springboot项目实战之简单aop定义使用_springboot 项目中如何定义一个aop的切面方法,并在service层方法中去使用-优快云博客

本文链接：https://blog.youkuaiyun.com/sccd2009/article/details/134590035

本文介绍了如何在SpringBoot项目中使用AOP（面向切面编程）进行API权限控制，包括定义切面、注解处理器和在Controller中应用@ManagerOperatorRole注解来检查用户权限。

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Spring AOP面向切面编程

AOP为Aspect Oriented Programming的缩写，意为:面向切面编程，通过预编译方式和运行期间动态代理实现程序功能的统一维护的一种技术。

Springboot实战

1. 定义名称，如下 ManagerOperatorRole

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface ManagerOperatorRole {
}

2. 定义切面

@Configuration
@Aspect
public class ManagerAop {
    @Autowired
    HttpServletRequest request;

    @Autowired
    private DdMemberRolesMapper memberRolesMapper;

    @Pointcut("@annotation(com.ruoyi.shop.api.aop.ManagerOperatorRole)")
    private void permissionCheck() {}

    @Around("permissionCheck()")
    public Object around(ProceedingJoinPoint p) throws Throwable{
        ***********************略  以下示例
        DdMemberRoles roles=new DdMemberRoles();
        roles.setMemberId(user.getUserId());
        roles.setRolesType(Constants.MARKET_ROLE);
        List<DdMemberRoles> ddMemberRoles=memberRolesMapper.selectDdMemberRolesList(roles);
        if(CollUtil.size(ddMemberRoles)==0){
            return AjaxResult.warn("无权访问");
        }
        /**
         if (ddMemberRoles == null || ddMemberRoles.isEmpty()) {
             return AjaxResult.warn("无权访问");
         }

         try {
             Map<String, Object> response = (Map<String, Object>) p.proceed();
             response.put("marketId", ddMemberRoles.get(0).getMarketId());
             return response;
         } catch (Exception e) {
             log.error("Error occurred: ", e);
             return AjaxResult.error(e.getMessage());
         }
         */
       ***********略
        return response;
    }



}

3. controller 案例使用

@GetMapping("getMerchApplyList")
    @ManagerOperatorRole
    public AjaxResult getMerchApplyList(@RequestParam(name = "page",defaultValue = "1")int page,
                                        @RequestParam(name="status",defaultValue = "0") String status){
        MPJLambdaWrapper<ApplyMerchVo> wrapper=new MPJLambdaWrapper<ApplyMerchVo>()
                .selectAll(ApplyMerchVo.class)
                .selectAs(DdMarketArea::getAreaName,ApplyMerchVo::getAreaName)
                .selectAs(MarketCateDto::getCateName,ApplyMerchVo::getCateName)
                .selectAs(DdMarket::getMarketName,ApplyMerchVo::getMarketName)
                .leftJoin(MarketCateDto.class, MarketCateDto::getMarketCateId, ApplyMerchVo::getCategoryId)
                .leftJoin(DdMarketArea.class, DdMarketArea::getAreaId, ApplyMerchVo::getAreaId)
                .leftJoin(DdMarket.class,DdMarket::getMarketId,ApplyMerchVo::getMarketId)
                .in(ApplyMerchVo::getStatus, StrUtil.split(status, ","))
                .orderByDesc(ApplyMerchVo::getUpdateTime);//降序排序

        //分页查询
        Page<ApplyMerchVo> listPage = ddMarketMerchApplyMapper.selectJoinPage(new Page<>(page, 10), ApplyMerchVo.class, wrapper);

        return AjaxResult.success("获取成功",listPage.getRecords());

    }