db.html
<div th:each="pr, stat: *{mergeMap}">
<tr>
<td><input type="text" name="key" th:value="${pr.key}" /></td>
<td><input type="text" name="value" th:value="${pr.value}" /></td>
</tr>
</div>
在提交此输入时,我总是让SpringMap在Spring Controller中为空。应该怎么做才能获得mergeMap的值?
Controller.java
@RequestMapping(value = "/shot")
public String saveMergeProducts(@ModelAttribute(value="prod") MergedProductInfoDTO prod, BindingResult bindingResult,
Model model, HttpServletRequest request) {
System.out.println(prod.toString());
return "forward:/backoffice/db";
}
HTML
<form action="#" th:action="@{shot}" method="POST" th:object="${prod}">
<tr>
<td><span th:text="${index.index}"></span></td>
<td><input type="text" name="id" th:value="*{id}" th:readonly="readonly" /></td>
<td><input type="text" name="categoryName" th:value="*{categoryName}" th:readonly="readonly" /></td>
<td><input type="text" name="subCategoryName" th:value="*{subCategoryName}" th:readonly="readonly" /></td>
<td><input type="text" name="productBrand" th:value="*{productBrand}" /></td>
<td><input type="text" name="productSubBrand" th:value="*{productSubBrand}" /></td>
<td><input type="text" name="series" th:value="*{series}" /></td>
<td><input type="text" name="model" th:value="*{model}" /></td>
</tr>
<tr>
<td colspan="7">
<tr>
<th>KEY</th>
<th>VALUE</th>
</tr>
<div th:each="pr, stat: *{mergeMap}">
<tr>
<td><input type="text" name="mergeMapKey" th:value="${pr.key}" /></td>
<td><input type="text" name="mergeMapValue" th:value="${pr.value}" /></td>
</tr>
</div>
</table>
</td>
<td><input type="text" name="tags" th:value="*{tags}" /></td>
<td><input type="submit" value="Submit" /></td>
</tr>
答案 0 :(得分:7)
要访问表单支持bean的Map
属性,请使用__${...}__
预处理器
<div th:each="pr, stat: *{mergeMap}">
<tr>
<td><input type="text" name="value" th:value="${pr.key}" readonly="true"/></td>
<td><input type="text" name="value" th:field="*{mergeMap[__${pr.key}__]}"/></td>
</tr>
</div>
它的作用是在评估整个表达式之前首先评估内部表达式。请注意,在这种情况下,不应修改${pr.key}
,以便更新将反映到绑定到表单的bean的map属性。
参考:http://www.thymeleaf.org/doc/tutorials/2.1/thymeleafspring.html#dynamic-fields