css/**","/img/**","/*.ico","/login.html", "/error","/login.do"); //web.ignoring().antMatchers("/js/**","/css/**","/img/**","/*.ico",,"/home"); //web.ignoring().antMatchers("/**"); // super.configure(web); } @Override protected void configure(HttpSecurity http) throws Exception { System.out.println("配置Spring security"); http.formLogin() //指定登录页是”/login” //.loginPage("/login.html").permitAll() //.loginProcessingUrl("/login.do").permitAll() //.defaultSuccessUrl("/home",true) //.permitAll() //登录成功后可使用loginSuccessHandler()存储用户信息,可选。 //.successHandler(loginSuccessHandler()).permitAll() .and() .logout().permitAll() //退出登录后的默认网址是”/home” //.logoutSuccessUrl("/home.html") //.permitAll() .invalidateHttpSession(true) .and() //登录后记住用户,下次自动登录,数据库中必须存在名为persistent_logins的表 .rememberMe() .tokenValiditySeconds(1209600) .and() .csrf().disable() //其他所有资源都需要认证,登陆后访问 .authorizeRequests().anyRequest().fullyAuthenticated(); http.exceptionHandling().authenticationEntryPoint(casAuthenticationEntryPoint()) .and() .addFilterAt(casAuthenticationFilter(),CasAuthenticationFilter.class) .addFilterBefore(casLogoutFilter(),LogoutFilter.class) .addFilterBefore(singleSignOutFilter(),CasAuthenticationFilter.class); /** * FilterSecurityInterceptor本身属于过滤器,不能在外面定义为@Bean, * 如果定义在外面,则这个过滤器会被独立加载到webContext中,导致请求会一直被这个过滤器拦截 * 加入到Springsecurity的过滤器链中,才会使它完整的生效 */ http.addFilterBefore(filterSecurityInterceptor(),FilterSecurityInterceptor.class); } /** * 注意:这里不能加@Bean注解 * @return * @throws Exception */ // @Bean public FilterSecurityInterceptor filterSecurityInterceptor() throws Exception { FilterSecurityInterceptor filterSecurityInterceptor=new FilterSecurityInterceptor(); filterSecurityInterceptor.setSecurityMetadataSource(securityMetaDataSource); filterSecurityInterceptor.setAuthenticationManager(authenticationManager()); filterSecurityInterceptor.setAccessDecisionManager(affirmativeBased()); return filterSecurityInterceptor; } /** * 认证入口 ** Note:浏览器访问不可直接填客户端的login请求,若如此则会返回Error页面,无法被此入口拦截 *
* @return */ @Bean public CasAuthenticationEntryPoint casAuthenticationEntryPoint(){ CasAuthenticationEntryPoint casAuthenticationEntryPoint=new CasAuthenticationEntryPoint(); casAuthenticationEntryPoint.setLoginUrl(casProperties.getCasServerLoginUrl()); casAuthenticationEntryPoint.setServiceProperties(serviceProperties()); return casAuthenticationEntryPoint; } @Bean public ServiceProperties serviceProperties() { ServiceProperties serviceProperties=new ServiceProperties(); serviceProperties.setService(casProperties.getAppServerUrl()+casProperties.getAppLoginUrl()); serviceProperties.setAuthenticateAllArtifacts(true); return serviceProperties; } // @Bean public CasAuthenticationFilter casAuthenticationFilter() throws Exception { CasAuthenticationFilter casAuthenticationFilter=new CasAuthenticationFilter(); casAuthenticationFilter.setAuthenticationManager(authenticationManager()); casAuthenticationFilter.setFilterProcessesUrl(casProperties.getAppLoginUrl()); // casAuthenticationFilter.setAuthenticationSuccessHandler( // new SimpleUrlAuthenticationSuccessHandler("/home.html")); return casAuthenticationFilter; } @Bean public CasAuthenticationProvider casAuthenticationProvider(){ CasAuthenticationProvider casAuthenticationProvider=new CasAuthenticationProvider(); casAuthenticationProvider.setAuthenticationUserDetailsService(userDetailsService); casAuthenticationProvider.setServiceProperties(serviceProperties()); casAuthenticationProvider.setTicketValidator(cas20ServiceTicketValidator()); casAuthenticationProvider.setKey("casAuthenticationProviderKey"); return casAuthenticationProvider; } @Bean public Cas20ServiceTicketValidator cas20ServiceTicketValidator() { return new Cas20ServiceTicketValidator(casProperties.getCasServerUrl()); } // @Bean public SingleSignOutFilter singleSignOutFilter(){ SingleSignOutFilter singleSignOutFilter=new SingleSignOutFilter(); singleSignOutFilter.setCasServerUrlPrefix(casProperties.getCasServerUrl()); singleSignOutFilter.setIgnoreInitConfiguration(true); return singleSignOutFilter; } // @Bean public LogoutFilter casLogoutFilter(){ LogoutFilter logoutFilter = new LogoutFilter(casProperties.getCasServerLogoutUrl(), new SecurityContextLogoutHandler()); logoutFilter.setFilterProcessesUrl(casProperties.getAppLogoutUrl()); return