spring cache key generator why not use spel key？

Question

keyGenerator not work on spel key,may I custom keyGenerator for all key contains @Cacheable(key="#spelKey")

I found code: org.springframework.cache.interceptor.CacheAspectSupport

    protected Object generateKey(Object result) {
        if (StringUtils.hasText(this.metadata.operation.getKey())) {
            EvaluationContext evaluationContext = this.createEvaluationContext(result);
            return CacheAspectSupport.this.evaluator.key(this.metadata.operation.getKey(), this.methodCacheKey, evaluationContext);
        } else {
            return this.metadata.keyGenerator.generate(this.target, this.metadata.method, this.args);
        }
    }

change code like：

    protected Object generateKey(Object result) {
        if (StringUtils.hasText(this.metadata.operation.getKey())) {
            EvaluationContext evaluationContext = createEvaluationContext(result);
            return this.metadata.keyGenerator.generate(this.target, this.metadata.method, evaluator.key(this.metadata.operation.getKey(), this.methodCacheKey, evaluationContext));
        }
        return this.metadata.keyGenerator.generate(this.target, this.metadata.method, this.args);
    }

Answer 1

I am not sure what you're trying to do with #spelKey but it's fairly documented. If you want to do something complex, I'd implement a KeyGenerator instead, see the documentation