这里使用layui渲染的导航

实体类

dept.java

private int id; //id private String dept_name; //部门名称 private int pid; //上级部门id private int sort_num; //排序值 private int create_id; //创建人 private String create_time; //创建时间 private int modify_id; //修改人 private String modify_time; //最后修改时间 private int is_del; // 是否删除 0 未删除 1 已删除 private int status; //status private String remark; //remark private List<Dept> deptChild = new ArrayList<>(); //部门迭代

DeptMapper.java

List<Dept> selectDeptForJsonMenu();

DeptMapper.xml

<resultMap type="com.ys.entity.Dept" id="deptFirst"> <result column="id" property="id" javaType="java.lang.Integer" /> <result column="dept_name" property="dept_name" javaType="java.lang.String" /> <result column="sort_num" property="sort_num" javaType="java.lang.Integer" /> <result column="create_time" property="create_time" javaType="java.lang.String" /> <result column="modify_id" property="modify_id" javaType="java.lang.Integer" /> <result column="modify_time" property="modify_time" javaType="java.lang.String" /> <result column="is_del" property="is_del" javaType="java.lang.Integer" /> <result column="status" property="status" javaType="java.lang.Integer" /> <result column="remark" property="remark" javaType="java.lang.String" /> <collection column="id" property="deptChild" javaType="java.util.ArrayList" select="selectDeptForJsonMenuChild"/> </resultMap> <!-- 查询部门菜单树 --> <select id="selectDeptForJsonMenu" resultMap="deptFirst"> SELECT * FROM sys_dept WHERE pid = 0 AND is_del = 0 ORDER BY sort_num </select> <select id="selectDeptForJsonMenuChild" resultMap="deptFirst" parameterType="java.lang.Integer"> select * FROM sys_dept where pid = #{id} AND is_del = 0 ORDER BY sort_num </select>

DeptService.java

public List<Dept> selectDeptForJsonMenu(){ return mapper.selectDeptForJsonMenu(); }

DeptController.java

@RequestMapping(value = "selectDeptForJsonMenu",method={RequestMethod.GET,RequestMethod.POST}) @ResponseBody public List<Dept> selectDeptForJsonMenu(){ return service.selectDeptForJsonMenu(); }

html 引入layui.js,layui.css 并加载element模块.

<div id="leftMenu"></div>$(function(){ $.ajax({ method:'post', url:getPath+"dept/selectDeptForJsonMenu", dataType:'json', success:function(data){ if(data.length > 0){ var showlist = $('<ul class="layui-nav layui-nav-tree"></ul>'); showall(data, showlist); $("#leftMenu").html(showlist); }else{ $('#leftMenu').html('<span class="layui-btn layui-btn-primary" id="add">添加</span>') ; } } }); //json为json数据 //parent为最终html拼接内容 function showall(json, parent) { for (var i in json) { //有子节点 遍历 if (json[i].deptChild.length > 0) { //创建li var li = $('<li class="layui-nav-item layui-nav-itemed"></li>'); $(li).append('<a href="javascript:;" rel="external nofollow" rel="external nofollow" >'+json[i].dept_name+'</a>'); $(li).append('<ul class="layui-nav-child"></ul>').appendTo(parent); //将UL选中 回调 showall(json[i].deptChild, $(li).children().eq(1)); } //无子级 else { $('<li></li>').append('<a href="javascript:;" rel="external nofollow" rel="external nofollow" >'+json[i].dept_name+'</a>').appendTo(parent); } } }});

总结

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