Spring面向切面编程AOP（around）

详细分析Spring AOP实现的JDK代理AOP，与CGLIB实现AOP代理； http://blog.csdn.net/u013126379/article/details/52121096
1、采用注释注入的方式

配置文件：

<aop:aspectj-autoproxy proxy-target-class="true"/>

表示使用CGLib动态代理技术织入增强

代码编写：

package com.ldygo.order.mapper.proxy;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.ldygo.order.dao.mybatis.client.OrderMasterMapper;
import com.ldygo.order.dao.mybatis.dto.OrderMaster;
import com.ldygo.order.mongo.dao.OrderLogMongoDBService;
import com.ldygo.order.mongo.dto.OrderLogMongoDTO;

/**
* <p> Title: OrderLogAOPServiceImpl </p>
* <p> Description: 订单日志 </p>
* <p> Copyright: openlo.cn Copyright (C) 2017 </p>
*
* @author huangl
* @since 2017年5月26日 上午10:08:45
*/

@Component("orderLogAOPServiceImpl")
@Aspect
public class OrderLogAOPServiceImpl implements IAOPService{

@Autowired
private OrderLogMongoDBService orderLogMongoDBService;

@Autowired
private OrderMasterMapper orderMasterMapper;

@Around("execution(* com.ldygo.order.dao.mybatis.client.OrderMasterMapper.updateByPrimaryKeySelective(..))")
public Object aroundAdvice(ProceedingJoinPoint call){

Object object = null;
try {
object = call.proceed();
} catch (Throwable e) {
e.printStackTrace();
} finally {

//1.判断是否修改成功
if(object !=null && object instanceof Integer){
int i = (int) object;
if(i>0){

//2.如果修改成功,获取参数
Object[] argums = call.getArgs();
if(argums!=null && argums.length>0){
OrderMaster order = (OrderMaster) argums[0];
String orderNO = order.getOrderNo();
OrderMaster orderMaster = this.orderMasterMapper.selectByPrimaryKey(orderNO);

//3.设置订单日志参数
OrderLogMongoDTO orderLogMongoDTO = new OrderLogMongoDTO();
orderLogMongoDTO.setOrderNo(orderMaster.getOrderNo());
orderLogMongoDTO.setUpdateBy(orderMaster.getUpdatedBy());
orderLogMongoDTO.setOrderMaster(orderMaster);

try {
this.orderLogMongoDBService.insertOrderLog(orderLogMongoDTO);
} catch (Exception e) {
e.printStackTrace();
}

}
}
}

}

return object;
}

}

2、xml配置方式

表示使用jdk动态代理织入增强

配置文件：

<bean id="xmlHandler" class="com.ldygo.order.proxy.OrderLogAOPServiceImpl" />
<aop:config>
<aop:aspect id="aspect" ref="xmlHandler">
<aop:pointcut id="pointUserMgr" expression="execution(* com.ldygo.order.dao.mybatis.client.OrderMasterMapper.updateByPrimaryKeySelective(..))"/>
<aop:around method="aroundAdvice"  pointcut-ref="pointUserMgr"/>
</aop:aspect>
</aop:config>

代码编写：

package com.ldygo.order.proxy;

import org.aspectj.lang.ProceedingJoinPoint;
import org.springframework.beans.factory.annotation.Autowired;

import com.ldygo.order.dao.mybatis.client.OrderMasterMapper;
import com.ldygo.order.dao.mybatis.dto.OrderMaster;
import com.ldygo.order.mongo.dao.OrderLogMongoDBService;
import com.ldygo.order.mongo.dto.OrderLogMongoDTO;

/**
* <p> Title: OrderLogAOPServiceImpl </p>
* <p> Description: 订单日志 </p>
* <p> Copyright: openlo.cn Copyright (C) 2017 </p>
*
* @author huangl
* @since 2017年5月26日 上午10:08:45
*/

//@Component("orderLogAOPServiceImpl")
//@Aspect
public class OrderLogAOPServiceImpl  {

@Autowired
private OrderLogMongoDBService orderLogMongoDBService;

@Autowired
private OrderMasterMapper orderMasterMapper;

//@Around("execution(* com.ldygo.order.dao.mybatis.client.OrderMasterMapper.updateByPrimaryKeySelective(..))")
public Object aroundAdvice(ProceedingJoinPoint call){

//org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory;

Object object = null;
try {
object = call.proceed();
} catch (Throwable e) {
e.printStackTrace();
} finally {
//1.判断是否修改成功
if(object !=null && object instanceof Integer){
int i = (int) object;
if(i>0){

//2.如果修改成功,获取参数
Object[] argums = call.getArgs();
if(argums!=null && argums.length>0){
OrderMaster order = (OrderMaster) argums[0];
String orderNO = order.getOrderNo();
OrderMaster orderMaster = this.orderMasterMapper.selectByPrimaryKey(orderNO);

//3.设置订单日志参数
OrderLogMongoDTO orderLogMongoDTO = new OrderLogMongoDTO();
orderLogMongoDTO.setOrderNo(orderMaster.getOrderNo());
orderLogMongoDTO.setUpdateBy(orderMaster.getUpdatedBy());
orderLogMongoDTO.setOrderMaster(orderMaster);

try {
this.orderLogMongoDBService.insertOrderLog(orderLogMongoDTO);
} catch (Exception e) {
e.printStackTrace();
}

}
}
}
}

return object;
}

}