private String getRealCacheKey(Cacheable cache, String value) {
StringBuffer sb = new StringBuffer();
if (!cache.cacheClass().equals(Void.class)) {
sb.append(cache.cacheClass().getName()).append(".");
}
if (!StringUtils.isEmpty(cache.prefix())) {
sb.append(cache.prefix()).append(".");
}
sb.append(value);
return sb.toString();
}
/**
* 定义缓存逻辑
*
* @throws Throwable
*/
@Around("@annotation(cn.ichano.common.cache.Cacheable)")
public Object cache(ProceedingJoinPoint pjp) throws Throwable {
Object result = null;
Boolean cacheEnable = Env.getConfig().getBoolean("common.cache.enable", true);
Method method = getMethod(pjp);
// 如果参数是null，就无法取到对应的参数。
if (method == null) {
return pjp.proceed();
}
Cacheable cacheable = method.getAnnotation(Cacheable.class);
LOGGER.debug("execute CacheAspect, invoke method:{} .", method.getName());
// 判断是否开启缓存
if (!cacheEnable || cacheable == null) {
return pjp.proceed();
}
// CacheKey cacheKey = findAnnotation(method);
String realCacheKey = getRealCacheKey(pjp, cacheable);
LOGGER.debug(
"execute CacheAspect, invoke method:{},find cache key:{}", method.getName(), realCacheKey);
if (StringUtils.isEmpty(realCacheKey)) {
return pjp.proceed();
}
// 获取方法的返回类型,让缓存可以返回正确的类型
// 使用redis 的hash进行存取，易于管理
if (cacheable.type().equals(Cacheable.Type.DELETE)) {
lcCache.delValue(realCacheKey);
cache.remove(realCacheKey);
return pjp.proceed();
} else if (cacheable.type().equals(Cacheable.Type.QUERY)) {
result = lcCache.getValue(realCacheKey);
if (result != null) {
return result;
}
result = cache.get(realCacheKey);
if (result != null) {
lcCache.setValue(realCacheKey, result);
LOGGER.debug("cache query result. key:{}", realCacheKey);
return result;
} else {
result = pjp.proceed();
LOGGER.debug("un find cache query result. key:{}", realCacheKey);
cache.set(realCacheKey, result, cacheable.expireTime(), TimeUnit.SECONDS);
boolean as = cache.hasKey(realCacheKey);
lcCache.setValue(realCacheKey, result);
}
} else { // update
// 更新或者查询失败，都需要再次设置值
result = pjp.proceed();
Object[] args = pjp.getArgs();
if (args.length == 1) {
lcCache.setValue(realCacheKey, args[0]);
cache.set(realCacheKey, args[0], cacheable.expireTime(), TimeUnit.SECONDS);
LOGGER.debug("cache update entity. key:{},value:{}", realCacheKey, args[0]);
} else {
for (Object arg : args) {
if (arg.getClass().equals(cacheable.cacheClass())) {
lcCache.setValue(realCacheKey, arg);
cache.set(realCacheKey, arg, cacheable.expireTime(), TimeUnit.SECONDS);
LOGGER.debug("cache update entity. key:{},value:{}", realCacheKey, arg);
break;
}
}
}
}
return result;
}
/**
* 获取缓存的key值
*
* @param pjp
* @param cache
* @return
*/
private String getRealCacheKey(ProceedingJoinPoint pjp, Cacheable cache) {
String field = cache.field();
String value = getSpelKey(pjp, field);
return getRealCacheKey(cache, value);
}