spring的AOP调用(三)环绕通知完整实现代码
spring的AOP调用(三)环绕通知完整实现代码
采用aop:config配置环绕通知来实现AOP处理，在DEMO项目中表现良好。
核心配置文件如下：
<aop:config>
<aop:aspect ref="managerAOP">
<aop:pointcut id="theExecutionOfBizOrderSaveMethod"
expression="execution(*
com.sillycat..*.dao.*DAO.save*(..)) and args(obj)" />
<aop:around pointcut-ref="theExecutionOfBizOrderSaveMethod"
method="save" />
</aop:aspect>
</aop:config>
<aop:config>
<aop:aspect ref="managerAOP">
<aop:pointcut id="theExecutionOfBizOrderDeleteMethod"
expression="execution(* com.sillycat..*.dao.*DAO.delete*(..)) and args(obj)" />
<aop:around pointcut-ref="theExecutionOfBizOrderDeleteMethod"
method="delete" />
</aop:aspect>
</aop:config>
核心类ManagerAOPImpl.java如下：
package com.sillycat.easyaop.service.aop;
import javax.annotation.Resource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.ProceedingJoinPoint;
import org.springframework.stereotype.Service;
import com.sillycat.easyaop.dao.RoleDAO;
import com.sillycat.easyaop.model.Role;
@Service("managerAOP")
public class ManagerAOPImpl {
private static Log log = LogFactory.getLog(ManagerAOPImpl.class);
private static final String BASE_MANAGER_SAVE = "com.sillycat.easyaop.dao.impl.RoleDAOImpl";
private RoleDAO roleDAO;
@Resource(name = "roleDAO")
public void setRoleDAO(RoleDAO roleDAO) {
this.roleDAO = roleDAO;
}
public void delete(ProceedingJoinPoint call, Object obj) {
log.debug("target name is : " + call.getTarget());
log.debug("args is : " + obj);
try {
call.proceed();
} catch (Throwable e) {
log.error(e);
throw new RuntimeException(e);
} finally {
if (checkIfNeedProccess(call, obj)) {
log.debug("object is extends User,begin to ivoke roleDAO!");
roleDAO.delete((Role) obj);
}
}
}
public void save(ProceedingJoinPoint call, Object obj) {
log.debug("target name is : " + call.getTarget());
log.debug("args is : " + obj);
if (checkIfNeedProccess(call, obj)) {
log.debug("object is extends User,begin to ivoke roleDAO!");
roleDAO.save((Role) obj);
}
try {
call.proceed();
} catch (Throwable e) {
log.error(e);
throw new RuntimeException(e);
}
}
private boolean checkIfNeedProccess(ProceedingJoinPoint call, Object obj) {
boolean flag = false;
if (!BASE_MANAGER_SAVE.equalsIgnoreCase(getCompleteTargetName(call
.getTarget()))
&& (obj instanceof Role)) {
flag = true;
}
return flag;
}
private String getCompleteTargetName(Object target) {
String className = "";
if (target != null) {
className = target.toString();
int loc = className.indexOf("@");
if (loc >= 0) {
className = className.substring(0, loc);
}
}
return className;
}
}
以上方式在DEMO项目中，在公司的正式项目的单元测试中都表现正确，但是启动WEB容器后发现，AOP拦截了3次，查找项目的多余JAR包冲突，WEB.XML配置，SCCL-SERVLET.XML配置等都没有找到问题。所以转而去测试前、后通知方式。
