1949啦网--小小

1. 增加依赖配置

    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.6.11</version>

    <groupId>org.aspectj</groupId>
    <artifactId>aspectjrt</artifactId>
    <version>1.6.11</version>

增加pagehelper

<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper</artifactId>
  <version>4.1.0</version>
</dependency>

1. 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" />
   

2. 增加注解

   @Target({ElementType.PARAMETER, ElementType.METHOD})
   @Retention(RetentionPolicy.RUNTIME)
   @Documented
   public @interface EnablePaging {

      String value()  default "";

   }

3. 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);
    }
 
 
}

1. 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);
    }

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