首先寫好一個工具類 LogAspect.java

package com.yangjf.commons;
import java.lang.reflect.Method;
import java.util.Date;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import com.yangjf.entity.Admin;
import com.yangjf.entity.Log;
import com.yangjf.service.LogService;

@Aspect
public class LogAspect {
	
	public Integer id=null; 
	
	@Autowired
	LogService logService;
	
	/**
	 * 管理員登入方法的切入點
	 */
	@Pointcut("execution(* com.yangjf.service.*.login(..))")
	public void loginCell(){
	}
	
	/**
	 * 新增業務邏輯方法切入點
	 */
	@Pointcut("execution(* com.yangjf.service.*.save(..))")
	public void insertCell() {
	}

	/**
	 * 修改業務邏輯方法切入點
	 */
	@Pointcut("execution(* com.yangjf.service.*.update(..))")
	public void updateCell() {
	}

	/**
	 * 刪除業務邏輯方法切入點
	 */
	@Pointcut("execution(* com.yangjf.service.*.delete(..))")
	public void deleteCell() {
	}
	
	/**
	 * 登入操作(後置通知)
	 * @param joinPoint
	 * @param object
	 * @throws Throwable
	 */
	@AfterReturning(value = "loginCell()", argNames = "object", returning = "object")
	public void loginLog(JoinPoint joinPoint, Object object) throws Throwable {
		Admin admin=(Admin)object;
		if (admin==null) {
			return;
		}
		if (joinPoint.getArgs() == null) {// 沒有引數
			return;
		}
		id=admin.getId();
		// 獲取方法名
		String methodName = joinPoint.getSignature().getName();
		// 獲取操作內容
		String opContent = optionContent(joinPoint.getArgs(), methodName);
		
		Log log = new Log();
		log.setContent(opContent);
		log.setAdminId(admin.getId());
		log.setCreateDate(new Date());
		log.setOperation("登入");
		logService.insertLog(log);
	}
	
	/**
	 * 新增操作日誌(後置通知)
	 * 
	 * @param joinPoint
	 * @param object
	 */
	@AfterReturning(value = "insertCell()", argNames = "object", returning = "object")
	public void insertLog(JoinPoint joinPoint, Object object) throws Throwable {
		// Admin admin=(Admin)
		// request.getSession().getAttribute("businessAdmin");
		// 判斷引數
		if (joinPoint.getArgs() == null) {// 沒有引數
			return;
		}
		// 獲取方法名
		String methodName = joinPoint.getSignature().getName();
		// 獲取操作內容
		String opContent = optionContent(joinPoint.getArgs(), methodName);

		Log log = new Log();
		log.setContent(opContent);
		 log.setAdminId(id);;
		log.setOperation("新增");
		log.setCreateDate(new Date());
		logService.insertLog(log);
	}

	/**
	 * 管理員修改操作日誌(後置通知)
	 * 
	 * @param joinPoint
	 * @param object
	 * @throws Throwable
	 */
	@AfterReturning(value = "updateCell()", argNames = "object", returning = "object")
	public void updateLog(JoinPoint joinPoint, Object object) throws Throwable {
		// Admin admin=(Admin)
		// request.getSession().getAttribute("businessAdmin");

		// 判斷引數
		if (joinPoint.getArgs() == null) {// 沒有引數
			return;
		}
		// 獲取方法名
		String methodName = joinPoint.getSignature().getName();
		// 獲取操作內容
		String opContent = optionContent(joinPoint.getArgs(), methodName);

		// 建立日誌物件
		Log log = new Log();
		log.setContent(opContent);
		log.setAdminId(id);
		log.setOperation("修改");// 操作
		log.setCreateDate(new Date());
		logService.insertLog(log);
	}

	/**
	 * 刪除操作
	 * 
	 * @param joinPoint
	 * @param object
	 */
	@AfterReturning(value = "deleteCell()", argNames = "object", returning = "object")
	public void deleteLog(JoinPoint joinPoint, Object object) throws Throwable {
		// Admin admin=(Admin)
		// request.getSession().getAttribute("businessAdmin");
		// 判斷引數
		if (joinPoint.getArgs() == null) {// 沒有引數
			return;
		}
		// 獲取方法名
		String methodName = joinPoint.getSignature().getName();

		StringBuffer rs = new StringBuffer();
		rs.append(methodName);
		String className = null;
		for (Object info : joinPoint.getArgs()) {
			// 獲取物件型別
			className = info.getClass().getName();
			className = className.substring(className.lastIndexOf(".") + 1);
			rs.append("[引數，型別:" + className + "，值:(id:"
					+ joinPoint.getArgs()[0] + ")");
		}

		// 建立日誌物件
		Log log = new Log();
		log.setContent(rs.toString());
		log.setAdminId(id);
		log.setOperation("刪除");// 操作
		log.setCreateDate(new Date());
		logService.insertLog(log);
	}

	/**
	 * 使用Java反射來獲取被攔截方法(insert、update)的引數值， 將引數值拼接為操作內容
	 * 
	 * @param args
	 * @param mName
	 * @return
	 */
	public String optionContent(Object[] args, String mName) {
		if (args == null) {
			return null;
		}
		StringBuffer rs = new StringBuffer();
		rs.append(mName);
		String className = null;
		int index = 1;
		// 遍歷引數物件
		for (Object info : args) {
			// 獲取物件型別
			className = info.getClass().getName();
			className = className.substring(className.lastIndexOf(".") + 1);
			rs.append("[引數" + index + "，型別:" + className + "，值:");
			// 獲取物件的所有方法
			Method[] methods = info.getClass().getDeclaredMethods();
			// 遍歷方法，判斷get方法
			for (Method method : methods) {
				String methodName = method.getName();
				// 判斷是不是get方法
				if (methodName.indexOf("get") == -1) {// 不是get方法
					continue;// 不處理
				}
				Object rsValue = null;
				try {
					// 呼叫get方法，獲取返回值
					rsValue = method.invoke(info);
				} catch (Exception e) {
					continue;
				}
				// 將值加入內容中
				rs.append("(" + methodName + ":" + rsValue + ")");
			}
			rs.append("]");
			index++;
		}
		return rs.toString();
	}

}
 

aop在applicationcontext.xml的配置

<!-- 日誌 -->
<aop:aspectj-autoproxy />
<bean id="logBean" class="com.yangjf.commons.LogAspect"></bean>