版权声明:本文为博主原创,无版权,未经博主允许可以随意转载,无需注明出处,随意修改或保持可作为原创! https://blog.csdn.net/z1729734271/article/details/78930088
为什么要实现单点登录?
单点登录( Single Sign-On , 简称 SSO )是目前比较流行的服务于企业业务整合的解决方案之一, SSO 使得在多个应用系统中,用户只需要 登录一次 就可以访问所有相互信任的应用系统。
本文从公司开发需求出发,用springboot+shiro+redis完成对会话的管理,实现单点登录。
下面贴出具体实现代码:
pom文件依赖:
<!-- 配置使用redis启动器 -->
<dependency>
<groupId>org.crazycake</groupId>
<artifactId>shiro-redis</artifactId>
<version>2.4.2.1-RELEASE</version>
</dependency>
yml文件(配置redis连接)
spring:
redis:
host: 127.0.0.1
port: 6379
max-idle: 8
min-idle: 0
max-active: 8
maxwait: -1
timeout: 0
isRedisCache: 1 #是否使用redis缓存
配置文件(采用springboot java配置):
shiroConfig.java配置(下面贴出的是需要添加修改的代码配置)
@Configuration
public class ShiroConfig {
private Logger logger = Logger.getLogger(ShiroConfig.class);
//取redis连接配置
@Value("${spring.redis.host}")
private String host;
@Value("${spring.redis.port}")
private int port;
@Value("${spring.redis.timeout}")
private int timeout;
@Value("${spring.redis.isRedisCache}")
private int isRedisCache;
@Bean
public EhCacheManager getEhCacheManager() {
EhCacheManager em = new EhCacheManager();
em.setCacheManagerConfigFile("classpath:config/ehcache.xml");
return em;
}
@Bean
UserRealm userRealm(EhCacheManager cacheManager) {
UserRealm userRealm = new UserRealm();
// userRealm.setCacheManager(cacheManager);可以注释,下面重复了。
return userRealm;
}
/**
* 配置shiro redisManager
*
* @return
*/
@Bean
public RedisManager redisManager() {
RedisManager redisManager = new RedisManager();
redisManager.setHost(host);
redisManager.setPort(port);
redisManager.setExpire(1800);// 配置过期时间
logger.info("配置redis连接设置##########" + host + ":::" + port);
return redisManager;
}
/**
* cacheManager 缓存 redis实现
*
* @return
*/
public RedisCacheManager cacheManager() {
RedisCacheManager redisCacheManager = new RedisCacheManager();
redisCacheManager.setRedisManager(redisManager());
return redisCacheManager;
}
@Bean
SessionDAO sessionDAO() {
logger.info("是否使用redis缓存");
if (1 == isRedisCache) {
RedisSessionDAO redisSessionDAO = new RedisSessionDAO();
redisSessionDAO.setRedisManager(redisManager());
logger.info("设置redisSessionDAO");
return redisSessionDAO;
} else {
MemorySessionDAO sessionDAO = new MemorySessionDAO();
logger.info("设置MemorySessionDAO");
return sessionDAO;
}
}
@Bean
public SessionManager sessionManager() {
DefaultWebSessionManager sessionManager = new DefaultWebSessionManager();
Collection<SessionListener> listeners = new ArrayList<SessionListener>();
listeners.add(new BDSessionListener());
sessionManager.setSessionListeners(listeners);
sessionManager.setSessionDAO(sessionDAO());
return sessionManager;
}
@Bean
SecurityManager securityManager(UserRealm userRealm) {
DefaultWebSecurityManager manager = new DefaultWebSecurityManager();
manager.setRealm(userRealm);
if (1 != isRedisCache) {
manager.setCacheManager(getEhCacheManager());
logger.info("设置getEhCacheManager");
}
logger.info("设置sessionManager");
manager.setSessionManager(sessionManager());
return manager;
}
......//其他配置默认
}
这样配置就可以了,接下来启动看看,不出所料,报错了,当然不是所有人都是,得看个人配置:
错误:
1、获取不到redis连接配置:
贴出日志
2017-12-29 11:35:17.550 INFO 7196 --- [restartedMain] com.bootdo.system.config.ShiroConfig : 设置getEhCacheManager
2017-12-29 11:35:17.550 INFO 7196 --- [restartedMain] com.bootdo.system.config.ShiroConfig : 设置sessionManager
2017-12-29 11:35:17.552 INFO 7196 --- [restartedMain] com.bootdo.system.config.ShiroConfig : 是否使用redis缓存
2017-12-29 11:35:17.552 INFO 7196 --- [restartedMain] com.bootdo.system.config.ShiroConfig : 设置MemorySessionDAO
2017-12-29 11:35:19.056 INFO 7196 --- [restartedMain] com.bootdo.system.config.ShiroConfig : 配置redis连接设置##########null:::0
获取不到redis连接配置!!!
解决方式:
shiroConfig里修改
@Bean("lifecycleBeanPostProcessor")
public static LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
return new LifecycleBeanPostProcessor();
}
参考:http://blog.csdn.net/z1729734271/article/details/78930292
2、类型转换错误:
2017-12-29 11:36:43.079 ERROR 7956 --- [http-nio-80-exec-8] c.b.common.exception.BDExceptionHandler : com.bootdo.system.domain.UserDO cannot be cast to com.bootdo.system.domain.UserDO
java.lang.ClassCastException: com.bootdo.system.domain.UserDO cannot be cast to com.bootdo.system.domain.UserDO
at com.bootdo.common.utils.ShiroUtils.getUser(ShiroUtils.java:13) ~[classes/:na]
at com.bootdo.common.controller.BaseController.getUser(BaseController.java:10) ~[classes/:na]
at com.bootdo.common.controller.BaseController.getUserId(BaseController.java:14) ~[classes/:na]
at com.bootdo.system.controller.LoginController.index(LoginController.java:43) ~[classes/:na]
解决方式:
注释掉pom文件里的热部署依赖,得以解决
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
参考:http://blog.csdn.net/z1729734271/article/details/78930708
这样我们springboot-shiro-redis缓存实现单点登录就已经完成了,期间遇到的问题也顺利解决,简单记录下,有不对的地方或者有不清楚的地方小伙伴可以留言讨论~