How to connect layui and backend

Layui front and backend data interaction:

layui has its own set of specific data format interactions (this is very important), and the code must be parameter :0, msg: "", count: data size (int), data: "Data List". Generally we choose to encapsulate and return the receiving class.
Layui frontend js request data
html code

<link rel="stylesheet" href="static/layui/css/layui.css" media="all" />
<script type="text/javascript" src="static/layui/layui.js"></script>
<table class="layui-hide" id="test" lay-filter="table"></table>

js code

layui.use(['form','layer','table'], function(){
          var table = layui.table
          ,form = layui.form,$=layui.$;

          table.render({
            elem: '#test'  //绑定table id
            ,url:'sys/menu/list'  //数据请求路径
            ,cellMinWidth: 80
            ,cols: [[
              {type:'numbers'}
              ,{field:'name', title:'菜单名称'}
              ,{field:'parentName', title:'父菜单名称',width:150}
              ,{field:'url', title: '菜单路径'}
              ,{field:'perms', title: '菜单权限'}
              ,{field:'type', title:'类型'}
              ,{field:'icon', title:'图标'}
              ,{field:'orderNum', title:'排序'}
              ,{fixed: 'right',title: '操作', width:180,      align:'center', toolbar: '#toolBar'}//一个工具栏  具体请查看layui官网
            ]]
            ,page: true   //开启分页
            ,limit:10   //默认十条数据一页
            ,limits:[10,20,30,50]  //数据分页条
            ,id: 'testReload'  
          });
});

java backend code

 @RequestMapping("/list")
        @ResponseBody
        @RequiresPermissions("sys:menu:list")
        public Layui list(@RequestParam Map<String, Object> params){
            //查询列表数据
            Query query = new Query(params);
            List<SysMenuEntity> menuList = sysMenuService.queryList(query);
            int total = sysMenuService.queryTotal(query);
            PageUtils pageUtil = new PageUtils(menuList, total, query.getLimit(), query.getPage());
            return Layui.data(pageUtil.getTotalCount(), pageUtil.getList());
        }

Layui tool class code

public class Layui  extends HashMap<String, Object> {

    public static Layui data(Integer count,List<?> data){
        Layui r = new Layui();
        r.put("code", 0);
        r.put("msg", "");
        r.put("count", count);
        r.put("data", data);
        return r;
    }
}

PageUtils is optional here, you can encapsulate it yourself

@Data
public class PageUtils implements Serializable {
    private static final long serialVersionUID = -1202716581589799959L;
    //总记录数
    private int totalCount;
    //每页记录数
    private int pageSize;
    //总页数
    private int totalPage;
    //当前页数
    private int currPage;
    //列表数据
    private List<?> list;
    /**
     * 分页
     * @param list        列表数据
     * @param totalCount  总记录数
     * @param pageSize    每页记录数
     * @param currPage    当前页数
     */
    public PageUtils(List<?> list, int totalCount, int pageSize, int currPage) {
        this.list = list;
        this.totalCount = totalCount;
        this.pageSize = pageSize;
        this.currPage = currPage;
        this.totalPage = (int)Math.ceil((double)totalCount/pageSize);
    }
}

Recommendation: layui framework tutorial

The above is the detailed content of How to connect layui and backend. For more information, please follow other related articles on the PHP Chinese website!