一个Spring AOP的坑！很多人都犯过！
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Cacheable {
/**
* 策略名称，需要保证
* @return
*/
public String keyName();
/**
* 超时时长，单位：秒
* @return
*/
public int expireTime();
}
@Aspect
@Component
public class StrategyCacheAspect {
private static final Logger LOGGER = LoggerFactory.getLogger(FacadeAspect.class);
@Around("@annotation(com.hollis.cache.StrategyCache)")
public Object cache(ProceedingJoinPoint pjp) throws Throwable {
// 先查缓存，如果缓存中有值，直接返回。如果缓存中没有，先执行方法，再将返回值存储到缓存中。
}
}
@Component
public class StrategyService extends BaseStrategyService {
public PricingResponse getFactor(Map<String, String> pricingParams) {
// 做一些参数校验，以及异常捕获相关的事情
return this.loadFactor(tieredPricingParams);
}
@Override
@StrategyCache(keyName = "key0001", expireTime = 60 * 60 * 2)
private PricingResponse loadFactor(Map<String, String> pricingParams) {
//代码执行
}
}
public class SimplePojo implements Pojo {
public void foo() {
// this next method invocation is a direct call on the 'this' reference
this.bar();
}
public void bar() {
// some logic...
}
}
public class Main {
public static void main(String[] args) {
Pojo pojo = new SimplePojo();
// this is a direct method call on the 'pojo' reference
pojo.foo();
}
}
public class Main {
public static void main(String[] args) {
ProxyFactory factory = new ProxyFactory(new SimplePojo());
factory.addInterface(Pojo.class);
factory.addAdvice(new RetryAdvice());
Pojo pojo = (Pojo) factory.getProxy();
// this is a method call on the proxy!
pojo.foo();
}
}
获取代理对象进行调用
@Component
public class StrategyService{
public PricingResponse getFactor(Map<String, String> pricingParams) {
// 做一些参数校验，以及异常捕获相关的事情
// 这里不使用this.loadFactor而是使用AopContext.currentProxy()调用，目的是解决AOP代理不支持方法自调用的问题
if (AopContext.currentProxy() instanceof StrategyService) {
return ((StrategyService)AopContext.currentProxy()).loadFactor(tieredPricingParams);
} else {
// 部分实现没有被代理过，则直接进行自调用即可
return loadFactor(tieredPricingParams);
}
}
@Override
@StrategyCache(keyName = "key0001", expireTime = 60 * 60 * 2)
private PricingResponse loadFactor(Map<String, String> oricingParams) {
//代码执行
}
}
<aop:aspectj-autoproxy proxy-target-class="true" expose-proxy="true"/>
@EnableAspectJAutoProxy(exposeProxy = true)
public class Application {
}
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