我有一个JSP页面。我从弹簧控制器传递了2个模型对象。
- 资产(获取资产(。
- 资产(获取所有资产(
我想设置选项,如果条件匹配。
我的代码
<table>
<tr>
<td>Asset Id :</td>
<td>
<form id="getAssetForm" method="get">
<select id="assetid" name="assetid" onchange="submitForm(this);">
<c:if test="${not empty assets}">
<c:forEach items="${assets}" var="assetsproperties">
<c:choose>
<c:when test="${not empty asset}">
<c:forEach items="${asset}" var="assetobj">
<c:choose>
<c:when test="${assetobj.id} == ${assetsproperties.id}">
<option value="${assetobj.id}" selected>${assetobj.name}</option>
</c:when>
<c:otherwise>
<option value="${assetsproperties.id}">${assetsproperties.name}</option>
</c:otherwise>
</c:choose>
</c:forEach>
</c:when>
<c:otherwise>
<option value="${assetsproperties.id}">${assetsproperties.name}</option>
</c:otherwise>
</c:choose>
</c:forEach>
</c:if>
</select>
</form>
</td>
</tr>
<tr>
<td>Name :</td>
<td><input type="text" name="assetname" value="<c:if test="${not empty asset}"><c:forEach items="${asset}" var="assetobj">${assetobj.name}</c:forEach></c:if>"></td>
</tr>
<tr>
<td>Model Number :</td>
<td><input type="text" name="assetmodelnumber" value="<c:if test="${not empty asset}"><c:forEach items="${asset}" var="assetobj">${assetobj.modelNumber}</c:forEach></c:if>"></td>
</tr>
<tr>
<td>Rating (1 to 5 ):</td>
<td><input type="text" name="assetrating" value="<c:if test="${not empty asset}"><c:forEach items="${asset}" var="assetobj">${assetobj.rating}</c:forEach></c:if>"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" name="Save" value="Update">
</tr>
</table>
<script type="text/javascript">
function submitForm(a){
var e = document.getElementById("assetid");
var assetid = e.options[e.selectedIndex].value;
var assetnametxt = e.options[e.selectedIndex].text;
var assetnameElement = document.createElement("input");
assetnameElement.type = "hidden";
assetnameElement.name = "assetname";
assetnameElement.value = assetnametxt;
var form = document.getElementById('getAssetForm');
form.appendChild(assetnameElement);
form.setAttribute('action', "get-asset");
form.submit();
}
</script>
这是我的控制器代码:
@RequestMapping(value="/get-asset", method = RequestMethod.GET)
public String showGetAssetPage(ModelMap model,
@RequestParam("assetid") int assetid,
@RequestParam("assetname") String assetname){
System.out.println("inside showGetAssetPage() ");
List<Asset> asset = service.getAsset(assetid, assetname);
model.addAttribute("asset", asset);
List<Asset> assets = service.getAssets();
model.addAttribute("assets", assets);
return "update-asset";
}
我想在页面加载中显示选定的资产。如何使用JSTL匹配条件?
您的资产模型中应该有一个布尔字段isSelected
。在您的控制器中,在所有资产对象中设置isSelected
属性。仅使用此资产和检查isSelected
属性,您可以设置为选择。