基于springSession不同项目的单点登陆

 单点登录（Single Sign On），简称为 SSO，是目前比较流行的企业业务整合的解决方案之一。SSO的定义是在多个应用系统中，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。目前市面上有很多实现单点登录的方案，例如CAS,Token颁发校验，Cookie+域名+路径配置，在这里主要是想介绍一下第三种方案的实现方式。

    此篇文章支持单域名下的二级域名的单点登陆

    开发状态：当前公司项目是一个单体垂直架构，只是集成了了Spring-Session和Redis。

    Session:在计算机中，尤其是在网络应用中，称为“会话控制”。Session 对象存储特定用户会话所需的属性及配置信息。这样，当用户在应用程序的 Web 页之间跳转时，存储在 Session 对象中的变量将不会丢失，而是在整个用户会话中一直存在下去。当用户请求来自应用程序的 Web 页时，如果该用户还没有会话，则 Web 服务器将自动创建一个 Session 对象。当会话过期或被放弃后，服务器将终止该会话。Session 对象最常见的一个用法就是存储用户的首选项。例如，如果用户指明不喜欢查看图形，就可以将该信息存储在 Session 对象中。有关使用 Session 对象的详细信息，请参阅“ASP 应用程序”部分的“管理会话”。注意 会话状态仅在支持 cookie 的浏览器中保留。

   

   

  maven

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>1.3.2.RELEASE</version>
</dependency>

  springboot   中   spring-Session 的注解配置

1.稍显复杂的做法  比较完善

@Configuration
@EnableRedisHttpSession 
public class SessionConfig {
    @Bean
    public JedisConnectionFactory connectionFactory() {
        JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();
        jedisConnectionFactory.setHostName("***"); // 默认localhost
        jedisConnectionFactory.setPort(****); // 默认6379
        jedisConnectionFactory.setDatabase(0); // 默认0
        jedisConnectionFactory.afterPropertiesSet();
        return jedisConnectionFactory;
        }

        @Bean
    public CookieSerializer cookieSerializer(ServletContext servletContext, MySessionCookieConfig sessionCookieConfig) {
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();
        if (servletContext != null) {
            if (sessionCookieConfig != null) {
                if (sessionCookieConfig.getName() != null)
                    cookieSerializer.setCookieName(sessionCookieConfig.getName());
                if (sessionCookieConfig.getDomain() != null)
                    cookieSerializer.setDomainName(sessionCookieConfig.getDomain());
                if (sessionCookieConfig.getPath() != null)
                    cookieSerializer.setCookiePath(sessionCookieConfig.getPath());
                if (sessionCookieConfig.getMaxAge() != -1)
                    cookieSerializer.setCookieMaxAge(sessionCookieConfig.getMaxAge());
                if (sessionCookieConfig.getDomainPattern() != null)
                    cookieSerializer.setDomainNamePattern(sessionCookieConfig.getDomainPattern());
                if (sessionCookieConfig.getJvmRoute() != null)
                    cookieSerializer.setJvmRoute(sessionCookieConfig.getJvmRoute());
                cookieSerializer.setUseSecureCookie(sessionCookieConfig.isSecure());
                cookieSerializer.setUseBase64Encoding(sessionCookieConfig.isUseBase64Encoding());
                cookieSerializer.setUseHttpOnlyCookie(sessionCookieConfig.isHttpOnly());
            }
        }
        if (ClassUtils.isPresent(
                "org.springframework.security.web.authentication.RememberMeServices",
                null)) {
            boolean usesSpringSessionRememberMeServices = !ObjectUtils
                    .isEmpty(this.context
                            .getBeanNamesForType(SpringSessionRememberMeServices.class));
            if (usesSpringSessionRememberMeServices) {
                cookieSerializer.setRememberMeRequestAttribute(
                        SpringSessionRememberMeServices.REMEMBER_ME_LOGIN_ATTR);
            }
        }
        return cookieSerializer;
    }

    private ApplicationContext context;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.context = applicationContext;
    }
}

import org.springframework.stereotype.Component;

