Initializingbean interface and examples

Definition

InitializingBean Interface for bean Provides a way to initialize methods , It only includes afterPropertiesSet Method , All classes that inherit this interface , Initializing bean This method will be implemented when .

 

Example  

Load the full amount of data into the bloom filter

@Slf4j
@Configuration
public class BloomFilterConfig implements InitializingBean{

    @Autowired
    private PmsProductService productService;

    @Autowired
    private RedisTemplate template;

    @Bean
    public BloomFilterHelper<String> initBloomFilterHelper() {
        return new BloomFilterHelper<>((Funnel<String>) (from, into) -> into.putString(from, Charsets.UTF_8)
                .putString(from, Charsets.UTF_8), 1000000, 0.01);
    }

    /**
     *  The bloon filter bean Inject 
     * @return
     */
    @Bean
    public BloomRedisService bloomRedisService(){
        BloomRedisService bloomRedisService = new BloomRedisService();
        bloomRedisService.setBloomFilterHelper(initBloomFilterHelper());
        bloomRedisService.setRedisTemplate(template);
        return bloomRedisService;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        List<Long> list = productService.getAllProductId();
        log.info(" Load the product into the bloom filter ,size:{}",list.size());
        if(!CollectionUtils.isEmpty(list)){
            list.stream().forEach(item->{
                //LocalBloomFilter.put(item);
                bloomRedisService().addByBloomFilter(RedisKeyPrefixConst.PRODUCT_REDIS_BLOOM_FILTER,item+"");
            });
        }
    }
}