注解包在spring项目中controller层中的作用

当某个功能用到get传参方法时

  @GetMapping("/list/{categoryId}")

传入参数需要用到此注解： @ApiImplicitParams

@ApiImplicitParams({
            @ApiImplicitParam(value = "分类id",name = "categoryId",required = true,dataType = "long"),
            @ApiImplicitParam(value = "页码",name = "page",required = true,dataType = "int"),
            @ApiImplicitParam(value = "每页条数",name = "pageSize",required = true,dataType = "int")
    })
    public JsonResult> listSpuByPage(
            @PathVariable Long categoryId,  Integer page, Integer pageSize){
        JsonPage jsonPage = frontProductService.listSpuByCategoryId(categoryId, page, pageSize);
        return JsonResult.ok(jsonPage);
    }

使用@PathVariable注解在路径中灵活传入参数，@ApiImplicitParams中的@ApiImplicitParam注解用以说明参数作用，在knife4j中调试时有至关重要的作用