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");
- }
- }
-
- /**
- * parseKey from SPEL
- */
- 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
- /**
- * Delete repository
- *
- * @param id repositoryId
- */
- @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w3xue。