AspectJ獲取Annotation的屬性值

效果

xml開啓AOP配置

<aop:config proxy-target-class="false" />
<aop:aspectj-autoproxy />
<bean id="opLogAspectj" class="com.noob.aspectj.OpLogAspectj"></bean>

使用方式：

@OpLog(model = 99)
public String test() {// do somethings }

@RequiresPermissions("rule:delete")
public Response<Integer> delete(String params, HttpServletRequest request) { // do somethings }

aspectj實現：

package com.noob.aspectj;

import lombok.extern.slf4j.Slf4j;
​
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface OpLog {
	int model() default 1;
}

1. 對帶指定註解切入，並獲取到註解的屬性值
   （若advice方法含註解對象，「@annotation(參數名)」 是必須的，argNames 配置非必要！但二者配置的值必定要與advice方法內註解對象名一致！ 不然沒法匹配參數，啓動報錯）

   //表達式
       @Pointcut(value = "@annotation(com.noob.annotation.OpLog)")
       //簽名
       public void opLogPointcut(){}
       
       // 另外的寫法  @Around(value = "execution(@cn.utrust.trusts.config.OpLog * *.*(..)) && @annotation(opLog)"  , argNames="opLog") 
       @Around(value= "opLogPointcut() && @annotation(opLog)" ) 
       public Object aroundLog(ProceedingJoinPoint point, OpLog opLog) throws Throwable{
           Object obj = null;
           Object[] args = point.getArgs();
           
           try {
               obj = point.proceed(args);
           } catch (Throwable e) {
               log.error("方法執行異常", e);
           }
           long endTime = System.currentTimeMillis();
           MethodSignature signature = (MethodSignature) point.getSignature();
           String methodName = signature.getDeclaringTypeName() + "." + signature.getName();
           return obj;
       }

2. 指定位置的參數
   （args配置值內的參數名必定要與advice方法內參數名一致， 執行時會匹配指定位置上參數類型一致的鏈接點進入切面）

   @Aspect
   @Slf4j
   public class OpLogAspectj {
      
    @Pointcut(value = "@annotation(org.apache.shiro.authz.annotation.RequiresPermissions)")  
    public void permissionPointcut(){}
   
     @Around(value= "permissionPointcut() && (args(request, ..) || args(.., request))")
     public Object aroundPermission(ProceedingJoinPoint point, HttpServletRequest request) throws Throwable{
           Object obj = null;
           Object[] args = point.getArgs();
           
           try {
               SsoUser ssoUser = SsoSession.getCurrentUser(request);
               obj = point.proceed(args);
           } catch (Throwable e) {
               log.error("方法執行異常", e);
           }
           return obj;
       }    
   }