LigerUI Grid服务端分页技术

Grid部分：

$("#grid").ligerGrid({
            title:'串码文件管理',
            height:$(document).height()-5,
            checkbox:true,
            columns: [
                { display: '串码编号',name: 'id', align: 'left',  100, minWidth: 60 },
                { display: '串码', name: 'code', minWidth: 220 },
                { 
                    display: '有效性', name: 'valid', minWidth: 120,
                    render:function(item){
                       if(item.valid==0)
                       {
                          return '<span class="red">已经使用过的</span>';
                       }else if(item.valid==1){
                          return '<span class="blue">有效的</span>';
                       }
                    }
                }],
                url:'/admin/getAllSequence',
                pageSize:20,
                usePager:true,
                toolbar: { 
                    items: [
                        { text: '批量上传串码', click:this.add, icon: 'add' },
                        { line: true },
                        { text: '删除', click: this.remove,icon:'delete' }
                    ]
                }
         });        

服务端部分：

    public String getAllSequence()
    {
        /**
         *   返回所有串码列表
         */
         dataMap.clear();
         
        //分页相关
         String page=request.getParameter("page");
         String pagesize=request.getParameter("pagesize");
         
         if(!StringUtils.isBlank(page)&&!StringUtils.isBlank(pagesize))
         {
             int start=Integer.parseInt(page);
             int limit=Integer.parseInt(pagesize);
             
             HashMap<String,Integer> map=new  HashMap<String,Integer>();
             map.put("start", start*limit-limit);
             map.put("limit", limit);
             
             dataMap.put("Rows", getShop().getSeqByPage(map));
             
         }
        
        dataMap.put("Total", getShop().getSeqCount());
        
        return SUCCESS;
    }