SpringbootCache @CacheEvict 无法模糊删除
用@CacheEvict删除缓存只能删除指定key的缓存，有些情况需要根据前缀删除所有key的时候，用@CacheEvict就做不到了，所以我们自定义一个@CacheRemove来处理根据前缀模糊删除所有cache（支持Spring EL表达式）
以下代码适用于Redis
添加依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
启动类加上 @EnableAspectJAutoProxy
@CacheRemove 代码
package com.marssvn.utils.annotation.cache;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.METHOD;
@Target({METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface CacheRemove {
String[] value() default {};
}CacheRemoveAspect AOP实现类代码
package com.marssvn.utils.annotation.cache.aspect;
import com.marssvn.utils.annotation.cache.CacheRemove;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.LocalVariableTableParameterNameDiscoverer;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.lang.reflect.Method;
import java.util.Set;
@Aspect
@Component
public class CacheRemoveAspect {
@Resource
private StringRedisTemplate stringRedisTemplate;
private Logger logger = LoggerFactory.getLogger(this.getClass());
@AfterReturning("@annotation(com.marssvn.utils.annotation.cache.CacheRemove)")
public void remove(JoinPoint point) {
Method method = ((MethodSignature) point.getSignature()).getMethod();
CacheRemove cacheRemove = method.getAnnotation(CacheRemove.class);
String[] keys = cacheRemove.value();
for (String key : keys) {
if (key.contains("#"))
key = parseKey(key, method, point.getArgs());
Set<String> deleteKeys = stringRedisTemplate.keys(key);
stringRedisTemplate.delete(deleteKeys);
logger.info("cache key: " + key + " deleted");
}
}
private String parseKey(String key, Method method, Object [] args){
LocalVariableTableParameterNameDiscoverer u =
new LocalVariableTableParameterNameDiscoverer();
String[] paraNameArr = u.getParameterNames(method);
ExpressionParser parser = new SpelExpressionParser();
StandardEvaluationContext context = new StandardEvaluationContext();
for (int i = 0; i < paraNameArr.length; i++) {
context.setVariable(paraNameArr[i], args[i]);
}
return parser.parseExpression(key).getValue(context, String.class);
}
}Service中的调用代码
@Override
@Transactional
@CacheRemove({"repository.list::*", "'repository::id=' + #id", "'repository.tree::id=' + #id + '*'"})
public void deleteRepositoryById(int id) {
// business code
}@CacheEvict根据缓存名称模糊删除
@CacheEvict(cacheNames = "likename" ,allEntries=true)allEntries=true开启全匹配cacheNames填写 模糊删除的name
看源码可知
以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
