html

			<div class="layui-form-item">
				<div class="layui-inline">
					<label class="layui-form-label fwb"  style="margin-top:4px;">原因</label>
					<div class="layui-input-inline" style="margin-top:7px;">
					 <select name="punishreasonone" lay-filter="reason" id="punishreasonone" >
					 	<option value="">请选择</option>
				     </select>
					 </div>
				</div>
				<div class="layui-inline" id="punishreasontwodiv" >
					 <select name="punishreasontwo" lay-filter="reasontwo" id="punishreasontwo" >
					 	<option value="" >请选择</option>
				     </select>
				</div>
			</div>

js根据获取的数据动态生成select 的option

layui.form.on('select(reason)', function(data){
		  debugger;
		  var url = CONTEXT_PATH+"/dictionary/dictionaryItemList";
			var param = {
					"dictCode":data.value
			};
			$("#punishreasontwo option").remove();
			var data = $.getData(url,param);
			var punishreason = $("#punishreasontwo");
			if(data.length==0){
				$("#punishreasontwodiv").attr("style","display: none;");
				return;
			}else{
				$("#punishreasontwodiv").attr("style","display: ;");
			}
			punishreason.append("<option value=''>请选择</option>");
			$(data).each(function(index,obj){
				punishreason.append("<option value='"+obj.itemCode+"'>"+obj.itemName+"</option>");
			});
			
			layui.form.render('select');
		});
		
		var params = {
				"rewardpubId":$.QueryString("entityId")
		};
			var data = $.getData(CONTEXT_PATH + '/publish/get1',params);
			if(data && data.status == WebConst.SUCCESS && data.data){
				var reason = data.data.punishreasonone;
				var url = CONTEXT_PATH+"/dictionary/dictionaryItemList";
					var param = {
							"dictCode":reason
					};
					var data = $.getData(url,param);
					var punishreason = $("#punishreasontwo");
					$("#punishreasontwo option").remove();
					punishreason.append("<option value=''>请选择</option>");
					$(data).each(function(index,obj){
						punishreason.append("<option value='"+obj.itemCode+"'>"+obj.itemName+"</option>");
					});
					layui.form.render('select');
			}

后台返回实体类封装返回的数据

private String rewardName;
private String punishreasonone;
    private String punishreasontwo;
    
    public String getPunishreasonone() {
		return punishreasonone;
	}
	public void setPunishreasonone(String punishreasonone) {
		this.punishreasonone = punishreasonone;
	}
	public String getPunishreasontwo() {
		return punishreasontwo;
	}
	public void setPunishreasontwo(String punishreasontwo) {
		this.punishreasontwo = punishrea
    
    /**
     * 设置原因
     * @param rewardName
     */
    public void setRewardName(String rewardName) {
    	if(StringUtil.isNotEmpty(rewardName) && rewardName.split(",").length == 1) {
    		punishreasonone = rewardName.split(",")[0];
    	}
    	if(StringUtil.isNotEmpty(rewardName) && rewardName.split(",").length == 2) {
    		punishreasonone = rewardName.split(",")[0];
    		punishreasontwo = rewardName.split(",")[1];
    	}
    	this.rewardName = rewardName;
    }


	public String getRewardNames() {
		rewardNames="";
		if(StringUtil.isEmpty(punishreasontwo)) {
			String dictName=DictContext.getInstance().getDict("punishreason", punishreasonone);
			if(!StringUtil.isEmpty(dictName)) {
				rewardNames=dictName;
			}
		}
		if(StringUtil.isNotEmpty(punishreasontwo)) {
			String dictName=DictContext.getInstance().getDict(punishreasonone, punishreasontwo);
			if(!StringUtil.isEmpty(dictName)) {
				rewardNames=dictName;
			}
		}
		return rewardNames;
	}