/**
 * @author pontus
 * @date create in 17:33 2018/10/9
 * @description
 */
@Component
public class MyDefaultSessionCookieConfig implements MySessionCookieConfig {

    private String name;
    private String path;
    private String domain;
    private String comment;
    private int maxAge = -1;
    private String domainPattern;
    private String jvmRoute;
    private boolean httpOnly = true;
    private boolean secure = false;
    private boolean useBase64Encoding = false;

    @Override
    public String getDomainPattern() {
        return domainPattern;
    }

    @Override
    public void setDomainPattern(String domainPattern) {
        this.domainPattern = domainPattern;
    }

    @Override
    public String getJvmRoute() {
        return jvmRoute;
    }

    @Override
    public void setJvmRoute(String jvmRoute) {
        this.jvmRoute = jvmRoute;
    }

    @Override
    public boolean isUseBase64Encoding() {
        return useBase64Encoding;
    }

    @Override
    public void setUseBase64Encoding(boolean useBase64Encoding) {
        this.useBase64Encoding = useBase64Encoding;
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String getPath() {
        return path;
    }

    @Override
    public void setPath(String path) {
        this.path = path;
    }

    @Override
    public String getDomain() {
        return domain;
    }

    @Override
    public void setDomain(String domain) {
        this.domain = domain;
    }

    @Override
    public String getComment() {
        return comment;
    }

    @Override
    public void setComment(String comment) {
        this.comment = comment;
    }

    @Override
    public boolean isHttpOnly() {
        return httpOnly;
    }

    @Override
    public void setHttpOnly(boolean httpOnly) {
        this.httpOnly = httpOnly;
    }

    @Override
    public boolean isSecure() {
        return secure;
    }

    @Override
    public void setSecure(boolean secure) {
        this.secure = secure;
    }

    @Override
    public int getMaxAge() {
        return maxAge;
    }

    @Override
    public void setMaxAge(int maxAge) {
        this.maxAge = maxAge;
    }
}



import javax.servlet.SessionCookieConfig;

/**
 * @author pontus
 * @date create in 17:12 2018/10/9
 * @description
 */
public interface MySessionCookieConfig extends SessionCookieConfig {

    String getDomain();

    String getDomainPattern();

    void setDomainPattern(String domainPattern);

    String getJvmRoute();

    void setJvmRoute(String jvmRoute);

    boolean isUseBase64Encoding();

    void setUseBase64Encoding(boolean useBase64Encoding);

}

2.简单做法   直接设置（setCookieName，setCookiePath，setDomainName）

import com.xiaotu.util.Redis.RedisParam;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
import org.springframework.session.web.http.CookieSerializer;
import org.springframework.session.web.http.DefaultCookieSerializer;

/**
 * @author pontus
 * @date create in 14:14 2018/10/9
 * @description
 */
@Configuration
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 1800)
public class HttpSessionConfig implements ApplicationContextAware {

    @Autowired
    RedisParam redisParam;

    @Bean
    public JedisConnectionFactory connectionFactory() {
        JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();
        jedisConnectionFactory.setHostName(redisParam.getIp()); // 默认localhost
        jedisConnectionFactory.setPort(redisParam.getPort()); // 默认6379
        jedisConnectionFactory.setDatabase(redisParam.getDatabase()); // 默认0
        jedisConnectionFactory.setPassword(redisParam.getPassword());
        jedisConnectionFactory.afterPropertiesSet();
        return jedisConnectionFactory;
    }


    @Bean
    public CookieSerializer cookieSerializer() {
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();
        cookieSerializer.setCookieName("*****");
        cookieSerializer.setDomainName("******");
        cookieSerializer.setCookiePath("/");
        cookieSerializer.setUseBase64Encoding(false);

        return cookieSerializer;
    }

    private ApplicationContext context;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.context = applicationContext;
    }
}