待总结知识点学习

1、使用 MessageFormat 格式化文本

 int planet = 7;
 String event = "a disturbance in the Force";

 String result = MessageFormat.format(
     "At {1,time} on {1,date}, there was {2} on planet {0,number,integer}.",
     planet, new Date(), event);
 

The output is:

 At 12:30 PM on Jul 3, 2053, there was a disturbance in the Force on planet 7.

2、自定义注解

定义注解

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface OperateLog {
 
    /**
     * 模块名称
     * @return
     */
    String moudleName() default "";
    
    /**
     * 操作名称
     * @return
     */
    String optName() default "";
 
    /**
     * 业务类型描述
     * @return
     */
    String description() default "";

}

 通过 aop 做拦截处理

@Aspect
@Component
public class OperateLogAspect {
	
	@Autowired
	private OperateLogService operateLogService;

    @Pointcut("@annotation(com.youngcms.core.annotation.OperateLog)")  
    public void operateLogCut(){
    	
    }
    
    @Around("operateLogCut()")
    public Object around(ProceedingJoinPoint point) throws Throwable {
		long beginTime = System.currentTimeMillis();
		//执行方法
		Object result = point.proceed();
		//执行时长(毫秒)
		long time = System.currentTimeMillis() - beginTime;
		//保存日志
		saveOperateLog(point, time);

		return result;
	}
    
    private void saveOperateLog(ProceedingJoinPoint joinPoint, long time) {
		MethodSignature signature = (MethodSignature) joinPoint.getSignature();
		Method method = signature.getMethod();
		RequestMapping classRequestMapping=method.getDeclaringClass().getAnnotation(RequestMapping.class);
		OperateLog operateLog=method.getAnnotation(OperateLog.class);
		RequestMapping mothodRequestMapping= method.getAnnotation(RequestMapping.class);
		com.youngcms.bean.OperateLog operateLogBean=new com.youngcms.bean.OperateLog();
		if(operateLog!=null){
			operateLogBean.setModuleName(operateLog.moudleName());
			operateLogBean.setOptName(operateLog.optName());
			operateLogBean.setDescription(operateLog.description());
		}
		//请求的类名
		String className = joinPoint.getTarget().getClass().getName();
		//请求的方法名
		String methodName = signature.getName();
		//请求的参数
	    //Object[] args = joinPoint.getArgs();
		operateLogBean.setIp(IPUtils.getIpAddr(HttpKit.getRequest()));
		operateLogBean.setTime(time);
	    operateLogBean.setMethod(className+"."+methodName+"()");
	    operateLogBean.setUrl(classRequestMapping.value()[0]+mothodRequestMapping.value()[0]);
	    String username = ((SysUser) SecurityUtils.getSubject().getPrincipal()).getRealName();
	    operateLogBean.setAuthor(username);
	    operateLogBean.setCreateTime(DateUtil.dateToStr(new Date(), 12));
	    operateLogService.insert(operateLogBean);
	}
    

}

　　

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