spring-session自定义cookie中的sessionId名称(基于springboot)

为何要修改sessionId名称

如果多个应用系统，访问使用同一个域名或IP,不同端口时，在同一个浏览器登陆这些系统系统，它们之间会出现用户会话会出现覆盖问题，即登录到其中一个应用系统，其他应用系统出现重新登陆现象；

具体操作

经过分析SpringHttpSessionConfiguration的源码（这里不带大家对源码进行分析了），可归纳出以下两种方式可修改sessionId名称

1、定义相关的Bean，SpringHttpSessionConfiguration会自动将这些Bean注入到自身的配置中；

 

@Configuration
public class SpringSessionBeanConfiguration {

    @Value("${spring.session.cookieName:'JSESSIONID'}")
    private String cookieName;



    //Cookie配置
    @Bean
    public CookieSerializer cookieSerializer(){
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();
        cookieSerializer.setCookieName(cookieName);//sessionId名称
        return  cookieSerializer;
    }

    //HttpSessionId配置
    @Bean
    public HttpSessionIdResolver httpSessionIdResolver(){
        CookieHttpSessionIdResolver cookieHttpSessionIdResolver = new CookieHttpSessionIdResolver();
        cookieHttpSessionIdResolver.setCookieSerializer(cookieSerializer());
        return cookieHttpSessionIdResolver;
    }
}

2、自定义配置类并继承SpringHttpSessionConfiguration，然后直接对配置类中的属性进行修改，由于这里我用的是redis存储session,此时我直接继承RedisHttpSessionConfiguration（SpringHttpSessionConfiguration的子类）

@Configuration
public class RedisSessionConfiguration extends RedisHttpSessionConfiguration  {

    @Value("${spring.session.cookieName:'JSESSIONID'}")
    private String cookieName;


    @PostConstruct
    @Override
    public void init() {
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();
        cookieSerializer.setCookieName(cookieName);//sessionId名称
        CookieHttpSessionIdResolver cookieHttpSessionIdResolver = new CookieHttpSessionIdResolver();
        cookieHttpSessionIdResolver.setCookieSerializer(cookieSerializer);
        super.setHttpSessionIdResolver(cookieHttpSessionIdResolver);
        super.setCookieSerializer(cookieSerializer);
    }
}

这里面我遇到有一个坑，要在这个地方特别说明下：在第二种方案中的配置类中，如果在该配置类中定义@Bean,则在@Bean的方法体中无法获取application.yml(properties)中的属性值，具体样例代码如下：

@Configuration
public class RedisSessionConfiguration extends RedisHttpSessionConfiguration  {

    @Value("${spring.session.cookieName:'JSESSIONID'}")
    private String cookieName;


    //Cookie配置
    @Bean
    public CookieSerializer cookieSerializer(){
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();
        //此处无法获取到通过@Value注入的cookieName的值
        cookieSerializer.setCookieName(cookieName);//sessionId名称
        return  cookieSerializer;
    }

    //HttpSessionId配置
    @Bean
    public HttpSessionIdResolver httpSessionIdResolver(){
        CookieHttpSessionIdResolver cookieHttpSessionIdResolver = new CookieHttpSessionIdResolver();
        cookieHttpSessionIdResolver.setCookieSerializer(cookieSerializer());
        return cookieHttpSessionIdResolver;
    }


    @PostConstruct
    @Override
    public void init() {
        DefaultCookieSerializer cookieSerializer = new DefaultCookieSerializer();
        //此处可以获取到cookieName的值
        cookieSerializer.setCookieName(cookieName);//sessionId名称
        CookieHttpSessionIdResolver cookieHttpSessionIdResolver = new CookieHttpSessionIdResolver();
        cookieHttpSessionIdResolver.setCookieSerializer(cookieSerializer);
        super.setHttpSessionIdResolver(cookieHttpSessionIdResolver);
        super.setCookieSerializer(cookieSerializer);
    }
}