springboot怎么初始化多个hutool布隆过滤器并使用不同初始化后的布隆过滤器
时间: 2024-02-23 21:51:57 浏览: 72
在SpringBoot中初始化多个Hutool布隆过滤器可以通过创建多个Bean来实现。以下是示例代码:
1. 首先,在application.yml文件中添加布隆过滤器的配置:
```
spring:
hutool:
bloom-filter:
filters:
filter1:
expectedInsertions: 10000
fpp: 0.01
filter2:
expectedInsertions: 5000
fpp: 0.02
```
2. 然后,在SpringBoot的配置类中创建两个Bean,分别用于初始化两个布隆过滤器:
```
@Configuration
public class BloomFilterConfig {
@Bean(name = "filter1")
public BloomFilter<String> filter1() {
BloomFilterSetting setting = SpringUtil.getBean("filter1", BloomFilterSetting.class);
return new BloomFilter<>(setting.getExpectedInsertions(), setting.getFpp());
}
@Bean(name = "filter2")
public BloomFilter<String> filter2() {
BloomFilterSetting setting = SpringUtil.getBean("filter2", BloomFilterSetting.class);
return new BloomFilter<>(setting.getExpectedInsertions(), setting.getFpp());
}
}
```
3. 最后,在需要使用布隆过滤器的地方,注入对应的Bean即可:
```
@Service
public class UserServiceImpl implements UserService {
@Autowired
@Qualifier("filter1")
private BloomFilter<String> filter1;
@Autowired
@Qualifier("filter2")
private BloomFilter<String> filter2;
@Override
public boolean containsName(String name) {
return filter1.contains(name) || filter2.contains(name);
}
// ...
}
```
以上代码中,我们通过`@Qualifier`注解指定了要注入的Bean的名称,从而使用不同初始化后的布隆过滤器。
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