用SpringAOP获取用户操作日志入库

切service层中所有的方法，将有自定义注解的方法的操作日志入库，其中需要注意的几点：

1. 注意aspectjweaver.jar包的版本，一般要1.6以上版本，否则会报错
2. 注意是否使用了双重代理，spring.xml中不需要配置切面类的，否则会出现切两次的情况
3. 注意返回的数据类型，如果是实体类需要获取实体类中每个属性的值，若该实体类中的某个属性也是实体类，需要再次循环获取该属性的实体类属性
4. 用递归的方法获得参数及参数内容

package awb.aweb_soa.service.userOperationLog;

import java.io.IOException;
import java.lang.reflect.Method;
import java.sql.Timestamp;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.sql.rowset.serial.SerialBlob;

import org.apache.commons.lang.WordUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import cn.com.agree.aweb.asapi.ASAPI;
import edm.aweb_soa.aweb_soa.base.user.UserOperationLogDO;
import awb.aweb_soa.aservice.app.DefaultUser;
import awb.aweb_soa.global.annotation.UserOperationType;


@Service
@Aspect
public class UserOperationLogAspect {
	@Autowired
	UserOperationLog userOperationLog;
	/**
	 * 业务逻辑方法切入点，切所有service层的方法
	 */
	@Pointcut("execution(* awb.aweb_soa.service..*(..))")
	public void serviceCall() {

	}
	/**
	 * 用户登录
	 */
	@Pointcut("execution(* awb.aweb_soa.aservice.app.LoginController.signIn(..))")
	public void logInCall() {

	}
	/**
	 * 退出登出切入点
	 */
	@Pointcut("execution(* awb.aweb_soa.aservice.app.DefaultUser.logout(..))")
	public void logOutCall() {

	}

	/**
	 * 操作日志(后置通知)
	 * 
	 * @param joinPoint
	 * @param rtv
	 * @throws Throwable
	 */
	@AfterReturning(value = "serviceCall()", argNames = "rtv", returning = "rtv")
	public void doAfterReturning(JoinPoint joinPoint, Object rtv) throws Throwable {
		operationCall(joinPoint, rtv,"S");
	}
	/**
	 * 用户登录(后置通知)
	 * 
	 * @param joinPoint
	 * @param rtv
	 * @throws Throwable
	 */
	@AfterReturning(value = "logInCall()", argNames = "rtv", returning = "rtv")
	public void doLoginReturning(JoinPoint joinPoint, Object rtv) throws Throwable {
		operationCall(joinPoint, rtv,"S");
	}
	
	@Before(value = "logOutCall()")
	public void logoutCalls(JoinPoint joinPoint) throws Throwable {
		operationCall(joinPoint, null,"S");
	}
	/**
	 * 操作日志(异常通知)
	 * 
	 * @param joinPoint
	 * @param e
	 * @throws Throwable
	 */
	@AfterThrowing(value = "serviceCall()", throwing="e")
	public void doAfterThrowing(JoinPoint joinPoint, Object e) throws Throwable {
		operationCall(joinPoint, e,"F");
	}
	
	/**
	 * 获取用户操作日志详细信息
	 * 
	 * @param joinPoint
	 * @param rtv
	 * @param status
	 * @throws Throwable
	 */
	private void operationCall(JoinPoint joinPoint, Object rtv,String status)
			throws Throwable {
		//获取当前用户
		DefaultUser currentUser = (DefaultUser) ASAPI.authenticator().getCurrentUser();
		String userName = null;
		if (currentUser != null) {
			//获取用户名
			userName = currentUser.getUsername();
			//获取用户ip地址
			HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder
					.getRequestAttributes()).getRequest();
			String userIp = getIpAddress(request);

			// 拼接操作内容的字符串
			StringBuffer rs = new StringBuffer();

			// 获取类名
			String className = joinPoint.getTarget().getClass()
					.getCanonicalName();
			rs.append("类名:" + className + "; 
");

			// 获取方法名
			String methodName = joinPoint.getSignature().getName();
			rs.append("方法名:" + methodName + "; 
");

			// 获取类的所有方法
			Method[] methods = joinPoint.getTarget().getClass()
					.getDeclaredMethods();
			//创建变量用于存储注解返回的value值
			String operationType = "";
			for (Method method:methods) {
				String mName = method.getName();
				// 当切的方法和类中的方法相同时
				if (methodName.equals(mName)) {
					//获取方法的UserOperationType注解
					UserOperationType userOperationType = 
							method.getAnnotation(UserOperationType.class);
					//如果方法存在UserOperationType注解时
					if (userOperationType!=null) {
						//获取注解的value值
						operationType = userOperationType.value();
						
						// 获取操作内容
						Object[] args = joinPoint.getArgs();
						int i = 1;
						if (args!=null&&args.length>0) {
							for (Object arg :args) {
								rs.append("[参数" + i + "======");
								userOptionContent(arg, rs);
								rs.append("]
");
							}
						}
						// 创建日志对象
						UserOperationLogDO log = new UserOperationLogDO();
						log.setLogId(ASAPI.randomizer().getRandomGUID());
						log.setUserCode(userName);
						log.setUserIP(userIp);
						log.setOperationDesc(new SerialBlob(rs.toString().getBytes("UTF-8")));
						log.setOperationType(operationType);
						log.setOperationTime(new Timestamp(System.currentTimeMillis()));
						log.setStatus(status);
						//日志对象入库
						userOperationLog.insertLog(log);
						
					}
				}
			}
		}

			
	}
	
	/**
	 * 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址;
	 * 
	 * @param request
	 * @return
	 * @throws IOException
	 */
	public final static String getIpAddress(HttpServletRequest request)
			throws IOException {
		// 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址

		String ip = request.getHeader("X-Forwarded-For");

		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("Proxy-Client-IP");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("WL-Proxy-Client-IP");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("HTTP_CLIENT_IP");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getHeader("HTTP_X_FORWARDED_FOR");
			}
			if (ip == null || ip.length() == 0
					|| "unknown".equalsIgnoreCase(ip)) {
				ip = request.getRemoteAddr();
			}
		} else if (ip.length() > 15) {
			String[] ips = ip.split(",");
			for (int index = 0; index < ips.length; index++) {
				String strIp = (String) ips[index];
				if (!("unknown".equalsIgnoreCase(strIp))) {
					ip = strIp;
					break;
				}
			}
		}
		return ip;
	}
	/**
	 * 使用Java反射来获取被拦截方法(insert、update, delete)的参数值， 将参数值拼接为操作内容
	 */
	@SuppressWarnings("unchecked")
	public StringBuffer userOptionContent(Object info, StringBuffer rs){
		String className = null;
		// 获取参数对象类型
		className = info.getClass().getName();
		className = className.substring(className.lastIndexOf(".") + 1);
		rs.append("类型："+className+"，");
		
		//参数对象类型不是实体类或者集合时，直接显示参数值
		if (className.equals("String")||className.equals("int")||className.equals("Date")
				||className.equals("Timestamp")||className.equals("Integer")
				||className.equals("B")||className.equals("Long")) {
			rs.append("值：(" + info + ")");
		}
		
		//参数类型是ArrayList集合，迭代里面的对象，并且递归
		if(className.equals("ArrayList")){
			int i = 1;
			//将参数对象转换成List集合
			List