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/**
 * Copyright (c) 2011-2020, hubin ([email protected]).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.baomidou.framework.aop;

import java.lang.reflect.Method;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;

import com.baomidou.framework.annotations.Log;

/**
 * 
 * 日志切面处理类
 * 
 * 
 * @author hubin
 * @Date 2016-05-09
 */
public class LogAspect {

	/**
	 * 日志切入点
	 */
	private LogPoint logPoint;

	/**
	 * 保存系统操作日志
	 *
	 * @param joinPoint
	 *            连接点
	 * @return 方法执行结果
	 * @throws Throwable
	 *             调用出错
	 */
	@Around(value = "@annotation(com.baomidou.framework.annotations.Log)")
	public Object saveLog(ProceedingJoinPoint joinPoint) throws Throwable {
		/**
		 * 解析Log注解
		 */
		String methodName = joinPoint.getSignature().getName();
		Method method = currentMethod(joinPoint, methodName);
		Log log = method.getAnnotation(Log.class);

		/**
		 * 日志入库
		 */
		if (log != null) {
			logPoint.saveLog(joinPoint, methodName, log.value());
		}

		/**
		 * 方法执行
		 */
		return joinPoint.proceed();
	}

	/**
	 * 获取当前执行的方法
	 *
	 * @param joinPoint
	 *            连接点
	 * @param methodName
	 *            方法名称
	 * @return 方法
	 */
	private Method currentMethod(ProceedingJoinPoint joinPoint, String methodName) {
		/**
		 * 获取目标类的所有方法，找到当前要执行的方法
		 */
		Method[] methods = joinPoint.getTarget().getClass().getMethods();
		Method resultMethod = null;
		for (Method method : methods) {
			if (method.getName().equals(methodName)) {
				resultMethod = method;
				break;
			}
		}
		return resultMethod;
	}

	public LogPoint getLogPoint() {
		return logPoint;
	}

	public void setLogPoint(LogPoint logPoint) {
		this.logPoint = logPoint;
	}

}