Spring AOP + PageHelper分页

增加依赖配置

<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjweaver</artifactId>
  <version>1.6.11</version>
</dependency>
    
<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjrt</artifactId>
  <version>1.6.11</version>
</dependency>
//增加pagehelper
    
<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper</artifactId>
  <version>4.1.0</version>
</dependency>

增加配置

<context:component-scan base-package="com.example.controller"/>
    
   <!-- 启动对@AspectJ注解的支持 -->
   <aop:aspectj-autoproxy/>
    
    
   <!--启动springmvc注解-->
   <mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />

增加注解

@Target({ElementType.PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface EnablePaging {
    String value()  default "";
}

增加AOP文件。这里约定最后两个参数是pageNum 和pageSize

  @Aspect
  @Component
  @Slf4j
  public class PageAop {
  
     @Pointcut("@annotation(com.example.annotation.EnablePaging)")
      public void serviceAspect(){
          log.info("serviceAspect");
      }
  
      @Before("serviceAspect()")
      public  void doBefore(JoinPoint joinPoint) {
          log.info("doBefore");
      }
  
   
  
  
      @Around(value = "serviceAspect()")
      public Object doAround(ProceedingJoinPoint point) throws  Throwable{
          log.info("doAround ");
          Object[] args = point.getArgs();
          Integer pageNum = 1;
          Integer pageSize = 10;
          if(args.length >= 2){
              pageNum = (Integer)args[args.length -2];
              pageSize = (Integer)args[args.length - 1];
          }
          PageHelper.startPage(pageNum, pageSize);
          return  point.proceed(args);
      }
  
   
  
  }

Controller层

@RequestMapping(value = "queryLogs")
  @EnablePaging
  @ResponseBody
  public  ServerResponse<PageInfo> queryLogs(HttpServletResponse response,
                                                    @RequestParam(value = "pageNum",defaultValue = "1") int pageNum,
                                                    @RequestParam(value = "pageSize",defaultValue = "10")int pageSize){
      List<Log> list =  iLogService.queryList(pageNum, pageSize);
      PageInfo pageInfo = new PageInfo(list);
      return ServerResponse.createBySuccess(pageInfo);
  }