Spring框架基于AOP实现简单日志管理步骤解析

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface LogAnno {
	String operatorType();
}

@Component
@Aspect
public class LogAopAspect {
	@Autowired
	LogtableService logtableService;//Logtable为数据库中的一张表，用于存储日志信息
	@Around("@annotation(qj.admin.aspect.LogAnno)")//设定需要捕获的标签
	public Object around(ProceedingJoinPoint pjp) throws Throwable
	{
		MethodSignature methodSignature =(MethodSignature)pjp.getSignature();
		Method method = methodSignature.getMethod();
		String targetName = pjp.getTarget().getClass().getName(); 
		System.out.println("增强的类是:"+targetName);
		System.out.println("增强的方法是:"+method.getName());
		Method realMethod = pjp.getTarget().getClass().getDeclaredMethod(methodSignature.getName(), method.getParameterTypes());
		LogAnno logAnno = realMethod.getAnnotation(LogAnno.class);//获取注解的方法上的自定义标签类
		String operatortype = logAnno.operatorType();//获取到自定义标签上的注解如“修改账户状态”
		//String operatortype = "修改用户积分";
		AdminLog adminLog = new AdminLog();
		adminLog.setOperatortype(operatortype);
		adminLog.setOperator("123");
		Object resultObject = null;
		Object [] parameter = pjp.getArgs();//获取注解的方法的传入参数
		try {
			resultObject = pjp.proceed();
			adminLog.setOperatorresult("正常 "+Arrays.toString(parameter));
		} catch (Exception e) {
			// TODO: handle exception
			adminLog.setOperatorresult("失败");
		}
		finally {
			adminLog.setOperatordate(new Date());
			logtableService.addLog(adminLog);
		}
		return resultObject;
	}

@LogAnno(operatorType = "修改账户状态")
	public void handleUser(int IDNumber, int type) {
		User user = userDAO.get(IDNumber);
		userDAO.update(user, type);
	}