[英]Adding form elements dynamically in spring mvc
我无法以ajax方式加载表单元素。
ResourcePipeline.jsp:
<head>
$(document).ready(function() {
var resourcePosition = 0;
$('#addResourceButton').click(function() {
resourcePosition++;
alert(resourcePosition);
$.get("appendResourceView.page", { fieldId: resourcePosition},
function(data){
$('#submitRow').before(data);
alert(resourcePosition+ "after sending the url");
});
});
});
</head>
<body>
<input type="button" id="addResourceButton" value="+" />
</body>
我的控制器:
@RequestMapping(method = RequestMethod.GET, value="/appendResourceView.page")
protected String appendResourceField(@RequestParam Integer fieldId, ModelMap model )
{
List<Resource> resources = new ArrayList<Resource>();
Resource resource = new Resource();
resources.add(resource);
Demand demand = new Demand();
demand.setResources(resources);
Map map = new HashMap();
map.put("demand", demand);
model.addAttribute("resourceNumber", fieldId);
model.addAttribute("map", map);
return "resourceInsert.view";
}
jsp是通过AJAX调用
resourceInsert.jsp:
<c:set var="resourceForDemand" value="${map.demand}"></c:set>
<form:input type="text" class="dater" path="resourceForDemand.resources[${resourceNumber}].need_From_Date" required="true" />
当我尝试触发AJAX部分时,我收到“ BeanResult'resourceForDemand'的BindingResult或普通目标对象都不能用作请求属性”作为错误。 需要帮忙。 提前致谢。
Spring正在寻找一个名为resourceForDemand
的模型对象,但找不到。 您是否有任何理由在ModelMap
使用嵌套地图? 最好对控制器方法进行较小的重构,然后直接在模型中公开Demand
对象:
@RequestMapping(method = RequestMethod.GET, value="/appendResourceView.page")
protected String appendResourceField(@RequestParam Integer fieldId, ModelMap model )
{
List<Resource> resources = new ArrayList<Resource>();
Resource resource = new Resource();
resources.add(resource);
Demand demand = new Demand();
demand.setResources(resources);
model.addAttribute("resourceNumber", fieldId);
model.addAttribute("resourceForDemand", demand);
return "resourceInsert.view";
}
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