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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&lt;Warehouse&gt; warehouses;

/**
 * 后台ajax
 * @return
 * 需要跳转页面就把type = &quot;json&quot; 换成  location = &quot;/mobile/auction_detailed.jsp&quot; 要跳转的页面
 */
@Action(value = &quot;addGood_before&quot;, results = @Result(name = &quot;success&quot;, type=&quot;json&quot;))  
public String addGoodBefore(){
    warehouses = warehouseService.findAllEnableWarehouses();   //这个是返回到页面的
    return &quot;success&quot;;
}

public WarehouseService getWarehouseService() {
    return warehouseService;
}

public void setWarehouseService(WarehouseService warehouseService) {
    this.warehouseService = warehouseService;
}

public List&lt;Warehouse&gt; getWarehouses() {
    return warehouses;
}

public void setWarehouses(List&lt;Warehouse&gt; warehouses) {
    this.warehouses = warehouses;
}

}

提示一下用的是jquery.js   v1.4.1的  ,用min的貌似是返回json的不是返回obj

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