logoutFilter; } /** * 重写AuthenticationManager获取的方法并且定义为Bean * @return * @throws Exception */ @Override @Bean public AuthenticationManager authenticationManagerBean() throws Exception { return super.authenticationManagerBean(); } @Autowired public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception { //指定密码加密所使用的加密器为passwordEncoder() //需要将密码加密后写入数据库 //auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder()); //auth.eraseCredentials(false); } @Bean public BCryptPasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(4); } /** * 定义决策管理器,这里可直接使用内置的AffirmativeBased选举器, * 如果需要,可自定义,继承AbstractAccessDecisionManager,实现decide方法即可 * @return */ @Bean public AccessDecisionManager affirmativeBased(){ List> voters=new ArrayList<>(); voters.add(roleVoter()); System.out.println("正在创建决策管理器"); return new AffirmativeBased(voters); } /** * 定义选举器 * @return */ @Bean public RoleVoter roleVoter(){ //这里使用角色选举器 RoleVoter voter=new RoleVoter(); System.out.println("正在创建选举器"); voter.setRolePrefix("AUTH_"); System.out.println("已将角色选举器的前缀修改为AUTH_"); return voter; } @Bean public LoginSuccessHandler loginSuccessHandler() { return new LoginSuccessHandler(); } }
这里我们新增了几个filter,请注意,这几个filter定义时都不能配置@Bean注解,原因以上相同,这几个filter都要加入到springSecurity的FilterChain中,而不是直接加入到web容器的FilterChain中
再修改一下LoginController
package com.cas.client1.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.authentication.UsernamePasswordAuthenticationToken; import org.springframework.security.cas.web.CasAuthenticationFilter; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import javax.servlet.http.HttpSession; @SuppressWarnings("Duplicates") @Controller public class LoginController { @Autowired private AuthenticationManager authenticationManager; /** * 自定义登录地址 * @param username * @param password * @param session * @return */ @RequestMapping("login.do") public String login(String ticket, HttpSession session){ try { System.out.println("进入登录请求.........."); //cas单点登录的用户名就是:_cas_stateful_ ,用户凭证是server传回来的ticket String username = CasAuthenticationFilter.CAS_STATEFUL_IDENTIFIER; UsernamePasswordAuthenticationToken token=new UsernamePasswordAuthenticationToken(username,ticket); Authentication authentication=authenticationManager.authenticate(token); SecurityContextHolder.getContext().setAuthentication(authentication); session.setAttribute("SPRING_SECURITY_CONTEXT", SecurityContextHolder.getContext()); System.out.println("登录成功"); return "redirect:home.html"; }catch (Exception e){ e.printStackTrace(); return "login.html"; } } }
这时,之前负责登录的loginController不再是验证用户名和密码正不正确了,因为用户名密码的验证已经交给cas server了,LoginController的工作就是接收cas server重定向时传回来的ticket,验证ticket的有效性,如果没有异常,则会进入到UserDetailsServiceImpl中的loadUserDetails方法,并根据用户名加载用户权限等信息,然后我们再将用户信息存入Session,完成本地登录,本地登录之后,用户每次请求时,就不需要再次验证ticket了,而是验证Session
到这里,cas client已经配置完成,为了看清楚流程,我们以debug模式启动一下项目,在loginController的login方法开头打一个断点,打开浏览器调试模式(F12),切换到network看请求,在浏览器中输入:localhost:8083,浏览器会自动重定向到cas server 的登录页面,如下图:
我们输入一个数据库中有的用户名,再在密码栏中输入一次用户名,因为这里的cas server验证方式还没改,只要求用户名和密码相同就可通过验证,后面我会研究一下怎么修改cas server 的验证方式为数据库验证
如输入:用户名:user 密码:user
点击登录,验证成功后,我们看F12 network请求,发现浏览器发送了两个请求,一个是8081的,也就是cas server的,另外一个是8083的,也就是我们的client端的,如图:
另一个
因为我们在后台开了debug模式,打了断点,所以后面这个请求一直在pending状态,我们先看第一个请求的详细情况:
很明显的,这个请求发送了我们的用户名和密码,由此可知,这个请求的作用就是负责在cas server后台验证用户名的密码,验证成功后,会自动重定向到第二个请求
我们再来看第二个请求:
这个请求就是我们cas client所配置的登录地址,此时这个请求后面自动带上了一个名为ticket的参数,参数值是一串自动生成的随机字符串,由cas server生成的
我们再回到后台,没什么错误的话,我们可以看到LoginController接收到了这个参数,我们先在UserDetailsServiceImpl类的loadUserDetails方法的开头打一个断点,按F8让调试器跑走,此时,我们就可以看到调试器跳到了我们刚刚打的UserDetasServiceImpl的断点中,再看看参数
可以看出,我们接收到了cas server认证完ticket后传回来的用户名,我们根据用户名加载对应的权限,返回即可,此时我们再次按F8跳走
再回到界面,发现我们已经可以访问页面了:
下一步,就是验证多个应用之间是否能只登陆一次就不用再登陆了;
我们将当前项目拷贝一份,改名称为cas-client2(maven的groupId和artifactId),再修改一下端口为8082,,记得对应的cas配置也要改:
启动项目
先访问localhost:8082
发现它自动跳转到了8081的cas server
再打开另外一个浏览器标签,访问localhost:8083
发现它也自动跳到了cas的登录页面,我们先在这里输入账号密码登录:
登录成功后,我们再切换回刚刚没登录的8082的网页标签,刷新一下,
ok,8082也不用登陆了,大功告成!
源码地址:
https://github.com/yupingyou/casclient.git
另:Spring security原本默认有个/login和/logout的handler,(以前不是这个地址,不知道从哪个版本开始改了,以前好像是_spring_security_check,大概是这个,记不太清,我用了4以后就发现地址变了),但是我发现我访问/login的时候出现404,但/logout可以访问,没发现什么原因,后来我就自定义一个登陆了,也就是我配置的/login.do,代替了默认的/login
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