在controller中如何设置接收参数的默认值

public @ResponseBody Object queryActivityForPageByCondition(
　　　　@RequestParam(value="kkk" required = false,defaultValue = "1") int pageNo,
　　　　@RequestParam(required = false,defaultValue = "10") int pageSize){

@Controller
@RequestMapping(value = “/biz/assay/assay_order_audit_condition”)

@RequestMapping(value = {“create”},method = {RequestMethod.GET})

@RequestMapping(value = {“create”},method = {RequestMethod.POST})

@RequestMapping(value = {“batch/delete”},method = {RequestMethod.GET, RequestMethod.POST})

public String view(String Id) {
}

public String view() {
    request.getParameter("id");
}

public String updateRecordStatusBatch(@RequestParam(value = "ids", required = false) String[] ids) {
}

@RequestParam(value = “id”, required = true) String id

@RequestParam(value = “id”, required = false) String id

@RequestMapping(value = {"{id}/delete"},method = {RequestMethod.GET})
public String showDeleteForm(@PathVariable("id") String Id, Model model) {
}

@RequestMapping(value = {“{id}/delete”},method = {RequestMethod.GET})