redisTemplate序列化中ObjectMapper.DefaultTyping.NON_FINAL漏洞的解决

第一种方法：使用默认的springboot方法
@Bean(name = "redisTemplate")
public RedisTemplate<String, Object> redisTemplate(JedisConnectionFactory factory) {
    RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(redisConnectionFactory());
    redisTemplate.afterPropertiesSet();
    return redisTemplate;
}

这种方法在redisclient客户端保存key的是乱码；弊端，指定的key在数据库中存的是乱码，不能可视化，不利于跨系统利用redis。

第二种方法

@Bean(name = "redisTemplate")
public RedisTemplate<String, Object> redisTemplate(JedisConnectionFactory factory) {
    RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(redisConnectionFactory());
    setMySerializer(redisTemplate);
    setRedisTemplate(redisTemplate);
    redisTemplate.afterPropertiesSet();
    return redisTemplate;
}

private void setMySerializer(RedisTemplate template) {
    Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
            Object.class);
    ObjectMapper om = new ObjectMapper();
    om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
    om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
    jackson2JsonRedisSerializer.setObjectMapper(om);
    template.setKeySerializer(template.getStringSerializer());
    template.setValueSerializer(jackson2JsonRedisSerializer);
}

这种方法om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL)这行会被sona扫描出漏洞

去掉这行，会带来意想不到的问题，比如，时间格式，存在数据库中是long，但是获取key回转的时候会有问题

第三种方法：

验证好使：
@Bean(name = "redisTemplate")
public RedisTemplate<String, Object> redisTemplate(JedisConnectionFactory factory) {
    RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
    redisTemplate.setConnectionFactory(redisConnectionFactory());
    setRedisTemplate(redisTemplate);
    redisTemplate.afterPropertiesSet();
    return redisTemplate;
}
public void setRedisTemplate(RedisTemplate redisTemplate) {
    //        JdkSerializationRedisSerializer jdkSerializationRedisSerializer = new JdkSerializationRedisSerializer();
    GenericJackson2JsonRedisSerializer jackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
    // 设置值（value）的序列化采用FastJsonRedisSerializer。
    redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
    //        redisTemplate.setHashValueSerializer(fastJsonRedisSerializer);
    // 设置键（key）的序列化采用StringRedisSerializer。
    redisTemplate.setKeySerializer(new StringRedisSerializer());
    redisTemplate.setHashKeySerializer(new StringRedisSerializer());
    redisTemplate.afterPropertiesSet();
}

sona扫描没有bug