spring boot data redis

baipeng 技术 , , , 评论

com.fasterxml.jackson.databind.JsonMappingException: failed to lazily initialize a collection of role: com.ln.baseframe.security.entity.Module.modules, could not initialize proxy - no Session

异常场景：
使用注解缓存 查询的对象 有关联查询，集合为空，添加Redis的时候报错。。

解决办法：
cacha config
加入依赖

<dependency>  
    <groupId>com.fasterxml.jackson.datatype</groupId>  
    <artifactId>jackson-datatype-hibernate4</artifactId>  
    <version>2.3.2</version>  
</dependency>

	@Bean
	public RedisTemplate<String, String> redisTemplate(
			RedisConnectionFactory factory) {
		StringRedisTemplate template = new StringRedisTemplate(factory);
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		om.registerModule(new Hibernate4Module());
		jackson2JsonRedisSerializer.setObjectMapper(om);
		template.setValueSerializer(jackson2JsonRedisSerializer);
		template.afterPropertiesSet();
		return template;
	}