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package cn.hutool.aop.interceptor;
import cn.hutool.aop.aspects.Aspect;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* Spring-cglib实现的动态代理切面
*
* @author looly
*/
public class SpringCglibInterceptor implements MethodInterceptor, Serializable {
private static final long serialVersionUID = 1L;
private final Object target;
private final Aspect aspect;
/**
* 构造
*
* @param target 被代理对象
* @param aspect 切面实现
*/
public SpringCglibInterceptor(Object target, Aspect aspect) {
this.target = target;
this.aspect = aspect;
}
/**
* 获得目标对象
*
* @return 目标对象
*/
public Object getTarget() {
return this.target;
}
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
final Object target = this.target;
Object result = null;
// 开始前回调
if (aspect.before(target, method, args)) {
try {
// result = proxy.invokeSuper(obj, args);
result = proxy.invoke(target, args);
} catch (Throwable e) {
Throwable throwable = e;
if(throwable instanceof InvocationTargetException){
throwable = ((InvocationTargetException) throwable).getTargetException();
}
// 异常回调（只捕获业务代码导致的异常，而非反射导致的异常）
if (aspect.afterException(target, method, args, throwable)) {
throw e;
}
}
}
// 结束执行回调
if (aspect.after(target, method, args, result)) {
return result;
}
return null;
}
}