structs2注解+jsp+ajax实现post异步加载select
流程:
1.点击加载btn发起异步请求post
2.后台处理请求返回数据
3.前端获取数据成功,对数据进行处理
前端:
html:首先要导入jq包,不然怎么用ajax呢。
<script type="text/javascript" src="js/jquery.js"></script>
<select name="warId" id="warId" style="height:100%;width:107px"> <option value="">所有仓库 </option> </select>
<script type="text/javascript"> $(document).ready(function(){ //这里实现的是: 点击class为add的按钮时加载仓库列表 $(".add").click(function(){ $.post("xxxx.do",function(data){ //要异步加载的action,和成功后的回调 var objs = data.warehouses; //对应action里的属性 var selObj = $("#wareId"); selObj.empty(); for (var i in objs) { var obj = objs[i]; addOption(selObj,obj.id,obj.warehouseName); //为Select追加一个Option(下拉项) } },"json"); //返回类型 }); }); function addOption(selObj,value,text){ var optionstring = "<option value=\"" + value + "\" >"+ text + "</option>"; selObj.append(optionstring); //为Select追加一个Option(下拉项) } </script>
后台structs:
使用注解实现,
要注意的是声明类的时候要加注解:@ParentPackage("json-default")
方法声明注解: @Action(value = "xxxx", results = @Result(name = "success", type="json"))
需要跳转页面就把type = "json" 换成 location = "/mobile/auction_detailed.jsp" 要跳转的页面
@ParentPackage("json-default") public class WarHouseAction extends ActionSupport { @Autowired private WarehouseService warehouseService; private List<Warehouse> warehouses; /** * 后台ajax * @return * 需要跳转页面就把type = "json" 换成 location = "/mobile/auction_detailed.jsp" 要跳转的页面 */ @Action(value = "addGood_before", results = @Result(name = "success", type="json")) public String addGoodBefore(){ warehouses = warehouseService.findAllEnableWarehouses(); //这个是返回到页面的 return "success"; } public WarehouseService getWarehouseService() { return warehouseService; } public void setWarehouseService(WarehouseService warehouseService) { this.warehouseService = warehouseService; } public List<Warehouse> getWarehouses() { return warehouses; } public void setWarehouses(List<Warehouse> warehouses) { this.warehouses = warehouses; } }
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